From 35ac6f081f26e1b6b3482b9c8dfccebe7817c691 Mon Sep 17 00:00:00 2001 From: Jacob Pan Date: Tue, 9 Nov 2010 13:57:29 +0000 Subject: mmc: sdhci: Fix crash on boot with C0 stepping Moorestown platforms SDHC2 is newly added in C0 stepping of Langwell. Without the Moorestown specific quirk, the default pci_probe will be called and crash the kernel. This patch unblocks the crash problem on C0 by using the same probing function as HC1, which limits the number of slots to one. Signed-off-by: Jacob Pan Signed-off-by: Alan Cox Signed-off-by: Chris Ball --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index c6bcfe93b9ca..d369b533dc2a 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2441,6 +2441,7 @@ #define PCI_DEVICE_ID_INTEL_MFD_SDIO2 0x0822 #define PCI_DEVICE_ID_INTEL_MFD_EMMC0 0x0823 #define PCI_DEVICE_ID_INTEL_MFD_EMMC1 0x0824 +#define PCI_DEVICE_ID_INTEL_MRST_SD2 0x084F #define PCI_DEVICE_ID_INTEL_I960 0x0960 #define PCI_DEVICE_ID_INTEL_I960RM 0x0962 #define PCI_DEVICE_ID_INTEL_8257X_SOL 0x1062 -- cgit v1.2.3 From e98b6fed84d0f0155d7b398e0dfeac74c792f2d0 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 9 Nov 2010 12:24:53 -0800 Subject: ceph: fix comment, remove extraneous args The offset/length arguments aren't used. Signed-off-by: Sage Weil --- fs/ceph/file.c | 20 +++++++++----------- include/linux/ceph/libceph.h | 3 +-- net/ceph/pagevec.c | 3 +-- 3 files changed, 11 insertions(+), 15 deletions(-) (limited to 'include') diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 87ee944724f8..603fd00af0a6 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -376,21 +376,19 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data, dout("sync_read on file %p %llu~%u %s\n", file, off, len, (file->f_flags & O_DIRECT) ? "O_DIRECT" : ""); - if (file->f_flags & O_DIRECT) { - pages = ceph_get_direct_page_vector(data, num_pages, off, len); - - /* - * flush any page cache pages in this range. this - * will make concurrent normal and O_DIRECT io slow, - * but it will at least behave sensibly when they are - * in sequence. - */ - } else { + if (file->f_flags & O_DIRECT) + pages = ceph_get_direct_page_vector(data, num_pages); + else pages = ceph_alloc_page_vector(num_pages, GFP_NOFS); - } if (IS_ERR(pages)) return PTR_ERR(pages); + /* + * flush any page cache pages in this range. this + * will make concurrent normal and sync io slow, + * but it will at least behave sensibly when they are + * in sequence. + */ ret = filemap_write_and_wait(inode->i_mapping); if (ret < 0) goto done; diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index f22b2e941686..9e76d35670d2 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -227,8 +227,7 @@ extern int ceph_open_session(struct ceph_client *client); extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_get_direct_page_vector(const char __user *data, - int num_pages, - loff_t off, size_t len); + int num_pages); extern void ceph_put_page_vector(struct page **pages, int num_pages); extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c index 54caf0687155..ac34feeb2b3a 100644 --- a/net/ceph/pagevec.c +++ b/net/ceph/pagevec.c @@ -13,8 +13,7 @@ * build a vector of user pages */ struct page **ceph_get_direct_page_vector(const char __user *data, - int num_pages, - loff_t off, size_t len) + int num_pages) { struct page **pages; int rc; -- cgit v1.2.3 From b7495fc2ff941db6a118a93ab8d61149e3f4cef8 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 9 Nov 2010 12:43:12 -0800 Subject: ceph: make page alignment explicit in osd interface We used to infer alignment of IOs within a page based on the file offset, which assumed they matched. This broke with direct IO that was not aligned to pages (e.g., 512-byte aligned IO). We were also trusting the alignment specified in the OSD reply, which could have been adjusted by the server. Explicitly specify the page alignment when setting up OSD IO requests. Signed-off-by: Sage Weil --- fs/ceph/addr.c | 6 +++--- fs/ceph/file.c | 26 +++++++++++++++++++++----- fs/ceph/inode.c | 2 +- include/linux/ceph/osd_client.h | 7 +++++-- net/ceph/osd_client.c | 22 ++++++++++++++-------- 5 files changed, 44 insertions(+), 19 deletions(-) (limited to 'include') diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 51bcc5ce3230..4aa857763037 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -204,7 +204,7 @@ static int readpage_nounlock(struct file *filp, struct page *page) err = ceph_osdc_readpages(osdc, ceph_vino(inode), &ci->i_layout, page->index << PAGE_CACHE_SHIFT, &len, ci->i_truncate_seq, ci->i_truncate_size, - &page, 1); + &page, 1, 0); if (err == -ENOENT) err = 0; if (err < 0) { @@ -287,7 +287,7 @@ static int ceph_readpages(struct file *file, struct address_space *mapping, rc = ceph_osdc_readpages(osdc, ceph_vino(inode), &ci->i_layout, offset, &len, ci->i_truncate_seq, ci->i_truncate_size, - pages, nr_pages); + pages, nr_pages, 0); if (rc == -ENOENT) rc = 0; if (rc < 0) @@ -782,7 +782,7 @@ get_more_pages: snapc, do_sync, ci->i_truncate_seq, ci->i_truncate_size, - &inode->i_mtime, true, 1); + &inode->i_mtime, true, 1, 0); max_pages = req->r_num_pages; alloc_page_vec(fsc, req); diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 603fd00af0a6..8d79b8912e31 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -282,11 +282,12 @@ int ceph_release(struct inode *inode, struct file *file) static int striped_read(struct inode *inode, u64 off, u64 len, struct page **pages, int num_pages, - int *checkeof) + int *checkeof, bool align_to_pages) { struct ceph_fs_client *fsc = ceph_inode_to_client(inode); struct ceph_inode_info *ci = ceph_inode(inode); u64 pos, this_len; + int io_align, page_align; int page_off = off & ~PAGE_CACHE_MASK; /* first byte's offset in page */ int left, pages_left; int read; @@ -302,14 +303,19 @@ static int striped_read(struct inode *inode, page_pos = pages; pages_left = num_pages; read = 0; + io_align = off & ~PAGE_MASK; more: + if (align_to_pages) + page_align = (pos - io_align) & ~PAGE_MASK; + else + page_align = pos & ~PAGE_MASK; this_len = left; ret = ceph_osdc_readpages(&fsc->client->osdc, ceph_vino(inode), &ci->i_layout, pos, &this_len, ci->i_truncate_seq, ci->i_truncate_size, - page_pos, pages_left); + page_pos, pages_left, page_align); hit_stripe = this_len < left; was_short = ret >= 0 && ret < this_len; if (ret == -ENOENT) @@ -393,7 +399,8 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data, if (ret < 0) goto done; - ret = striped_read(inode, off, len, pages, num_pages, checkeof); + ret = striped_read(inode, off, len, pages, num_pages, checkeof, + file->f_flags & O_DIRECT); if (ret >= 0 && (file->f_flags & O_DIRECT) == 0) ret = ceph_copy_page_vector_to_user(pages, data, off, ret); @@ -448,6 +455,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, int flags; int do_sync = 0; int check_caps = 0; + int page_align, io_align; int ret; struct timespec mtime = CURRENT_TIME; @@ -462,6 +470,8 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, else pos = *offset; + io_align = pos & ~PAGE_MASK; + ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + left); if (ret < 0) return ret; @@ -486,20 +496,26 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, */ more: len = left; + if (file->f_flags & O_DIRECT) + /* write from beginning of first page, regardless of + io alignment */ + page_align = (pos - io_align) & ~PAGE_MASK; + else + page_align = pos & ~PAGE_MASK; req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, ceph_vino(inode), pos, &len, CEPH_OSD_OP_WRITE, flags, ci->i_snap_realm->cached_context, do_sync, ci->i_truncate_seq, ci->i_truncate_size, - &mtime, false, 2); + &mtime, false, 2, page_align); if (!req) return -ENOMEM; num_pages = calc_pages_for(pos, len); if (file->f_flags & O_DIRECT) { - pages = ceph_get_direct_page_vector(data, num_pages, pos, len); + pages = ceph_get_direct_page_vector(data, num_pages); if (IS_ERR(pages)) { ret = PTR_ERR(pages); goto out; diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 7bc0fbd26af2..8153ee5a8d74 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -1752,7 +1752,7 @@ int ceph_do_getattr(struct inode *inode, int mask) return 0; } - dout("do_getattr inode %p mask %s\n", inode, ceph_cap_string(mask)); + dout("do_getattr inode %p mask %s mode 0%o\n", inode, ceph_cap_string(mask), inode->i_mode); if (ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) return 0; diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 6c91fb032c39..a1af29648fb5 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -79,6 +79,7 @@ struct ceph_osd_request { struct ceph_file_layout r_file_layout; struct ceph_snap_context *r_snapc; /* snap context for writes */ unsigned r_num_pages; /* size of page array (follows) */ + unsigned r_page_alignment; /* io offset in first page */ struct page **r_pages; /* pages for data payload */ int r_pages_from_pool; int r_own_pages; /* if true, i own page list */ @@ -194,7 +195,8 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, int do_sync, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, - bool use_mempool, int num_reply); + bool use_mempool, int num_reply, + int page_align); static inline void ceph_osdc_get_request(struct ceph_osd_request *req) { @@ -218,7 +220,8 @@ extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, struct ceph_file_layout *layout, u64 off, u64 *plen, u32 truncate_seq, u64 truncate_size, - struct page **pages, int nr_pages); + struct page **pages, int nr_pages, + int page_align); extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 79391994b3ed..6c096239660c 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -71,6 +71,7 @@ void ceph_calc_raw_layout(struct ceph_osd_client *osdc, op->extent.length = objlen; } req->r_num_pages = calc_pages_for(off, *plen); + req->r_page_alignment = off & ~PAGE_MASK; if (op->op == CEPH_OSD_OP_WRITE) op->payload_len = *plen; @@ -419,7 +420,8 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, - bool use_mempool, int num_reply) + bool use_mempool, int num_reply, + int page_align) { struct ceph_osd_req_op ops[3]; struct ceph_osd_request *req; @@ -447,6 +449,10 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, calc_layout(osdc, vino, layout, off, plen, req, ops); req->r_file_layout = *layout; /* keep a copy */ + /* in case it differs from natural alignment that calc_layout + filled in for us */ + req->r_page_alignment = page_align; + ceph_osdc_build_request(req, off, plen, ops, snapc, mtime, @@ -1489,7 +1495,7 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc, struct ceph_vino vino, struct ceph_file_layout *layout, u64 off, u64 *plen, u32 truncate_seq, u64 truncate_size, - struct page **pages, int num_pages) + struct page **pages, int num_pages, int page_align) { struct ceph_osd_request *req; int rc = 0; @@ -1499,15 +1505,15 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc, req = ceph_osdc_new_request(osdc, layout, vino, off, plen, CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, NULL, 0, truncate_seq, truncate_size, NULL, - false, 1); + false, 1, page_align); if (!req) return -ENOMEM; /* it may be a short read due to an object boundary */ req->r_pages = pages; - dout("readpages final extent is %llu~%llu (%d pages)\n", - off, *plen, req->r_num_pages); + dout("readpages final extent is %llu~%llu (%d pages align %d)\n", + off, *plen, req->r_num_pages, page_align); rc = ceph_osdc_start_request(osdc, req, false); if (!rc) @@ -1533,6 +1539,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, { struct ceph_osd_request *req; int rc = 0; + int page_align = off & ~PAGE_MASK; BUG_ON(vino.snap != CEPH_NOSNAP); req = ceph_osdc_new_request(osdc, layout, vino, off, &len, @@ -1541,7 +1548,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, CEPH_OSD_FLAG_WRITE, snapc, do_sync, truncate_seq, truncate_size, mtime, - nofail, 1); + nofail, 1, page_align); if (!req) return -ENOMEM; @@ -1638,8 +1645,7 @@ static struct ceph_msg *get_reply(struct ceph_connection *con, m = ceph_msg_get(req->r_reply); if (data_len > 0) { - unsigned data_off = le16_to_cpu(hdr->data_off); - int want = calc_pages_for(data_off & ~PAGE_MASK, data_len); + int want = calc_pages_for(req->r_page_alignment, data_len); if (unlikely(req->r_num_pages < want)) { pr_warning("tid %lld reply %d > expected %d pages\n", -- cgit v1.2.3 From c5c6b19d4b8f5431fca05f28ae9e141045022149 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 9 Nov 2010 12:40:00 -0800 Subject: ceph: explicitly specify page alignment in network messages The alignment used for reading data into or out of pages used to be taken from the data_off field in the message header. This only worked as long as the page alignment matched the object offset, breaking direct io to non-page aligned offsets. Instead, explicitly specify the page alignment next to the page vector in the ceph_msg struct, and use that instead of the message header (which probably shouldn't be trusted). The alloc_msg callback is responsible for filling in this field properly when it sets up the page vector. Signed-off-by: Sage Weil --- include/linux/ceph/messenger.h | 1 + net/ceph/messenger.c | 10 +++++----- net/ceph/osd_client.c | 3 +++ 3 files changed, 9 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 5956d62c3057..a108b425fee2 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -82,6 +82,7 @@ struct ceph_msg { struct ceph_buffer *middle; struct page **pages; /* data payload. NOT OWNER. */ unsigned nr_pages; /* size of page array */ + unsigned page_alignment; /* io offset in first page */ struct ceph_pagelist *pagelist; /* instead of pages */ struct list_head list_head; struct kref kref; diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index d379abf873bc..1c7a2ec4f3cc 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -540,8 +540,7 @@ static void prepare_write_message(struct ceph_connection *con) /* initialize page iterator */ con->out_msg_pos.page = 0; if (m->pages) - con->out_msg_pos.page_pos = - le16_to_cpu(m->hdr.data_off) & ~PAGE_MASK; + con->out_msg_pos.page_pos = m->page_alignment; else con->out_msg_pos.page_pos = 0; con->out_msg_pos.data_pos = 0; @@ -1491,7 +1490,7 @@ static int read_partial_message(struct ceph_connection *con) struct ceph_msg *m = con->in_msg; int ret; int to, left; - unsigned front_len, middle_len, data_len, data_off; + unsigned front_len, middle_len, data_len; int datacrc = con->msgr->nocrc; int skip; u64 seq; @@ -1527,7 +1526,6 @@ static int read_partial_message(struct ceph_connection *con) data_len = le32_to_cpu(con->in_hdr.data_len); if (data_len > CEPH_MSG_MAX_DATA_LEN) return -EIO; - data_off = le16_to_cpu(con->in_hdr.data_off); /* verify seq# */ seq = le64_to_cpu(con->in_hdr.seq); @@ -1575,7 +1573,7 @@ static int read_partial_message(struct ceph_connection *con) con->in_msg_pos.page = 0; if (m->pages) - con->in_msg_pos.page_pos = data_off & ~PAGE_MASK; + con->in_msg_pos.page_pos = m->page_alignment; else con->in_msg_pos.page_pos = 0; con->in_msg_pos.data_pos = 0; @@ -2300,6 +2298,7 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags) /* data */ m->nr_pages = 0; + m->page_alignment = 0; m->pages = NULL; m->pagelist = NULL; m->bio = NULL; @@ -2369,6 +2368,7 @@ static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con, type, front_len); return NULL; } + msg->page_alignment = le16_to_cpu(hdr->data_off); } memcpy(&msg->hdr, &con->in_hdr, sizeof(con->in_hdr)); diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 6c096239660c..3e20a122ffa2 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -391,6 +391,8 @@ void ceph_osdc_build_request(struct ceph_osd_request *req, req->r_request->hdr.data_len = cpu_to_le32(data_len); } + req->r_request->page_alignment = req->r_page_alignment; + BUG_ON(p > msg->front.iov_base + msg->front.iov_len); msg_size = p - msg->front.iov_base; msg->front.iov_len = msg_size; @@ -1657,6 +1659,7 @@ static struct ceph_msg *get_reply(struct ceph_connection *con, } m->pages = req->r_pages; m->nr_pages = req->r_num_pages; + m->page_alignment = req->r_page_alignment; #ifdef CONFIG_BLOCK m->bio = req->r_bio; #endif -- cgit v1.2.3 From c28a9926f28e8c7c52603db58754a78008768ca1 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 9 Nov 2010 12:00:11 +0000 Subject: ASoC: Remove broken WM8350 direction constants The WM8350 driver was using some custom constants to interpret the direction of the MCLK signal which had the opposite values to those used as standard by the ASoC core, causing confusion in machine drivers such as the 1133-EV1 board. Reported-by: Tommy Zhu Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8350/audio.h | 3 --- sound/soc/codecs/wm8350.c | 2 +- 2 files changed, 1 insertion(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/mfd/wm8350/audio.h b/include/linux/mfd/wm8350/audio.h index a95141eafce3..bd581c6fa085 100644 --- a/include/linux/mfd/wm8350/audio.h +++ b/include/linux/mfd/wm8350/audio.h @@ -522,9 +522,6 @@ #define WM8350_MCLK_SEL_PLL_32K 3 #define WM8350_MCLK_SEL_MCLK 5 -#define WM8350_MCLK_DIR_OUT 0 -#define WM8350_MCLK_DIR_IN 1 - /* clock divider id's */ #define WM8350_ADC_CLKDIV 0 #define WM8350_DAC_CLKDIV 1 diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c index f4f1fba38eb9..4f3e919a0755 100644 --- a/sound/soc/codecs/wm8350.c +++ b/sound/soc/codecs/wm8350.c @@ -831,7 +831,7 @@ static int wm8350_set_dai_sysclk(struct snd_soc_dai *codec_dai, } /* MCLK direction */ - if (dir == WM8350_MCLK_DIR_OUT) + if (dir == SND_SOC_CLOCK_OUT) wm8350_set_bits(wm8350, WM8350_CLOCK_CONTROL_2, WM8350_MCLK_DIR); else -- cgit v1.2.3 From b17cd8d69a75f921d9d444cc3ac9b5b1d0b66ca0 Mon Sep 17 00:00:00 2001 From: Brandon Philips Date: Sun, 7 Nov 2010 01:28:24 -0500 Subject: driver core: prune docs about device_interface drivers/base/intf.c was removed before the beginning of (git) time but its Documentation stuck around. Remove it. Signed-off-by: Brandon Philips Signed-off-by: Greg Kroah-Hartman --- Documentation/driver-model/interface.txt | 129 ------------------------------- include/linux/cpu.h | 5 -- include/linux/node.h | 5 -- 3 files changed, 139 deletions(-) delete mode 100644 Documentation/driver-model/interface.txt (limited to 'include') diff --git a/Documentation/driver-model/interface.txt b/Documentation/driver-model/interface.txt deleted file mode 100644 index c66912bfe866..000000000000 --- a/Documentation/driver-model/interface.txt +++ /dev/null @@ -1,129 +0,0 @@ - -Device Interfaces - -Introduction -~~~~~~~~~~~~ - -Device interfaces are the logical interfaces of device classes that correlate -directly to userspace interfaces, like device nodes. - -Each device class may have multiple interfaces through which you can -access the same device. An input device may support the mouse interface, -the 'evdev' interface, and the touchscreen interface. A SCSI disk would -support the disk interface, the SCSI generic interface, and possibly a raw -device interface. - -Device interfaces are registered with the class they belong to. As devices -are added to the class, they are added to each interface registered with -the class. The interface is responsible for determining whether the device -supports the interface or not. - - -Programming Interface -~~~~~~~~~~~~~~~~~~~~~ - -struct device_interface { - char * name; - rwlock_t lock; - u32 devnum; - struct device_class * devclass; - - struct list_head node; - struct driver_dir_entry dir; - - int (*add_device)(struct device *); - int (*add_device)(struct intf_data *); -}; - -int interface_register(struct device_interface *); -void interface_unregister(struct device_interface *); - - -An interface must specify the device class it belongs to. It is added -to that class's list of interfaces on registration. - - -Interfaces can be added to a device class at any time. Whenever it is -added, each device in the class is passed to the interface's -add_device callback. When an interface is removed, each device is -removed from the interface. - - -Devices -~~~~~~~ -Once a device is added to a device class, it is added to each -interface that is registered with the device class. The class -is expected to place a class-specific data structure in -struct device::class_data. The interface can use that (along with -other fields of struct device) to determine whether or not the driver -and/or device support that particular interface. - - -Data -~~~~ - -struct intf_data { - struct list_head node; - struct device_interface * intf; - struct device * dev; - u32 intf_num; -}; - -int interface_add_data(struct interface_data *); - -The interface is responsible for allocating and initializing a struct -intf_data and calling interface_add_data() to add it to the device's list -of interfaces it belongs to. This list will be iterated over when the device -is removed from the class (instead of all possible interfaces for a class). -This structure should probably be embedded in whatever per-device data -structure the interface is allocating anyway. - -Devices are enumerated within the interface. This happens in interface_add_data() -and the enumerated value is stored in the struct intf_data for that device. - -sysfs -~~~~~ -Each interface is given a directory in the directory of the device -class it belongs to: - -Interfaces get a directory in the class's directory as well: - - class/ - `-- input - |-- devices - |-- drivers - |-- mouse - `-- evdev - -When a device is added to the interface, a symlink is created that points -to the device's directory in the physical hierarchy: - - class/ - `-- input - |-- devices - | `-- 1 -> ../../../root/pci0/00:1f.0/usb_bus/00:1f.2-1:0/ - |-- drivers - | `-- usb:usb_mouse -> ../../../bus/drivers/usb_mouse/ - |-- mouse - | `-- 1 -> ../../../root/pci0/00:1f.0/usb_bus/00:1f.2-1:0/ - `-- evdev - `-- 1 -> ../../../root/pci0/00:1f.0/usb_bus/00:1f.2-1:0/ - - -Future Plans -~~~~~~~~~~~~ -A device interface is correlated directly with a userspace interface -for a device, specifically a device node. For instance, a SCSI disk -exposes at least two interfaces to userspace: the standard SCSI disk -interface and the SCSI generic interface. It might also export a raw -device interface. - -Many interfaces have a major number associated with them and each -device gets a minor number. Or, multiple interfaces might share one -major number, and each will receive a range of minor numbers (like in -the case of input devices). - -These major and minor numbers could be stored in the interface -structure. Major and minor allocations could happen when the interface -is registered with the class, or via a helper function. - diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 4823af64e9db..5f09323ee880 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -10,11 +10,6 @@ * * CPUs are exported via sysfs in the class/cpu/devices/ * directory. - * - * Per-cpu interfaces can be implemented using a struct device_interface. - * See the following for how to do this: - * - drivers/base/intf.c - * - Documentation/driver-model/interface.txt */ #ifndef _LINUX_CPU_H_ #define _LINUX_CPU_H_ diff --git a/include/linux/node.h b/include/linux/node.h index 06292dac3eab..1466945cc9ef 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -10,11 +10,6 @@ * * Nodes are exported via driverfs in the class/node/devices/ * directory. - * - * Per-node interfaces can be implemented using a struct device_interface. - * See the following for how to do this: - * - drivers/base/intf.c - * - Documentation/driver-model/interface.txt */ #ifndef _LINUX_NODE_H_ #define _LINUX_NODE_H_ -- cgit v1.2.3 From 318af55ddd38bdaaa2b57f5c3bd394f3ce3a2610 Mon Sep 17 00:00:00 2001 From: "Hans J. Koch" Date: Sat, 30 Oct 2010 00:36:47 +0200 Subject: uio: Change mail address of Hans J. Koch My old mail address doesn't exist anymore. This changes all occurrences to my new address. Signed-off-by: Hans J. Koch Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio.c | 2 +- drivers/uio/uio_cif.c | 2 +- drivers/uio/uio_netx.c | 2 +- include/linux/uio_driver.h | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index a858d2b87b94..51fe1795d5a8 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -3,7 +3,7 @@ * * Copyright(C) 2005, Benedikt Spranger * Copyright(C) 2005, Thomas Gleixner - * Copyright(C) 2006, Hans J. Koch + * Copyright(C) 2006, Hans J. Koch * Copyright(C) 2006, Greg Kroah-Hartman * * Userspace IO diff --git a/drivers/uio/uio_cif.c b/drivers/uio/uio_cif.c index a8ea2f19a0cc..a84a451159ed 100644 --- a/drivers/uio/uio_cif.c +++ b/drivers/uio/uio_cif.c @@ -1,7 +1,7 @@ /* * UIO Hilscher CIF card driver * - * (C) 2007 Hans J. Koch + * (C) 2007 Hans J. Koch * Original code (C) 2005 Benedikt Spranger * * Licensed under GPL version 2 only. diff --git a/drivers/uio/uio_netx.c b/drivers/uio/uio_netx.c index 5a18e9f7b836..5ffdb483b015 100644 --- a/drivers/uio/uio_netx.c +++ b/drivers/uio/uio_netx.c @@ -2,7 +2,7 @@ * UIO driver for Hilscher NetX based fieldbus cards (cifX, comX). * See http://www.hilscher.com for details. * - * (C) 2007 Hans J. Koch + * (C) 2007 Hans J. Koch * (C) 2008 Manuel Traut * * Licensed under GPL version 2 only. diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index d6188e5a52df..665517c05eaf 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -3,7 +3,7 @@ * * Copyright(C) 2005, Benedikt Spranger * Copyright(C) 2005, Thomas Gleixner - * Copyright(C) 2006, Hans J. Koch + * Copyright(C) 2006, Hans J. Koch * Copyright(C) 2006, Greg Kroah-Hartman * * Userspace IO driver. -- cgit v1.2.3 From 3c502e7a0255d82621ff25d60cc816624830497e Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Thu, 4 Nov 2010 17:33:01 -0500 Subject: perf,hw_breakpoint: Initialize hardware api earlier When using early debugging, the kernel does not initialize the hw_breakpoint API early enough and causes the late initialization of the kernel debugger to fail. The boot arguments are: earlyprintk=vga ekgdboc=kbd kgdbwait Then simply type "go" at the kdb prompt and boot. The kernel will later emit the message: kgdb: Could not allocate hwbreakpoints And at that point the kernel debugger will cease to work correctly. The solution is to initialize the hw_breakpoint at the same time that all the other perf call backs are initialized instead of using a core_initcall() initialization which happens well after the kernel debugger can make use of hardware breakpoints. Signed-off-by: Jason Wessel CC: Frederic Weisbecker CC: Ingo Molnar CC: Peter Zijlstra LKML-Reference: <4CD3396D.1090308@windriver.com> Signed-off-by: Frederic Weisbecker --- include/linux/hw_breakpoint.h | 4 ++++ kernel/hw_breakpoint.c | 3 +-- kernel/perf_event.c | 6 ++++++ 3 files changed, 11 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h index a2d6ea49ec56..d1e55fed2c7d 100644 --- a/include/linux/hw_breakpoint.h +++ b/include/linux/hw_breakpoint.h @@ -33,6 +33,8 @@ enum bp_type_idx { #ifdef CONFIG_HAVE_HW_BREAKPOINT +extern int __init init_hw_breakpoint(void); + static inline void hw_breakpoint_init(struct perf_event_attr *attr) { memset(attr, 0, sizeof(*attr)); @@ -108,6 +110,8 @@ static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp) #else /* !CONFIG_HAVE_HW_BREAKPOINT */ +static inline int __init init_hw_breakpoint(void) { return 0; } + static inline struct perf_event * register_user_hw_breakpoint(struct perf_event_attr *attr, perf_overflow_handler_t triggered, diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c index 2c9120f0afca..e5325825aeb6 100644 --- a/kernel/hw_breakpoint.c +++ b/kernel/hw_breakpoint.c @@ -620,7 +620,7 @@ static struct pmu perf_breakpoint = { .read = hw_breakpoint_pmu_read, }; -static int __init init_hw_breakpoint(void) +int __init init_hw_breakpoint(void) { unsigned int **task_bp_pinned; int cpu, err_cpu; @@ -655,6 +655,5 @@ static int __init init_hw_breakpoint(void) return -ENOMEM; } -core_initcall(init_hw_breakpoint); diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 517d827f4982..05b7d8c72c6c 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -31,6 +31,7 @@ #include #include #include +#include #include @@ -6295,6 +6296,8 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) void __init perf_event_init(void) { + int ret; + perf_event_init_all_cpus(); init_srcu_struct(&pmus_srcu); perf_pmu_register(&perf_swevent); @@ -6302,4 +6305,7 @@ void __init perf_event_init(void) perf_pmu_register(&perf_task_clock); perf_tp_register(); perf_cpu_notifier(perf_cpu_notify); + + ret = init_hw_breakpoint(); + WARN(ret, "hw_breakpoint initialization failed with: %d", ret); } -- cgit v1.2.3 From 7e77506a5918d82cafa2ffa783ab57c23f9e9817 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Thu, 30 Sep 2010 12:37:26 +0100 Subject: xen: implement XENMEM_machphys_mapping This hypercall allows Xen to specify a non-default location for the machine to physical mapping. This capability is used when running a 32 bit domain 0 on a 64 bit hypervisor to shrink the hypervisor hole to exactly the size required. [ Impact: add Xen hypercall definitions ] Signed-off-by: Ian Campbell Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Stefano Stabellini --- arch/x86/include/asm/xen/interface.h | 6 +++--- arch/x86/include/asm/xen/interface_32.h | 5 +++++ arch/x86/include/asm/xen/interface_64.h | 13 +------------ arch/x86/include/asm/xen/page.h | 7 ++++--- arch/x86/xen/enlighten.c | 7 +++++++ arch/x86/xen/mmu.c | 14 ++++++++++++++ include/xen/interface/memory.h | 13 +++++++++++++ 7 files changed, 47 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/arch/x86/include/asm/xen/interface.h b/arch/x86/include/asm/xen/interface.h index e8506c1f0c55..1c10c88ee4e1 100644 --- a/arch/x86/include/asm/xen/interface.h +++ b/arch/x86/include/asm/xen/interface.h @@ -61,9 +61,9 @@ DEFINE_GUEST_HANDLE(void); #define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START) #endif -#ifndef machine_to_phys_mapping -#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START) -#endif +#define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START) +#define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END) +#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>__MACH2PHYS_SHIFT) /* Maximum number of virtual CPUs in multi-processor guests. */ #define MAX_VIRT_CPUS 32 diff --git a/arch/x86/include/asm/xen/interface_32.h b/arch/x86/include/asm/xen/interface_32.h index 42a7e004ae5c..8413688b2571 100644 --- a/arch/x86/include/asm/xen/interface_32.h +++ b/arch/x86/include/asm/xen/interface_32.h @@ -32,6 +32,11 @@ /* And the trap vector is... */ #define TRAP_INSTR "int $0x82" +#define __MACH2PHYS_VIRT_START 0xF5800000 +#define __MACH2PHYS_VIRT_END 0xF6800000 + +#define __MACH2PHYS_SHIFT 2 + /* * Virtual addresses beyond this are not modifiable by guest OSes. The * machine->physical mapping table starts at this address, read-only. diff --git a/arch/x86/include/asm/xen/interface_64.h b/arch/x86/include/asm/xen/interface_64.h index 100d2662b97c..839a4811cf98 100644 --- a/arch/x86/include/asm/xen/interface_64.h +++ b/arch/x86/include/asm/xen/interface_64.h @@ -39,18 +39,7 @@ #define __HYPERVISOR_VIRT_END 0xFFFF880000000000 #define __MACH2PHYS_VIRT_START 0xFFFF800000000000 #define __MACH2PHYS_VIRT_END 0xFFFF804000000000 - -#ifndef HYPERVISOR_VIRT_START -#define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START) -#define HYPERVISOR_VIRT_END mk_unsigned_long(__HYPERVISOR_VIRT_END) -#endif - -#define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START) -#define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END) -#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>3) -#ifndef machine_to_phys_mapping -#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START) -#endif +#define __MACH2PHYS_SHIFT 3 /* * int HYPERVISOR_set_segment_base(unsigned int which, unsigned long base) diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h index dd8c1414b3d5..8760cc60a21c 100644 --- a/arch/x86/include/asm/xen/page.h +++ b/arch/x86/include/asm/xen/page.h @@ -5,6 +5,7 @@ #include #include #include +#include #include #include @@ -35,6 +36,8 @@ typedef struct xpaddr { #define MAX_DOMAIN_PAGES \ ((unsigned long)((u64)CONFIG_XEN_MAX_DOMAIN_MEMORY * 1024 * 1024 * 1024 / PAGE_SIZE)) +extern unsigned long *machine_to_phys_mapping; +extern unsigned int machine_to_phys_order; extern unsigned long get_phys_to_machine(unsigned long pfn); extern bool set_phys_to_machine(unsigned long pfn, unsigned long mfn); @@ -69,10 +72,8 @@ static inline unsigned long mfn_to_pfn(unsigned long mfn) if (xen_feature(XENFEAT_auto_translated_physmap)) return mfn; -#if 0 if (unlikely((mfn >> machine_to_phys_order) != 0)) - return max_mapnr; -#endif + return ~0; pfn = 0; /* diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 235c0f4d3861..bd3554934613 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -75,6 +75,11 @@ DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info); enum xen_domain_type xen_domain_type = XEN_NATIVE; EXPORT_SYMBOL_GPL(xen_domain_type); +unsigned long *machine_to_phys_mapping = (void *)MACH2PHYS_VIRT_START; +EXPORT_SYMBOL(machine_to_phys_mapping); +unsigned int machine_to_phys_order; +EXPORT_SYMBOL(machine_to_phys_order); + struct start_info *xen_start_info; EXPORT_SYMBOL_GPL(xen_start_info); @@ -1097,6 +1102,8 @@ asmlinkage void __init xen_start_kernel(void) xen_domain_type = XEN_PV_DOMAIN; + xen_setup_machphys_mapping(); + /* Install Xen paravirt ops */ pv_info = xen_info; pv_init_ops = xen_init_ops; diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 21ed8d7f75a5..bd2713a82571 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -2034,6 +2034,20 @@ static __init void xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn) set_page_prot(pmd, PAGE_KERNEL_RO); } +void __init xen_setup_machphys_mapping(void) +{ + struct xen_machphys_mapping mapping; + unsigned long machine_to_phys_nr_ents; + + if (HYPERVISOR_memory_op(XENMEM_machphys_mapping, &mapping) == 0) { + machine_to_phys_mapping = (unsigned long *)mapping.v_start; + machine_to_phys_nr_ents = mapping.max_mfn + 1; + } else { + machine_to_phys_nr_ents = MACH2PHYS_NR_ENTRIES; + } + machine_to_phys_order = fls(machine_to_phys_nr_ents - 1); +} + #ifdef CONFIG_X86_64 static void convert_pfn_mfn(void *v) { diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h index d7a6c13bde69..eac3ce153719 100644 --- a/include/xen/interface/memory.h +++ b/include/xen/interface/memory.h @@ -140,6 +140,19 @@ struct xen_machphys_mfn_list { }; DEFINE_GUEST_HANDLE_STRUCT(xen_machphys_mfn_list); +/* + * Returns the location in virtual address space of the machine_to_phys + * mapping table. Architectures which do not have a m2p table, or which do not + * map it by default into guest address space, do not implement this command. + * arg == addr of xen_machphys_mapping_t. + */ +#define XENMEM_machphys_mapping 12 +struct xen_machphys_mapping { + unsigned long v_start, v_end; /* Start and end virtual addresses. */ + unsigned long max_mfn; /* Maximum MFN that can be looked up. */ +}; +DEFINE_GUEST_HANDLE_STRUCT(xen_machphys_mapping_t); + /* * Sets the GPFN at which a particular page appears in the specified guest's * pseudophysical address space. -- cgit v1.2.3 From 9a1683d1dd14d6ed35d2884c6b79ff12fc6bef39 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Mon, 15 Nov 2010 18:14:43 +0900 Subject: sh: clkfwk: Kill off unused clk_set_rate_ex(). With the refactoring of the SH7722 clock framework some time ago this abstraction has become unecessary. Kill it off before anyone else gets the bright idea to start using it. Signed-off-by: Paul Mundt --- Documentation/DocBook/sh.tmpl | 4 ---- Documentation/sh/clk.txt | 32 -------------------------------- drivers/sh/clk/core.c | 12 +++--------- include/linux/sh_clk.h | 30 ------------------------------ 4 files changed, 3 insertions(+), 75 deletions(-) delete mode 100644 Documentation/sh/clk.txt (limited to 'include') diff --git a/Documentation/DocBook/sh.tmpl b/Documentation/DocBook/sh.tmpl index d858d92cf6d9..4a38f604fa66 100644 --- a/Documentation/DocBook/sh.tmpl +++ b/Documentation/DocBook/sh.tmpl @@ -79,10 +79,6 @@ - - Clock Framework Extensions -!Iinclude/linux/sh_clk.h - Machine Specific Interfaces diff --git a/Documentation/sh/clk.txt b/Documentation/sh/clk.txt deleted file mode 100644 index 114b595cfa97..000000000000 --- a/Documentation/sh/clk.txt +++ /dev/null @@ -1,32 +0,0 @@ -Clock framework on SuperH architecture - -The framework on SH extends existing API by the function clk_set_rate_ex, -which prototype is as follows: - - clk_set_rate_ex (struct clk *clk, unsigned long rate, int algo_id) - -The algo_id parameter is used to specify algorithm used to recalculate clocks, -adjanced to clock, specified as first argument. It is assumed that algo_id==0 -means no changes to adjanced clock - -Internally, the clk_set_rate_ex forwards request to clk->ops->set_rate method, -if it is present in ops structure. The method should set the clock rate and adjust -all needed clocks according to the passed algo_id. -Exact values for algo_id are machine-dependent. For the sh7722, the following -values are defined: - - NO_CHANGE = 0, - IUS_N1_N1, /* I:U = N:1, U:Sh = N:1 */ - IUS_322, /* I:U:Sh = 3:2:2 */ - IUS_522, /* I:U:Sh = 5:2:2 */ - IUS_N11, /* I:U:Sh = N:1:1 */ - SB_N1, /* Sh:B = N:1 */ - SB3_N1, /* Sh:B3 = N:1 */ - SB3_32, /* Sh:B3 = 3:2 */ - SB3_43, /* Sh:B3 = 4:3 */ - SB3_54, /* Sh:B3 = 5:4 */ - BP_N1, /* B:P = N:1 */ - IP_N1 /* I:P = N:1 */ - -Each of these constants means relation between clocks that can be set via the FRQCR -register diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index cb12a8e1466b..69be6bb92323 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -454,12 +454,6 @@ unsigned long clk_get_rate(struct clk *clk) EXPORT_SYMBOL_GPL(clk_get_rate); int clk_set_rate(struct clk *clk, unsigned long rate) -{ - return clk_set_rate_ex(clk, rate, 0); -} -EXPORT_SYMBOL_GPL(clk_set_rate); - -int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id) { int ret = -EOPNOTSUPP; unsigned long flags; @@ -467,7 +461,7 @@ int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id) spin_lock_irqsave(&clock_lock, flags); if (likely(clk->ops && clk->ops->set_rate)) { - ret = clk->ops->set_rate(clk, rate, algo_id); + ret = clk->ops->set_rate(clk, rate, 0); if (ret != 0) goto out_unlock; } else { @@ -485,7 +479,7 @@ out_unlock: return ret; } -EXPORT_SYMBOL_GPL(clk_set_rate_ex); +EXPORT_SYMBOL_GPL(clk_set_rate); int clk_set_parent(struct clk *clk, struct clk *parent) { @@ -654,7 +648,7 @@ static int clks_sysdev_suspend(struct sys_device *dev, pm_message_t state) clkp->parent); if (likely(clkp->ops->set_rate)) clkp->ops->set_rate(clkp, - rate, NO_CHANGE); + rate, 0); else if (likely(clkp->ops->recalc)) clkp->rate = clkp->ops->recalc(clkp); } diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index cea0c38e7a63..30885d928801 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -67,36 +67,6 @@ int clk_register(struct clk *); void clk_unregister(struct clk *); void clk_enable_init_clocks(void); -/** - * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter - * @clk: clock source - * @rate: desired clock rate in Hz - * @algo_id: algorithm id to be passed down to ops->set_rate - * - * Returns success (0) or negative errno. - */ -int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id); - -enum clk_sh_algo_id { - NO_CHANGE = 0, - - IUS_N1_N1, - IUS_322, - IUS_522, - IUS_N11, - - SB_N1, - - SB3_N1, - SB3_32, - SB3_43, - SB3_54, - - BP_N1, - - IP_N1, -}; - struct clk_div_mult_table { unsigned int *divisors; unsigned int nr_divisors; -- cgit v1.2.3 From 35a96c739fd7624b8edff990a74b86b5a85342da Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Mon, 15 Nov 2010 18:18:32 +0900 Subject: sh: clkfwk: Kill off now unused algo_id in set_rate op. Now that clk_set_rate_ex() is gone, there is also no way to get at rate setting algo id, which is now also completely unused. Kill it off before new clock ops start using it. Signed-off-by: Paul Mundt --- arch/arm/mach-shmobile/clock-sh7372.c | 6 ++---- arch/sh/kernel/cpu/sh4/clock-sh4-202.c | 2 +- drivers/sh/clk/core.c | 5 ++--- drivers/sh/clk/cpg.c | 5 ++--- include/linux/sh_clk.h | 2 +- 5 files changed, 8 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c index 7db31e6c6bf2..b25ce90a346e 100644 --- a/arch/arm/mach-shmobile/clock-sh7372.c +++ b/arch/arm/mach-shmobile/clock-sh7372.c @@ -220,8 +220,7 @@ static void pllc2_disable(struct clk *clk) __raw_writel(__raw_readl(PLLC2CR) & ~0x80000000, PLLC2CR); } -static int pllc2_set_rate(struct clk *clk, - unsigned long rate, int algo_id) +static int pllc2_set_rate(struct clk *clk, unsigned long rate) { unsigned long value; int idx; @@ -463,8 +462,7 @@ static int fsidiv_enable(struct clk *clk) return 0; } -static int fsidiv_set_rate(struct clk *clk, - unsigned long rate, int algo_id) +static int fsidiv_set_rate(struct clk *clk, unsigned long rate) { int idx; diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c index 4eabc68cd753..b601fa3978d1 100644 --- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c +++ b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c @@ -110,7 +110,7 @@ static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate) return 0; } -static int shoc_clk_set_rate(struct clk *clk, unsigned long rate, int algo_id) +static int shoc_clk_set_rate(struct clk *clk, unsigned long rate) { unsigned long frqcr3; unsigned int tmp; diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index 69be6bb92323..87743e7d4d42 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -461,7 +461,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate) spin_lock_irqsave(&clock_lock, flags); if (likely(clk->ops && clk->ops->set_rate)) { - ret = clk->ops->set_rate(clk, rate, 0); + ret = clk->ops->set_rate(clk, rate); if (ret != 0) goto out_unlock; } else { @@ -647,8 +647,7 @@ static int clks_sysdev_suspend(struct sys_device *dev, pm_message_t state) clkp->ops->set_parent(clkp, clkp->parent); if (likely(clkp->ops->set_rate)) - clkp->ops->set_rate(clkp, - rate, 0); + clkp->ops->set_rate(clkp, rate); else if (likely(clkp->ops->recalc)) clkp->rate = clkp->ops->recalc(clkp); } diff --git a/drivers/sh/clk/cpg.c b/drivers/sh/clk/cpg.c index 3aea5f0ceb09..359e9a322c7b 100644 --- a/drivers/sh/clk/cpg.c +++ b/drivers/sh/clk/cpg.c @@ -110,8 +110,7 @@ static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent) return 0; } -static int sh_clk_div6_set_rate(struct clk *clk, - unsigned long rate, int algo_id) +static int sh_clk_div6_set_rate(struct clk *clk, unsigned long rate) { unsigned long value; int idx; @@ -253,7 +252,7 @@ static int sh_clk_div4_set_parent(struct clk *clk, struct clk *parent) return 0; } -static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate, int algo_id) +static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate) { struct clk_div4_table *d4t = clk->priv; unsigned long value; diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 30885d928801..038475a2092f 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -23,7 +23,7 @@ struct clk_ops { int (*enable)(struct clk *clk); void (*disable)(struct clk *clk); unsigned long (*recalc)(struct clk *clk); - int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id); + int (*set_rate)(struct clk *clk, unsigned long rate); int (*set_parent)(struct clk *clk, struct clk *parent); long (*round_rate)(struct clk *clk, unsigned long rate); }; -- cgit v1.2.3 From 549015c36baadc6e67861bba6e927259e34c4d59 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Mon, 15 Nov 2010 18:48:25 +0900 Subject: sh: clkfwk: Disable init clk op for non-legacy clocks. Presently it's only legacy users that are using this clock op, guard it with an ifdef to ensure that no new users start using it. Signed-off-by: Paul Mundt --- include/linux/sh_clk.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 038475a2092f..9a52f72527dc 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -19,7 +19,9 @@ struct clk_mapping { }; struct clk_ops { +#ifdef CONFIG_SH_CLK_CPG_LEGACY void (*init)(struct clk *clk); +#endif int (*enable)(struct clk *clk); void (*disable)(struct clk *clk); unsigned long (*recalc)(struct clk *clk); -- cgit v1.2.3 From 3b42a96dc7870c53d20b419185737d3b8f7a7b74 Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Mon, 15 Nov 2010 06:01:59 +0000 Subject: net: rtnetlink.h -- only include linux/netdevice.h when used by the kernel MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The commit below added a new helper dev_ingress_queue to cleanly obtain the ingress queue pointer. This necessitated including 'linux/netdevice.h': commit 24824a09e35402b8d58dcc5be803a5ad3937bdba Author: Eric Dumazet Date: Sat Oct 2 06:11:55 2010 +0000 net: dynamic ingress_queue allocation However this include triggers issues for applications in userspace which use the rtnetlink interfaces. Commonly this requires they include 'net/if.h' and 'linux/rtnetlink.h' leading to a compiler error as below: In file included from /usr/include/linux/netdevice.h:28:0, from /usr/include/linux/rtnetlink.h:9, from t.c:2: /usr/include/linux/if.h:135:8: error: redefinition of ‘struct ifmap’ /usr/include/net/if.h:112:8: note: originally defined here /usr/include/linux/if.h:169:8: error: redefinition of ‘struct ifreq’ /usr/include/net/if.h:127:8: note: originally defined here /usr/include/linux/if.h:218:8: error: redefinition of ‘struct ifconf’ /usr/include/net/if.h:177:8: note: originally defined here The new helper is only defined for the kernel and protected by __KERNEL__ therefore we can simply pull the include down into the same protected section. Signed-off-by: Andy Whitcroft Signed-off-by: David S. Miller --- include/linux/rtnetlink.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index d42f274418b8..bbad657a3725 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -6,7 +6,6 @@ #include #include #include -#include /* rtnetlink families. Values up to 127 are reserved for real address * families, values above 128 may be used arbitrarily. @@ -606,6 +605,7 @@ struct tcamsg { #ifdef __KERNEL__ #include +#include static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) { -- cgit v1.2.3 From 62370e2b9376ea7b76e0423de28ccb322c17e2da Mon Sep 17 00:00:00 2001 From: Arnd Hannemann Date: Thu, 11 Nov 2010 11:44:32 -0600 Subject: b43legacy: Fix compile on ARM architecture When b43legacy is compiled on the arm platform, the following errors are seen: CC [M] drivers/net/wireless/b43legacy/xmit.o In file included from include/net/dst.h:11, from drivers/net/wireless/b43legacy/xmit.c:31: include/net/dst_ops.h:28: error: expected ':', ',', ';', '}' or '__attribute__' before '____cacheline_aligned_in_smp' include/net/dst_ops.h: In function 'dst_entries_get_fast': include/net/dst_ops.h:33: error: 'struct dst_ops' has no member named 'pcpuc_entries' include/net/dst_ops.h: In function 'dst_entries_get_slow': include/net/dst_ops.h:41: error: 'struct dst_ops' has no member named 'pcpuc_entries' include/net/dst_ops.h: In function 'dst_entries_add': include/net/dst_ops.h:49: error: 'struct dst_ops' has no member named 'pcpuc_entries' include/net/dst_ops.h: In function 'dst_entries_init': include/net/dst_ops.h:55: error: 'struct dst_ops' has no member named 'pcpuc_entries' include/net/dst_ops.h: In function 'dst_entries_destroy': include/net/dst_ops.h:60: error: 'struct dst_ops' has no member named 'pcpuc_entries' make[4]: *** [drivers/net/wireless/b43legacy/xmit.o] Error 1 make[3]: *** [drivers/net/wireless/b43legacy] Error 2 make[2]: *** [drivers/net/wireless] Error 2 make[1]: *** [drivers/net] Error 2 make: *** [drivers] Error 2 The cause is a missing include of , which is present for i386 and x86_64 architectures, but not for arm. Signed-off-by: Arnd Hannemann Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- include/net/dst_ops.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/net/dst_ops.h b/include/net/dst_ops.h index 1fa5306e3e23..51665b3461b8 100644 --- a/include/net/dst_ops.h +++ b/include/net/dst_ops.h @@ -2,6 +2,7 @@ #define _NET_DST_OPS_H #include #include +#include struct dst_entry; struct kmem_cachep; -- cgit v1.2.3 From 309075cf08ed92a7d2c0e22b7653c5daabbd7ad1 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Fri, 12 Nov 2010 08:53:56 +0200 Subject: cfg80211: fix WIPHY_FLAG_IBSS_RSN bit WIPHY_FLAG_IBSS_RSN is BIT(7) as is WIPHY_FLAG_CONTROL_PORT_PROTOCOL. Change to BIT(8). Signed-off-by: Jussi Kivilinna Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 2a7936d7851d..97b8b7c9b63c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1355,7 +1355,7 @@ enum wiphy_flags { WIPHY_FLAG_4ADDR_AP = BIT(5), WIPHY_FLAG_4ADDR_STATION = BIT(6), WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), - WIPHY_FLAG_IBSS_RSN = BIT(7), + WIPHY_FLAG_IBSS_RSN = BIT(8), }; struct mac_address { -- cgit v1.2.3 From e3a4d1d2de7251d4a00b04f50f6b3d2a1fc0fe5f Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Mon, 15 Nov 2010 05:03:13 -0500 Subject: fbdev: da8xx: punt duplicated FBIO_WAITFORVSYNC define This is already defined by linux/fb.h now, so punt the duplicate definition from the driver header. Signed-off-by: Mike Frysinger Signed-off-by: Paul Mundt --- include/video/da8xx-fb.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/video/da8xx-fb.h b/include/video/da8xx-fb.h index 6316cdabf73f..89d43b3d4cb9 100644 --- a/include/video/da8xx-fb.h +++ b/include/video/da8xx-fb.h @@ -99,7 +99,6 @@ struct lcd_sync_arg { #define FBIPUT_COLOR _IOW('F', 6, int) #define FBIPUT_HSYNC _IOW('F', 9, int) #define FBIPUT_VSYNC _IOW('F', 10, int) -#define FBIO_WAITFORVSYNC _IOW('F', 0x20, u_int32_t) #endif /* ifndef DA8XX_FB_H */ -- cgit v1.2.3 From 744f9f104ea262de1dc3e29265870c649f0d9473 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sat, 13 Nov 2010 11:44:39 -0500 Subject: xen: fix header export to userspace scripts/headers_install.pl prevents "__user" from being exported to userspace headers, so just use compiler.h to make sure that __user is defined and avoid the error. unifdef: linux-next-20101112/xx64/usr/include/xen/privcmd.h.tmp: 79: Premature EOF (#if line 33 depth 1) Signed-off-by: Randy Dunlap Cc: Jeremy Fitzhardinge Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xensource.com (moderated for non-subscribers) Cc: virtualization@lists.osdl.org Cc: Tony Finch Signed-off-by: Jeremy Fitzhardinge --- include/xen/privcmd.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'include') diff --git a/include/xen/privcmd.h b/include/xen/privcmd.h index b42cdfd92fee..17857fb4d550 100644 --- a/include/xen/privcmd.h +++ b/include/xen/privcmd.h @@ -34,13 +34,10 @@ #define __LINUX_PUBLIC_PRIVCMD_H__ #include +#include typedef unsigned long xen_pfn_t; -#ifndef __user -#define __user -#endif - struct privcmd_hypercall { __u64 op; __u64 arg[5]; -- cgit v1.2.3 From 1e7c7804884fc5751e3872f13498fd533325f8b2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 16 Nov 2010 12:11:02 +0300 Subject: fbcmap: integer overflow bug There is an integer overflow in fb_set_user_cmap() because cmap->len * 2 can wrap. It's basically harmless. Your terminal will be messed up until you type reset. This patch does three things to fix the bug. First, it checks the return value of fb_copy_cmap() in fb_alloc_cmap(). That is enough to fix address the overflow. Second it checks for the integer overflow in fb_set_user_cmap(). Lastly I wanted to cap "cmap->len" in fb_set_user_cmap() much lower because it gets used to determine the size of allocation. Unfortunately no one knows what the limit should be. Instead what this patch does is makes the allocation happen with GFP_KERNEL instead of GFP_ATOMIC and lets the kmalloc() decide what values of cmap->len are reasonable. To do this, the patch introduces a function called fb_alloc_cmap_gfp() which is like fb_alloc_cmap() except that it takes a GFP flag. Signed-off-by: Dan Carpenter Signed-off-by: Paul Mundt --- drivers/video/fbcmap.c | 28 ++++++++++++++++++++-------- include/linux/fb.h | 1 + 2 files changed, 21 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/drivers/video/fbcmap.c b/drivers/video/fbcmap.c index a79b9762901e..affdf3e32cf3 100644 --- a/drivers/video/fbcmap.c +++ b/drivers/video/fbcmap.c @@ -88,26 +88,27 @@ static const struct fb_cmap default_16_colors = { * */ -int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp) +int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags) { int size = len * sizeof(u16); + int ret = -ENOMEM; if (cmap->len != len) { fb_dealloc_cmap(cmap); if (!len) return 0; - cmap->red = kmalloc(size, GFP_ATOMIC); + cmap->red = kmalloc(size, flags); if (!cmap->red) goto fail; - cmap->green = kmalloc(size, GFP_ATOMIC); + cmap->green = kmalloc(size, flags); if (!cmap->green) goto fail; - cmap->blue = kmalloc(size, GFP_ATOMIC); + cmap->blue = kmalloc(size, flags); if (!cmap->blue) goto fail; if (transp) { - cmap->transp = kmalloc(size, GFP_ATOMIC); + cmap->transp = kmalloc(size, flags); if (!cmap->transp) goto fail; } else { @@ -116,12 +117,19 @@ int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp) } cmap->start = 0; cmap->len = len; - fb_copy_cmap(fb_default_cmap(len), cmap); + ret = fb_copy_cmap(fb_default_cmap(len), cmap); + if (ret) + goto fail; return 0; fail: fb_dealloc_cmap(cmap); - return -ENOMEM; + return ret; +} + +int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp) +{ + return fb_alloc_cmap_gfp(cmap, len, transp, GFP_ATOMIC); } /** @@ -256,8 +264,12 @@ int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *info) int rc, size = cmap->len * sizeof(u16); struct fb_cmap umap; + if (size < 0 || size < cmap->len) + return -E2BIG; + memset(&umap, 0, sizeof(struct fb_cmap)); - rc = fb_alloc_cmap(&umap, cmap->len, cmap->transp != NULL); + rc = fb_alloc_cmap_gfp(&umap, cmap->len, cmap->transp != NULL, + GFP_KERNEL); if (rc) return rc; if (copy_from_user(umap.red, cmap->red, size) || diff --git a/include/linux/fb.h b/include/linux/fb.h index 7fca3dc4e475..d1631d37e9e0 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -1122,6 +1122,7 @@ extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs /* drivers/video/fbcmap.c */ extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp); +extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags); extern void fb_dealloc_cmap(struct fb_cmap *cmap); extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to); extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to); -- cgit v1.2.3 From f13b32630dda7e583a84a8c535880cff7e4a9bdd Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Sun, 10 Oct 2010 06:01:08 +0200 Subject: drm/nouveau: Expose some BO usage flags to userspace. This will be needed for Z compression and to take smarter placement decisions. Signed-off-by: Francisco Jerez Acked-by: Ben Skeggs Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_bo.c | 15 +++++++++----- drivers/gpu/drm/nouveau/nouveau_drv.h | 3 +++ drivers/gpu/drm/nouveau/nouveau_gem.c | 36 +++++++++++++++++++-------------- drivers/gpu/drm/nouveau/nouveau_state.c | 3 +++ drivers/gpu/drm/nouveau/nv50_crtc.c | 4 ++-- include/drm/nouveau_drm.h | 7 +++++++ 6 files changed, 46 insertions(+), 22 deletions(-) (limited to 'include') diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 80353e2b8409..f55dd9145b7c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -144,7 +144,8 @@ nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan, nvbo->tile_mode = tile_mode; nvbo->tile_flags = tile_flags; - nouveau_bo_fixup_align(dev, tile_mode, tile_flags, &align, &size); + nouveau_bo_fixup_align(dev, tile_mode, nouveau_bo_tile_layout(nvbo), + &align, &size); align >>= PAGE_SHIFT; nouveau_bo_placement_set(nvbo, flags, 0); @@ -525,7 +526,8 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo, stride = 16 * 4; height = amount / stride; - if (new_mem->mem_type == TTM_PL_VRAM && nvbo->tile_flags) { + if (new_mem->mem_type == TTM_PL_VRAM && + nouveau_bo_tile_layout(nvbo)) { ret = RING_SPACE(chan, 8); if (ret) return ret; @@ -546,7 +548,8 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo, BEGIN_RING(chan, NvSubM2MF, 0x0200, 1); OUT_RING (chan, 1); } - if (old_mem->mem_type == TTM_PL_VRAM && nvbo->tile_flags) { + if (old_mem->mem_type == TTM_PL_VRAM && + nouveau_bo_tile_layout(nvbo)) { ret = RING_SPACE(chan, 8); if (ret) return ret; @@ -753,7 +756,8 @@ nouveau_bo_vm_bind(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem, if (dev_priv->card_type == NV_50) { ret = nv50_mem_vm_bind_linear(dev, offset + dev_priv->vm_vram_base, - new_mem->size, nvbo->tile_flags, + new_mem->size, + nouveau_bo_tile_layout(nvbo), offset); if (ret) return ret; @@ -894,7 +898,8 @@ nouveau_ttm_fault_reserve_notify(struct ttm_buffer_object *bo) * nothing to do here. */ if (bo->mem.mem_type != TTM_PL_VRAM) { - if (dev_priv->card_type < NV_50 || !nvbo->tile_flags) + if (dev_priv->card_type < NV_50 || + !nouveau_bo_tile_layout(nvbo)) return 0; } diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index 135594c44167..60a54fae90c1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -100,6 +100,9 @@ struct nouveau_bo { int pin_refcnt; }; +#define nouveau_bo_tile_layout(nvbo) \ + ((nvbo)->tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) + static inline struct nouveau_bo * nouveau_bo(struct ttm_buffer_object *bo) { diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 5c4c929d7f74..9a1fdcf400c2 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -107,23 +107,29 @@ nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep) } static bool -nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) { - switch (tile_flags) { - case 0x0000: - case 0x1800: - case 0x2800: - case 0x4800: - case 0x7000: - case 0x7400: - case 0x7a00: - case 0xe000: - break; - default: - NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags); - return false; +nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + + if (dev_priv->card_type >= NV_50) { + switch (tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) { + case 0x0000: + case 0x1800: + case 0x2800: + case 0x4800: + case 0x7000: + case 0x7400: + case 0x7a00: + case 0xe000: + return true; + } + } else { + if (!(tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK)) + return true; } - return true; + NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags); + return false; } int diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c index af2bec36d91b..ea3452194cd6 100644 --- a/drivers/gpu/drm/nouveau/nouveau_state.c +++ b/drivers/gpu/drm/nouveau/nouveau_state.c @@ -1041,6 +1041,9 @@ int nouveau_ioctl_getparam(struct drm_device *dev, void *data, case NOUVEAU_GETPARAM_PTIMER_TIME: getparam->value = dev_priv->engine.timer.read(dev); break; + case NOUVEAU_GETPARAM_HAS_BO_USAGE: + getparam->value = 1; + break; case NOUVEAU_GETPARAM_GRAPH_UNITS: /* NV40 and NV50 versions are quite different, but register * address is the same. User is supposed to know the card diff --git a/drivers/gpu/drm/nouveau/nv50_crtc.c b/drivers/gpu/drm/nouveau/nv50_crtc.c index 16380d52cd88..56476d0c6de8 100644 --- a/drivers/gpu/drm/nouveau/nv50_crtc.c +++ b/drivers/gpu/drm/nouveau/nv50_crtc.c @@ -546,7 +546,7 @@ nv50_crtc_do_mode_set_base(struct drm_crtc *crtc, } nv_crtc->fb.offset = fb->nvbo->bo.offset - dev_priv->vm_vram_base; - nv_crtc->fb.tile_flags = fb->nvbo->tile_flags; + nv_crtc->fb.tile_flags = nouveau_bo_tile_layout(fb->nvbo); nv_crtc->fb.cpp = drm_fb->bits_per_pixel / 8; if (!nv_crtc->fb.blanked && dev_priv->chipset != 0x50) { ret = RING_SPACE(evo, 2); @@ -578,7 +578,7 @@ nv50_crtc_do_mode_set_base(struct drm_crtc *crtc, fb->nvbo->tile_mode); } if (dev_priv->chipset == 0x50) - OUT_RING(evo, (fb->nvbo->tile_flags << 8) | format); + OUT_RING(evo, (nv_crtc->fb.tile_flags << 8) | format); else OUT_RING(evo, format); diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h index 01a714119506..bc5590b1a1ac 100644 --- a/include/drm/nouveau_drm.h +++ b/include/drm/nouveau_drm.h @@ -80,6 +80,7 @@ struct drm_nouveau_gpuobj_free { #define NOUVEAU_GETPARAM_VM_VRAM_BASE 12 #define NOUVEAU_GETPARAM_GRAPH_UNITS 13 #define NOUVEAU_GETPARAM_PTIMER_TIME 14 +#define NOUVEAU_GETPARAM_HAS_BO_USAGE 15 struct drm_nouveau_getparam { uint64_t param; uint64_t value; @@ -95,6 +96,12 @@ struct drm_nouveau_setparam { #define NOUVEAU_GEM_DOMAIN_GART (1 << 2) #define NOUVEAU_GEM_DOMAIN_MAPPABLE (1 << 3) +#define NOUVEAU_GEM_TILE_LAYOUT_MASK 0x0000ff00 +#define NOUVEAU_GEM_TILE_16BPP 0x00000001 +#define NOUVEAU_GEM_TILE_32BPP 0x00000002 +#define NOUVEAU_GEM_TILE_ZETA 0x00000004 +#define NOUVEAU_GEM_TILE_NONCONTIG 0x00000008 + struct drm_nouveau_gem_info { uint32_t handle; uint32_t domain; -- cgit v1.2.3 From ef22b7b65f0eda9015becc7bff225a399914a242 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Thu, 18 Nov 2010 09:40:04 -0800 Subject: net: Fix duplicate volatile warning. jiffies is defined as "volatile". extern unsigned long volatile __jiffy_data jiffies; ACCESS_ONCE() uses "volatile". As a result, some compilers warn duplicate `volatile' for ACCESS_ONCE(jiffies). Signed-off-by: Tetsuo Handa Signed-off-by: David S. Miller --- include/net/neighbour.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/neighbour.h b/include/net/neighbour.h index 55590ab16b3e..6beb1ffc2b7f 100644 --- a/include/net/neighbour.h +++ b/include/net/neighbour.h @@ -303,7 +303,7 @@ static inline void neigh_confirm(struct neighbour *neigh) static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb) { - unsigned long now = ACCESS_ONCE(jiffies); + unsigned long now = jiffies; if (neigh->used != now) neigh->used = now; -- cgit v1.2.3 From ed1d77b18c9f4ff06d5b42c65041aa55a1447053 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 18 Nov 2010 10:56:29 -0800 Subject: hardirq.h: needs sched.h if using BKL This really isn't the right thing to do, and strictly speaking we should have the BKL depth count in the thread info right next to the preempt count. The two really do go together. However, since that would involve a patch to all architectures, and the BKL is finally going away, it's simply not worth the effort to do the RightThing(tm). Just re-instate the include that we used to get accidentally from the smp_lock.h one. This is all fallout from the same old "BKL: remove extraneous #include " commit. Reported-by: Ingo Molnar Tested-by: Randy Dunlap Cc: Arnd Bergmann Signed-off-by: Linus Torvalds --- include/linux/hardirq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 714da7e5d10c..32f9fd6619b4 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -94,6 +94,7 @@ #define in_nmi() (preempt_count() & NMI_MASK) #if defined(CONFIG_PREEMPT) && defined(CONFIG_BKL) +# include # define PREEMPT_INATOMIC_BASE (current->lock_depth >= 0) #else # define PREEMPT_INATOMIC_BASE 0 -- cgit v1.2.3 From ed919b0125b26dcc052e44836f66e7e1f5c49c7e Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Fri, 19 Nov 2010 09:29:09 +0200 Subject: mmc: sdio: fix runtime PM anomalies by introducing MMC_CAP_POWER_OFF_CARD Some board/card/host configurations are not capable of powering off the card after boot. To support such configurations, and to allow smoother transition to runtime PM behavior, MMC_CAP_POWER_OFF_CARD is added, so hosts need to explicitly indicate whether it's OK to power off their cards after boot. SDIO core will enable runtime PM for a card only if that cap is set. As a result, the card will be powered down after boot, and will only be powered up again when a driver is loaded (and then it's up to the driver to decide whether power will be kept or not). This will prevent sdio_bus_probe() failures with setups that do not support powering off the card. Reported-and-tested-by: Daniel Drake Reported-and-tested-by: Arnd Hannemann Signed-off-by: Ohad Ben-Cohen Signed-off-by: Chris Ball --- drivers/mmc/core/sdio.c | 37 +++++++++++++++++++++++-------------- drivers/mmc/core/sdio_bus.c | 33 ++++++++++++++++++++++----------- include/linux/mmc/host.h | 1 + 3 files changed, 46 insertions(+), 25 deletions(-) (limited to 'include') diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 42a949b723b8..efef5f94ac42 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -547,9 +547,11 @@ static void mmc_sdio_detect(struct mmc_host *host) BUG_ON(!host->card); /* Make sure card is powered before detecting it */ - err = pm_runtime_get_sync(&host->card->dev); - if (err < 0) - goto out; + if (host->caps & MMC_CAP_POWER_OFF_CARD) { + err = pm_runtime_get_sync(&host->card->dev); + if (err < 0) + goto out; + } mmc_claim_host(host); @@ -571,7 +573,8 @@ static void mmc_sdio_detect(struct mmc_host *host) * is about to show up at this point, the _sync variant is * desirable anyway. */ - pm_runtime_put_sync(&host->card->dev); + if (host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_sync(&host->card->dev); out: if (err) { @@ -728,16 +731,21 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr) card = host->card; /* - * Let runtime PM core know our card is active + * Enable runtime PM only if supported by host+card+board */ - err = pm_runtime_set_active(&card->dev); - if (err) - goto remove; + if (host->caps & MMC_CAP_POWER_OFF_CARD) { + /* + * Let runtime PM core know our card is active + */ + err = pm_runtime_set_active(&card->dev); + if (err) + goto remove; - /* - * Enable runtime PM for this card - */ - pm_runtime_enable(&card->dev); + /* + * Enable runtime PM for this card + */ + pm_runtime_enable(&card->dev); + } /* * The number of functions on the card is encoded inside @@ -755,9 +763,10 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr) goto remove; /* - * Enable Runtime PM for this func + * Enable Runtime PM for this func (if supported) */ - pm_runtime_enable(&card->sdio_func[i]->dev); + if (host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_enable(&card->sdio_func[i]->dev); } mmc_release_host(host); diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 2716c7ab6bbf..203da443e339 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -17,6 +17,7 @@ #include #include +#include #include #include "sdio_cis.h" @@ -132,9 +133,11 @@ static int sdio_bus_probe(struct device *dev) * it should call pm_runtime_put_noidle() in its probe routine and * pm_runtime_get_noresume() in its remove routine. */ - ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto out; + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) { + ret = pm_runtime_get_sync(dev); + if (ret < 0) + goto out; + } /* Set the default block size so the driver is sure it's something * sensible. */ @@ -151,7 +154,8 @@ static int sdio_bus_probe(struct device *dev) return 0; disable_runtimepm: - pm_runtime_put_noidle(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_noidle(dev); out: return ret; } @@ -160,12 +164,14 @@ static int sdio_bus_remove(struct device *dev) { struct sdio_driver *drv = to_sdio_driver(dev->driver); struct sdio_func *func = dev_to_sdio_func(dev); - int ret; + int ret = 0; /* Make sure card is powered before invoking ->remove() */ - ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto out; + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) { + ret = pm_runtime_get_sync(dev); + if (ret < 0) + goto out; + } drv->remove(func); @@ -178,10 +184,12 @@ static int sdio_bus_remove(struct device *dev) } /* First, undo the increment made directly above */ - pm_runtime_put_noidle(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_noidle(dev); /* Then undo the runtime PM settings in sdio_bus_probe() */ - pm_runtime_put_noidle(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_put_noidle(dev); out: return ret; @@ -191,6 +199,8 @@ out: static int sdio_bus_pm_prepare(struct device *dev) { + struct sdio_func *func = dev_to_sdio_func(dev); + /* * Resume an SDIO device which was suspended at run time at this * point, in order to allow standard SDIO suspend/resume paths @@ -212,7 +222,8 @@ static int sdio_bus_pm_prepare(struct device *dev) * since there is little point in failing system suspend if a * device can't be resumed. */ - pm_runtime_resume(dev); + if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) + pm_runtime_resume(dev); return 0; } diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 6d87f68ce4b6..30f6fad99a58 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -168,6 +168,7 @@ struct mmc_host { /* DDR mode at 1.8V */ #define MMC_CAP_1_2V_DDR (1 << 12) /* can support */ /* DDR mode at 1.2V */ +#define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off after boot */ mmc_pm_flag_t pm_caps; /* supported pm features */ -- cgit v1.2.3 From 93bb41f4f8b89ac8b4d0a734bc59634cb0a29a89 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 19 Nov 2010 21:18:35 -0500 Subject: fs: Do not dispatch FITRIM through separate super_operation There was concern that FITRIM ioctl is not common enough to be included in core vfs ioctl, as Christoph Hellwig pointed out there's no real point in dispatching this out to a separate vector instead of just through ->ioctl. So this commit removes ioctl_fstrim() from vfs ioctl and trim_fs from super_operation structure. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/super.c | 1 - fs/ioctl.c | 39 --------------------------------------- include/linux/fs.h | 1 - 3 files changed, 41 deletions(-) (limited to 'include') diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 14ada8c50c43..e32195d6aac3 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1197,7 +1197,6 @@ static const struct super_operations ext4_sops = { .quota_write = ext4_quota_write, #endif .bdev_try_to_free_page = bdev_try_to_free_page, - .trim_fs = ext4_trim_fs }; static const struct super_operations ext4_nojournal_sops = { diff --git a/fs/ioctl.c b/fs/ioctl.c index e92fdbb3bc3a..f855ea4fc888 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -530,41 +530,6 @@ static int ioctl_fsthaw(struct file *filp) return thaw_super(sb); } -static int ioctl_fstrim(struct file *filp, void __user *argp) -{ - struct super_block *sb = filp->f_path.dentry->d_inode->i_sb; - struct fstrim_range range; - int ret = 0; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - /* If filesystem doesn't support trim feature, return. */ - if (sb->s_op->trim_fs == NULL) - return -EOPNOTSUPP; - - /* If a blockdevice-backed filesystem isn't specified, return EINVAL. */ - if (sb->s_bdev == NULL) - return -EINVAL; - - if (argp == NULL) { - range.start = 0; - range.len = ULLONG_MAX; - range.minlen = 0; - } else if (copy_from_user(&range, argp, sizeof(range))) - return -EFAULT; - - ret = sb->s_op->trim_fs(sb, &range); - if (ret < 0) - return ret; - - if ((argp != NULL) && - (copy_to_user(argp, &range, sizeof(range)))) - return -EFAULT; - - return 0; -} - /* * When you add any new common ioctls to the switches above and below * please update compat_sys_ioctl() too. @@ -615,10 +580,6 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd, error = ioctl_fsthaw(filp); break; - case FITRIM: - error = ioctl_fstrim(filp, argp); - break; - case FS_IOC_FIEMAP: return ioctl_fiemap(filp, arg); diff --git a/include/linux/fs.h b/include/linux/fs.h index 334d68a17108..eedc00b7b1ee 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1612,7 +1612,6 @@ struct super_operations { ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); #endif int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); - int (*trim_fs) (struct super_block *, struct fstrim_range *); }; /* -- cgit v1.2.3 From 9be4d4575906af9698de660e477f949a076c87e1 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Tue, 31 Aug 2010 15:01:16 -0700 Subject: xen: add extra pages to balloon Add extra pages in the pseudo-physical address space to the balloon so we can extend into them later. Signed-off-by: Jeremy Fitzhardinge --- drivers/xen/balloon.c | 15 +++++++++++---- include/xen/page.h | 7 +++++++ 2 files changed, 18 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 500290b150bb..df26ee9caa68 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -119,7 +119,7 @@ static void scrub_page(struct page *page) } /* balloon_append: add the given page to the balloon. */ -static void balloon_append(struct page *page) +static void __balloon_append(struct page *page) { /* Lowmem is re-populated first, so highmem pages go at list tail. */ if (PageHighMem(page)) { @@ -130,7 +130,11 @@ static void balloon_append(struct page *page) list_add(&page->lru, &ballooned_pages); balloon_stats.balloon_low++; } +} +static void balloon_append(struct page *page) +{ + __balloon_append(page); totalram_pages--; } @@ -416,10 +420,13 @@ static int __init balloon_init(void) register_balloon(&balloon_sysdev); /* Initialise the balloon with excess memory space. */ - for (pfn = xen_start_info->nr_pages; pfn < max_pfn; pfn++) { + for (pfn = PFN_UP(xen_extra_mem_start); + pfn < PFN_DOWN(xen_extra_mem_start + xen_extra_mem_size); + pfn++) { page = pfn_to_page(pfn); - if (!PageReserved(page)) - balloon_append(page); + /* totalram_pages doesn't include the boot-time + balloon extension, so don't subtract from it. */ + __balloon_append(page); } target_watch.callback = watch_target; diff --git a/include/xen/page.h b/include/xen/page.h index eaf85fab1263..0be36b976f4b 100644 --- a/include/xen/page.h +++ b/include/xen/page.h @@ -1 +1,8 @@ +#ifndef _XEN_PAGE_H +#define _XEN_PAGE_H + #include + +extern phys_addr_t xen_extra_mem_start, xen_extra_mem_size; + +#endif /* _XEN_PAGE_H */ -- cgit v1.2.3 From 07a8cdd2bb17a4da68136d963b8bc71959bd31a5 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Thu, 18 Nov 2010 18:54:17 +0530 Subject: usb: musb: do not use dma for control transfers The Inventra DMA engine used with the MUSB controller in many SoCs cannot use DMA for control transfers on EP0, but can use DMA for all other transfers. The USB core maps urbs for DMA if hcd->self.uses_dma is true. (hcd->self.uses_dma is true for MUSB as well). Split the uses_dma flag into two - one that says if the controller needs to use PIO for control transfers, and another which says if the controller uses DMA (for all other transfers). Also, populate this flag for all MUSB by default. (Tested on OMAP3 and OMAP4 boards, with EHCI and MUSB HCDs simultaneously in use). Signed-off-by: Maulik Mankad Signed-off-by: Santosh Shilimkar Signed-off-by: Anand Gadiyar Cc: Oliver Neukum Cc: Alan Stern Cc: Praveena NADAHALLY Cc: Ajay Kumar Gupta Signed-off-by: Felipe Balbi --- drivers/usb/core/hcd.c | 2 ++ drivers/usb/musb/musb_core.c | 3 +++ drivers/usb/musb/musb_gadget.c | 4 ++++ include/linux/usb.h | 4 ++++ 4 files changed, 13 insertions(+) (limited to 'include') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 61800f77dac8..ced846ac4141 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1330,6 +1330,8 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, */ if (usb_endpoint_xfer_control(&urb->ep->desc)) { + if (hcd->self.uses_pio_for_control) + return ret; if (hcd->self.uses_dma) { urb->setup_dma = dma_map_single( hcd->self.controller, diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index e6669fc3b804..99beebce8550 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2116,12 +2116,15 @@ bad_config: * Otherwise, wait till the gadget driver hooks up. */ if (!is_otg_enabled(musb) && is_host_enabled(musb)) { + struct usb_hcd *hcd = musb_to_hcd(musb); + MUSB_HST_MODE(musb); musb->xceiv->default_a = 1; musb->xceiv->state = OTG_STATE_A_IDLE; status = usb_add_hcd(musb_to_hcd(musb), -1, 0); + hcd->self.uses_pio_for_control = 1; DBG(1, "%s mode, status %d, devctl %02x %c\n", "HOST", status, musb_readb(musb->mregs, MUSB_DEVCTL), diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index c8de0e123f2c..9d6ade82b9f2 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1833,6 +1833,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, spin_unlock_irqrestore(&musb->lock, flags); if (is_otg_enabled(musb)) { + struct usb_hcd *hcd = musb_to_hcd(musb); + DBG(3, "OTG startup...\n"); /* REVISIT: funcall to other code, which also @@ -1847,6 +1849,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, musb->gadget_driver = NULL; musb->g.dev.driver = NULL; spin_unlock_irqrestore(&musb->lock, flags); + } else { + hcd->self.uses_pio_for_control = 1; } } } diff --git a/include/linux/usb.h b/include/linux/usb.h index 24300d8a1bc1..a28eb2592577 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -313,6 +313,10 @@ struct usb_bus { int busnum; /* Bus number (in order of reg) */ const char *bus_name; /* stable id (PCI slot_name etc) */ u8 uses_dma; /* Does the host controller use DMA? */ + u8 uses_pio_for_control; /* + * Does the host controller use PIO + * for control transfers? + */ u8 otg_port; /* 0, or number of OTG/HNP port */ unsigned is_b_host:1; /* true during some HNP roleswitches */ unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */ -- cgit v1.2.3 From 9a1f8b34aa539000da17a06235e4bec254d0bfb5 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 24 Sep 2010 10:16:44 -0300 Subject: [media] v4l: Remove module_name argument to the v4l2_i2c_new_subdev* functions The argument isn't used anymore by the functions, remove it. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-si4713.c | 2 +- drivers/media/video/au0828/au0828-cards.c | 4 ++-- drivers/media/video/bt8xx/bttv-cards.c | 22 +++++++++++----------- drivers/media/video/cafe_ccic.c | 2 +- drivers/media/video/cx18/cx18-i2c.c | 8 ++++---- drivers/media/video/cx231xx/cx231xx-cards.c | 4 ++-- drivers/media/video/cx23885/cx23885-cards.c | 2 +- drivers/media/video/cx23885/cx23885-video.c | 4 ++-- drivers/media/video/cx88/cx88-cards.c | 9 ++++----- drivers/media/video/cx88/cx88-video.c | 7 +++---- drivers/media/video/davinci/vpfe_capture.c | 1 - drivers/media/video/davinci/vpif_capture.c | 1 - drivers/media/video/davinci/vpif_display.c | 2 +- drivers/media/video/em28xx/em28xx-cards.c | 18 +++++++++--------- drivers/media/video/fsl-viu.c | 2 +- drivers/media/video/ivtv/ivtv-i2c.c | 22 +++++++++------------- drivers/media/video/mxb.c | 12 ++++++------ drivers/media/video/pvrusb2/pvrusb2-hdw.c | 6 ++---- drivers/media/video/s5p-fimc/fimc-capture.c | 2 +- drivers/media/video/saa7134/saa7134-cards.c | 8 ++++---- drivers/media/video/saa7134/saa7134-core.c | 4 ++-- drivers/media/video/sh_vou.c | 2 +- drivers/media/video/soc_camera.c | 2 +- drivers/media/video/usbvision/usbvision-i2c.c | 6 +++--- drivers/media/video/v4l2-common.c | 15 +++++---------- drivers/media/video/via-camera.c | 2 +- drivers/media/video/vino.c | 4 ++-- drivers/media/video/zoran/zoran_card.c | 5 ++--- drivers/staging/go7007/go7007-driver.c | 2 +- drivers/staging/tm6000/tm6000-cards.c | 4 ++-- include/media/v4l2-common.h | 16 ++++++---------- 31 files changed, 90 insertions(+), 110 deletions(-) (limited to 'include') diff --git a/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c index 6a435786b63d..03829e6818bd 100644 --- a/drivers/media/radio/radio-si4713.c +++ b/drivers/media/radio/radio-si4713.c @@ -291,7 +291,7 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev) goto unregister_v4l2_dev; } - sd = v4l2_i2c_new_subdev_board(&rsdev->v4l2_dev, adapter, NULL, + sd = v4l2_i2c_new_subdev_board(&rsdev->v4l2_dev, adapter, pdata->subdev_board_info, NULL); if (!sd) { dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n"); diff --git a/drivers/media/video/au0828/au0828-cards.c b/drivers/media/video/au0828/au0828-cards.c index 0453816d4ec3..01be89fa5c78 100644 --- a/drivers/media/video/au0828/au0828-cards.c +++ b/drivers/media/video/au0828/au0828-cards.c @@ -212,7 +212,7 @@ void au0828_card_setup(struct au0828_dev *dev) be abstracted out if we ever need to support a different demod) */ sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "au8522", 0x8e >> 1, NULL); + "au8522", 0x8e >> 1, NULL); if (sd == NULL) printk(KERN_ERR "analog subdev registration failed\n"); } @@ -221,7 +221,7 @@ void au0828_card_setup(struct au0828_dev *dev) if (dev->board.tuner_type != TUNER_ABSENT) { /* Load the tuner module, which does the attach */ sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tuner", dev->board.tuner_addr, NULL); + "tuner", dev->board.tuner_addr, NULL); if (sd == NULL) printk(KERN_ERR "tuner subdev registration fail\n"); diff --git a/drivers/media/video/bt8xx/bttv-cards.c b/drivers/media/video/bt8xx/bttv-cards.c index 87d8b006ef77..49efcf660ba6 100644 --- a/drivers/media/video/bt8xx/bttv-cards.c +++ b/drivers/media/video/bt8xx/bttv-cards.c @@ -3529,7 +3529,7 @@ void __devinit bttv_init_card2(struct bttv *btv) struct v4l2_subdev *sd; sd = v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "saa6588", 0, addrs); + &btv->c.i2c_adap, "saa6588", 0, addrs); btv->has_saa6588 = (sd != NULL); } @@ -3554,7 +3554,7 @@ void __devinit bttv_init_card2(struct bttv *btv) }; btv->sd_msp34xx = v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "msp3400", 0, addrs); + &btv->c.i2c_adap, "msp3400", 0, addrs); if (btv->sd_msp34xx) return; goto no_audio; @@ -3568,7 +3568,7 @@ void __devinit bttv_init_card2(struct bttv *btv) }; if (v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tda7432", 0, addrs)) + &btv->c.i2c_adap, "tda7432", 0, addrs)) return; goto no_audio; } @@ -3576,7 +3576,7 @@ void __devinit bttv_init_card2(struct bttv *btv) case 3: { /* The user specified that we should probe for tvaudio */ btv->sd_tvaudio = v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tvaudio", 0, tvaudio_addrs()); + &btv->c.i2c_adap, "tvaudio", 0, tvaudio_addrs()); if (btv->sd_tvaudio) return; goto no_audio; @@ -3596,11 +3596,11 @@ void __devinit bttv_init_card2(struct bttv *btv) found is really something else (e.g. a tea6300). */ if (!bttv_tvcards[btv->c.type].no_msp34xx) { btv->sd_msp34xx = v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "msp3400", + &btv->c.i2c_adap, "msp3400", 0, I2C_ADDRS(I2C_ADDR_MSP3400 >> 1)); } else if (bttv_tvcards[btv->c.type].msp34xx_alt) { btv->sd_msp34xx = v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "msp3400", + &btv->c.i2c_adap, "msp3400", 0, I2C_ADDRS(I2C_ADDR_MSP3400_ALT >> 1)); } @@ -3616,13 +3616,13 @@ void __devinit bttv_init_card2(struct bttv *btv) }; if (v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tda7432", 0, addrs)) + &btv->c.i2c_adap, "tda7432", 0, addrs)) return; } /* Now see if we can find one of the tvaudio devices. */ btv->sd_tvaudio = v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tvaudio", 0, tvaudio_addrs()); + &btv->c.i2c_adap, "tvaudio", 0, tvaudio_addrs()); if (btv->sd_tvaudio) return; @@ -3646,13 +3646,13 @@ void __devinit bttv_init_tuner(struct bttv *btv) /* Load tuner module before issuing tuner config call! */ if (bttv_tvcards[btv->c.type].has_radio) v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tuner", + &btv->c.i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_RADIO)); v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tuner", + &btv->c.i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); v4l2_i2c_new_subdev(&btv->c.v4l2_dev, - &btv->c.i2c_adap, NULL, "tuner", + &btv->c.i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_TV_WITH_DEMOD)); tun_setup.mode_mask = T_ANALOG_TV | T_DIGITAL_TV; diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c index 61a58d475b78..260c666ce931 100644 --- a/drivers/media/video/cafe_ccic.c +++ b/drivers/media/video/cafe_ccic.c @@ -2066,7 +2066,7 @@ static int cafe_pci_probe(struct pci_dev *pdev, cam->sensor_addr = 0x42; cam->sensor = v4l2_i2c_new_subdev_cfg(&cam->v4l2_dev, &cam->i2c_adapter, - NULL, "ov7670", 0, &sensor_cfg, cam->sensor_addr, NULL); + "ov7670", 0, &sensor_cfg, cam->sensor_addr, NULL); if (cam->sensor == NULL) { ret = -ENODEV; goto out_smbus; diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c index a09caf883170..e71a026f3419 100644 --- a/drivers/media/video/cx18/cx18-i2c.c +++ b/drivers/media/video/cx18/cx18-i2c.c @@ -122,15 +122,15 @@ int cx18_i2c_register(struct cx18 *cx, unsigned idx) if (hw == CX18_HW_TUNER) { /* special tuner group handling */ sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, - adap, NULL, type, 0, cx->card_i2c->radio); + adap, type, 0, cx->card_i2c->radio); if (sd != NULL) sd->grp_id = hw; sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, - adap, NULL, type, 0, cx->card_i2c->demod); + adap, type, 0, cx->card_i2c->demod); if (sd != NULL) sd->grp_id = hw; sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, - adap, NULL, type, 0, cx->card_i2c->tv); + adap, type, 0, cx->card_i2c->tv); if (sd != NULL) sd->grp_id = hw; return sd != NULL ? 0 : -1; @@ -144,7 +144,7 @@ int cx18_i2c_register(struct cx18 *cx, unsigned idx) return -1; /* It's an I2C device other than an analog tuner or IR chip */ - sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, adap, NULL, type, hw_addrs[idx], + sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, adap, type, hw_addrs[idx], NULL); if (sd != NULL) sd->grp_id = hw; diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c index 56c2d8195ac6..2c78d188bb06 100644 --- a/drivers/media/video/cx231xx/cx231xx-cards.c +++ b/drivers/media/video/cx231xx/cx231xx-cards.c @@ -560,7 +560,7 @@ void cx231xx_card_setup(struct cx231xx *dev) if (dev->board.decoder == CX231XX_AVDECODER) { dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_bus[0].i2c_adap, - NULL, "cx25840", 0x88 >> 1, NULL); + "cx25840", 0x88 >> 1, NULL); if (dev->sd_cx25840 == NULL) cx231xx_info("cx25840 subdev registration failure\n"); cx25840_call(dev, core, load_fw); @@ -571,7 +571,7 @@ void cx231xx_card_setup(struct cx231xx *dev) if (dev->board.tuner_type != TUNER_ABSENT) { dev->sd_tuner = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_bus[dev->board.tuner_i2c_master].i2c_adap, - NULL, "tuner", + "tuner", dev->tuner_addr, NULL); if (dev->sd_tuner == NULL) cx231xx_info("tuner subdev registration failure\n"); diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c index db054004e462..8861309268b1 100644 --- a/drivers/media/video/cx23885/cx23885-cards.c +++ b/drivers/media/video/cx23885/cx23885-cards.c @@ -1247,7 +1247,7 @@ void cx23885_card_setup(struct cx23885_dev *dev) case CX23885_BOARD_LEADTEK_WINFAST_PXTV1200: dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_bus[2].i2c_adap, - NULL, "cx25840", 0x88 >> 1, NULL); + "cx25840", 0x88 >> 1, NULL); if (dev->sd_cx25840) { dev->sd_cx25840->grp_id = CX23885_HW_AV_CORE; v4l2_subdev_call(dev->sd_cx25840, core, load_fw); diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c index 3cc9f462d08d..8b2fb8a4375c 100644 --- a/drivers/media/video/cx23885/cx23885-video.c +++ b/drivers/media/video/cx23885/cx23885-video.c @@ -1507,10 +1507,10 @@ int cx23885_video_register(struct cx23885_dev *dev) if (dev->tuner_addr) sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_bus[1].i2c_adap, - NULL, "tuner", dev->tuner_addr, NULL); + "tuner", dev->tuner_addr, NULL); else sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_bus[1].i2c_adap, NULL, + &dev->i2c_bus[1].i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_TV)); if (sd) { struct tuner_setup tun_setup; diff --git a/drivers/media/video/cx88/cx88-cards.c b/drivers/media/video/cx88/cx88-cards.c index b26fcba8600c..9b9e169cce90 100644 --- a/drivers/media/video/cx88/cx88-cards.c +++ b/drivers/media/video/cx88/cx88-cards.c @@ -3515,19 +3515,18 @@ struct cx88_core *cx88_core_create(struct pci_dev *pci, int nr) later code configures a tea5767. */ v4l2_i2c_new_subdev(&core->v4l2_dev, &core->i2c_adap, - NULL, "tuner", - 0, v4l2_i2c_tuner_addrs(ADDRS_RADIO)); + "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_RADIO)); if (has_demod) v4l2_i2c_new_subdev(&core->v4l2_dev, - &core->i2c_adap, NULL, "tuner", + &core->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); if (core->board.tuner_addr == ADDR_UNSET) { v4l2_i2c_new_subdev(&core->v4l2_dev, - &core->i2c_adap, NULL, "tuner", + &core->i2c_adap, "tuner", 0, has_demod ? tv_addrs + 4 : tv_addrs); } else { v4l2_i2c_new_subdev(&core->v4l2_dev, &core->i2c_adap, - NULL, "tuner", core->board.tuner_addr, NULL); + "tuner", core->board.tuner_addr, NULL); } } diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c index d2f159daa8b5..ab98c0e07f9f 100644 --- a/drivers/media/video/cx88/cx88-video.c +++ b/drivers/media/video/cx88/cx88-video.c @@ -1896,14 +1896,13 @@ static int __devinit cx8800_initdev(struct pci_dev *pci_dev, if (core->board.audio_chip == V4L2_IDENT_WM8775) v4l2_i2c_new_subdev(&core->v4l2_dev, &core->i2c_adap, - NULL, "wm8775", 0x36 >> 1, NULL); + "wm8775", 0x36 >> 1, NULL); if (core->board.audio_chip == V4L2_IDENT_TVAUDIO) { /* This probes for a tda9874 as is used on some Pixelview Ultra boards. */ - v4l2_i2c_new_subdev(&core->v4l2_dev, - &core->i2c_adap, - NULL, "tvaudio", 0, I2C_ADDRS(0xb0 >> 1)); + v4l2_i2c_new_subdev(&core->v4l2_dev, &core->i2c_adap, + "tvaudio", 0, I2C_ADDRS(0xb0 >> 1)); } switch (core->boardnr) { diff --git a/drivers/media/video/davinci/vpfe_capture.c b/drivers/media/video/davinci/vpfe_capture.c index d8e38cc4ec40..7333a9bb2549 100644 --- a/drivers/media/video/davinci/vpfe_capture.c +++ b/drivers/media/video/davinci/vpfe_capture.c @@ -1986,7 +1986,6 @@ static __init int vpfe_probe(struct platform_device *pdev) vpfe_dev->sd[i] = v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev, i2c_adap, - NULL, &sdinfo->board_info, NULL); if (vpfe_dev->sd[i]) { diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c index 6ac6acd16352..193abab6b355 100644 --- a/drivers/media/video/davinci/vpif_capture.c +++ b/drivers/media/video/davinci/vpif_capture.c @@ -2013,7 +2013,6 @@ static __init int vpif_probe(struct platform_device *pdev) vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, i2c_adap, - NULL, &subdevdata->board_info, NULL); diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c index 685f6a6ee603..412c65d54fe1 100644 --- a/drivers/media/video/davinci/vpif_display.c +++ b/drivers/media/video/davinci/vpif_display.c @@ -1553,7 +1553,7 @@ static __init int vpif_probe(struct platform_device *pdev) for (i = 0; i < subdev_count; i++) { vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, - i2c_adap, NULL, + i2c_adap, &subdevdata[i].board_info, NULL); if (!vpif_obj.sd[i]) { diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c index 54859233f311..f7e9168157a5 100644 --- a/drivers/media/video/em28xx/em28xx-cards.c +++ b/drivers/media/video/em28xx/em28xx-cards.c @@ -2554,39 +2554,39 @@ void em28xx_card_setup(struct em28xx *dev) /* request some modules */ if (dev->board.has_msp34xx) v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "msp3400", 0, msp3400_addrs); + "msp3400", 0, msp3400_addrs); if (dev->board.decoder == EM28XX_SAA711X) v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "saa7115_auto", 0, saa711x_addrs); + "saa7115_auto", 0, saa711x_addrs); if (dev->board.decoder == EM28XX_TVP5150) v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tvp5150", 0, tvp5150_addrs); + "tvp5150", 0, tvp5150_addrs); if (dev->em28xx_sensor == EM28XX_MT9V011) { struct v4l2_subdev *sd; sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "mt9v011", 0, mt9v011_addrs); + &dev->i2c_adap, "mt9v011", 0, mt9v011_addrs); v4l2_subdev_call(sd, core, s_config, 0, &dev->sensor_xtal); } if (dev->board.adecoder == EM28XX_TVAUDIO) v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tvaudio", dev->board.tvaudio_addr, NULL); + "tvaudio", dev->board.tvaudio_addr, NULL); if (dev->board.tuner_type != TUNER_ABSENT) { int has_demod = (dev->tda9887_conf & TDA9887_PRESENT); if (dev->board.radio.type) v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tuner", dev->board.radio_addr, NULL); + "tuner", dev->board.radio_addr, NULL); if (has_demod) v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "tuner", + &dev->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); if (dev->tuner_addr == 0) { enum v4l2_i2c_tuner_type type = @@ -2594,14 +2594,14 @@ void em28xx_card_setup(struct em28xx *dev) struct v4l2_subdev *sd; sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "tuner", + &dev->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(type)); if (sd) dev->tuner_addr = v4l2_i2c_subdev_addr(sd); } else { v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tuner", dev->tuner_addr, NULL); + "tuner", dev->tuner_addr, NULL); } } diff --git a/drivers/media/video/fsl-viu.c b/drivers/media/video/fsl-viu.c index 9a075d83dd1f..b8faff2dd711 100644 --- a/drivers/media/video/fsl-viu.c +++ b/drivers/media/video/fsl-viu.c @@ -1486,7 +1486,7 @@ static int __devinit viu_of_probe(struct platform_device *op, ad = i2c_get_adapter(0); viu_dev->decoder = v4l2_i2c_new_subdev(&viu_dev->v4l2_dev, ad, - NULL, "saa7113", VIU_VIDEO_DECODER_ADDR, NULL); + "saa7113", VIU_VIDEO_DECODER_ADDR, NULL); viu_dev->vidq.timeout.function = viu_vid_timeout; viu_dev->vidq.timeout.data = (unsigned long)viu_dev; diff --git a/drivers/media/video/ivtv/ivtv-i2c.c b/drivers/media/video/ivtv/ivtv-i2c.c index 9e8039ac909e..665191c9b407 100644 --- a/drivers/media/video/ivtv/ivtv-i2c.c +++ b/drivers/media/video/ivtv/ivtv-i2c.c @@ -239,19 +239,16 @@ int ivtv_i2c_register(struct ivtv *itv, unsigned idx) return -1; if (hw == IVTV_HW_TUNER) { /* special tuner handling */ - sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, - adap, NULL, type, - 0, itv->card_i2c->radio); + sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, adap, type, 0, + itv->card_i2c->radio); if (sd) sd->grp_id = 1 << idx; - sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, - adap, NULL, type, - 0, itv->card_i2c->demod); + sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, adap, type, 0, + itv->card_i2c->demod); if (sd) sd->grp_id = 1 << idx; - sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, - adap, NULL, type, - 0, itv->card_i2c->tv); + sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, adap, type, 0, + itv->card_i2c->tv); if (sd) sd->grp_id = 1 << idx; return sd ? 0 : -1; @@ -267,17 +264,16 @@ int ivtv_i2c_register(struct ivtv *itv, unsigned idx) /* It's an I2C device other than an analog tuner or IR chip */ if (hw == IVTV_HW_UPD64031A || hw == IVTV_HW_UPD6408X) { sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, - adap, NULL, type, 0, I2C_ADDRS(hw_addrs[idx])); + adap, type, 0, I2C_ADDRS(hw_addrs[idx])); } else if (hw == IVTV_HW_CX25840) { struct cx25840_platform_data pdata; pdata.pvr150_workaround = itv->pvr150_workaround; sd = v4l2_i2c_new_subdev_cfg(&itv->v4l2_dev, - adap, NULL, type, 0, &pdata, hw_addrs[idx], - NULL); + adap, type, 0, &pdata, hw_addrs[idx], NULL); } else { sd = v4l2_i2c_new_subdev(&itv->v4l2_dev, - adap, NULL, type, hw_addrs[idx], NULL); + adap, type, hw_addrs[idx], NULL); } if (sd) sd->grp_id = 1 << idx; diff --git a/drivers/media/video/mxb.c b/drivers/media/video/mxb.c index 94ba698d0ad4..4e8fd965f151 100644 --- a/drivers/media/video/mxb.c +++ b/drivers/media/video/mxb.c @@ -185,17 +185,17 @@ static int mxb_probe(struct saa7146_dev *dev) } mxb->saa7111a = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter, - NULL, "saa7111", I2C_SAA7111A, NULL); + "saa7111", I2C_SAA7111A, NULL); mxb->tea6420_1 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter, - NULL, "tea6420", I2C_TEA6420_1, NULL); + "tea6420", I2C_TEA6420_1, NULL); mxb->tea6420_2 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter, - NULL, "tea6420", I2C_TEA6420_2, NULL); + "tea6420", I2C_TEA6420_2, NULL); mxb->tea6415c = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter, - NULL, "tea6415c", I2C_TEA6415C, NULL); + "tea6415c", I2C_TEA6415C, NULL); mxb->tda9840 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter, - NULL, "tda9840", I2C_TDA9840, NULL); + "tda9840", I2C_TDA9840, NULL); mxb->tuner = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter, - NULL, "tuner", I2C_TUNER, NULL); + "tuner", I2C_TUNER, NULL); /* check if all devices are present */ if (!mxb->tea6420_1 || !mxb->tea6420_2 || !mxb->tea6415c || diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c index bef202752cc8..66ad516bdfd9 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c @@ -2088,16 +2088,14 @@ static int pvr2_hdw_load_subdev(struct pvr2_hdw *hdw, " Setting up with specified i2c address 0x%x", mid, i2caddr[0]); sd = v4l2_i2c_new_subdev(&hdw->v4l2_dev, &hdw->i2c_adap, - NULL, fname, - i2caddr[0], NULL); + fname, i2caddr[0], NULL); } else { pvr2_trace(PVR2_TRACE_INIT, "Module ID %u:" " Setting up with address probe list", mid); sd = v4l2_i2c_new_subdev(&hdw->v4l2_dev, &hdw->i2c_adap, - NULL, fname, - 0, i2caddr); + fname, 0, i2caddr); } if (!sd) { diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c index 26f7ad292aed..1b93207c89e8 100644 --- a/drivers/media/video/s5p-fimc/fimc-capture.c +++ b/drivers/media/video/s5p-fimc/fimc-capture.c @@ -44,7 +44,7 @@ static struct v4l2_subdev *fimc_subdev_register(struct fimc_dev *fimc, return ERR_PTR(-ENOMEM); sd = v4l2_i2c_new_subdev_board(&vid_cap->v4l2_dev, i2c_adap, - NULL, isp_info->board_info, NULL); + isp_info->board_info, NULL); if (!sd) { v4l2_err(&vid_cap->v4l2_dev, "failed to acquire subdev\n"); return NULL; diff --git a/drivers/media/video/saa7134/saa7134-cards.c b/drivers/media/video/saa7134/saa7134-cards.c index 0911cb580e18..1d4d0a49ea52 100644 --- a/drivers/media/video/saa7134/saa7134-cards.c +++ b/drivers/media/video/saa7134/saa7134-cards.c @@ -7551,22 +7551,22 @@ int saa7134_board_init2(struct saa7134_dev *dev) so we do not need to probe for a radio tuner device. */ if (dev->radio_type != UNSET) v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "tuner", + &dev->i2c_adap, "tuner", dev->radio_addr, NULL); if (has_demod) v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "tuner", + &dev->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); if (dev->tuner_addr == ADDR_UNSET) { enum v4l2_i2c_tuner_type type = has_demod ? ADDRS_TV_WITH_DEMOD : ADDRS_TV; v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "tuner", + &dev->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(type)); } else { v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "tuner", + &dev->i2c_adap, "tuner", dev->tuner_addr, NULL); } } diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c index 764d7d219fed..756a27812260 100644 --- a/drivers/media/video/saa7134/saa7134-core.c +++ b/drivers/media/video/saa7134/saa7134-core.c @@ -991,7 +991,7 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev, if (card_is_empress(dev)) { struct v4l2_subdev *sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "saa6752hs", + "saa6752hs", saa7134_boards[dev->board].empress_addr, NULL); if (sd) @@ -1002,7 +1002,7 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev, struct v4l2_subdev *sd; sd = v4l2_i2c_new_subdev(&dev->v4l2_dev, - &dev->i2c_adap, NULL, "saa6588", + &dev->i2c_adap, "saa6588", 0, I2C_ADDRS(saa7134_boards[dev->board].rds_addr)); if (sd) { printk(KERN_INFO "%s: found RDS decoder\n", dev->name); diff --git a/drivers/media/video/sh_vou.c b/drivers/media/video/sh_vou.c index 0f4906136b8f..4e5a8cf76ded 100644 --- a/drivers/media/video/sh_vou.c +++ b/drivers/media/video/sh_vou.c @@ -1406,7 +1406,7 @@ static int __devinit sh_vou_probe(struct platform_device *pdev) goto ereset; subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap, - NULL, vou_pdata->board_info, NULL); + vou_pdata->board_info, NULL); if (!subdev) { ret = -ENOMEM; goto ei2cnd; diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c index 43848a751d11..335120c2021b 100644 --- a/drivers/media/video/soc_camera.c +++ b/drivers/media/video/soc_camera.c @@ -896,7 +896,7 @@ static int soc_camera_init_i2c(struct soc_camera_device *icd, icl->board_info->platform_data = icd; subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, - NULL, icl->board_info, NULL); + icl->board_info, NULL); if (!subdev) goto ei2cnd; diff --git a/drivers/media/video/usbvision/usbvision-i2c.c b/drivers/media/video/usbvision/usbvision-i2c.c index e3bbae26e3ce..81dd53bb5267 100644 --- a/drivers/media/video/usbvision/usbvision-i2c.c +++ b/drivers/media/video/usbvision/usbvision-i2c.c @@ -251,7 +251,7 @@ int usbvision_i2c_register(struct usb_usbvision *usbvision) hit-and-miss. */ mdelay(10); v4l2_i2c_new_subdev(&usbvision->v4l2_dev, - &usbvision->i2c_adap, NULL, + &usbvision->i2c_adap, "saa7115_auto", 0, saa711x_addrs); break; } @@ -261,14 +261,14 @@ int usbvision_i2c_register(struct usb_usbvision *usbvision) struct tuner_setup tun_setup; sd = v4l2_i2c_new_subdev(&usbvision->v4l2_dev, - &usbvision->i2c_adap, NULL, + &usbvision->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); /* depending on whether we found a demod or not, select the tuner type. */ type = sd ? ADDRS_TV_WITH_DEMOD : ADDRS_TV; sd = v4l2_i2c_new_subdev(&usbvision->v4l2_dev, - &usbvision->i2c_adap, NULL, + &usbvision->i2c_adap, "tuner", 0, v4l2_i2c_tuner_addrs(type)); if (sd == NULL) diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c index 9294282b5add..b5eb1f3950b1 100644 --- a/drivers/media/video/v4l2-common.c +++ b/drivers/media/video/v4l2-common.c @@ -368,18 +368,15 @@ EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_init); /* Load an i2c sub-device. */ struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, - struct i2c_adapter *adapter, const char *module_name, - struct i2c_board_info *info, const unsigned short *probe_addrs) + struct i2c_adapter *adapter, struct i2c_board_info *info, + const unsigned short *probe_addrs) { struct v4l2_subdev *sd = NULL; struct i2c_client *client; BUG_ON(!v4l2_dev); - if (module_name) - request_module(module_name); - else - request_module(I2C_MODULE_PREFIX "%s", info->type); + request_module(I2C_MODULE_PREFIX "%s", info->type); /* Create the i2c client */ if (info->addr == 0 && probe_addrs) @@ -432,8 +429,7 @@ error: EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev_board); struct v4l2_subdev *v4l2_i2c_new_subdev_cfg(struct v4l2_device *v4l2_dev, - struct i2c_adapter *adapter, - const char *module_name, const char *client_type, + struct i2c_adapter *adapter, const char *client_type, int irq, void *platform_data, u8 addr, const unsigned short *probe_addrs) { @@ -447,8 +443,7 @@ struct v4l2_subdev *v4l2_i2c_new_subdev_cfg(struct v4l2_device *v4l2_dev, info.irq = irq; info.platform_data = platform_data; - return v4l2_i2c_new_subdev_board(v4l2_dev, adapter, module_name, - &info, probe_addrs); + return v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, probe_addrs); } EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev_cfg); diff --git a/drivers/media/video/via-camera.c b/drivers/media/video/via-camera.c index 01bcdb44b5c6..9eda7cc03121 100644 --- a/drivers/media/video/via-camera.c +++ b/drivers/media/video/via-camera.c @@ -1360,7 +1360,7 @@ static __devinit int viacam_probe(struct platform_device *pdev) */ sensor_adapter = viafb_find_i2c_adapter(VIA_PORT_31); cam->sensor = v4l2_i2c_new_subdev(&cam->v4l2_dev, sensor_adapter, - NULL, "ov7670", 0x42 >> 1, NULL); + "ov7670", 0x42 >> 1, NULL); if (cam->sensor == NULL) { dev_err(&pdev->dev, "Unable to find the sensor!\n"); ret = -ENODEV; diff --git a/drivers/media/video/vino.c b/drivers/media/video/vino.c index e5e005dc1554..7e7eec48f8b1 100644 --- a/drivers/media/video/vino.c +++ b/drivers/media/video/vino.c @@ -4334,10 +4334,10 @@ static int __init vino_module_init(void) vino_drvdata->decoder = v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter, - NULL, "saa7191", 0, I2C_ADDRS(0x45)); + "saa7191", 0, I2C_ADDRS(0x45)); vino_drvdata->camera = v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter, - NULL, "indycam", 0, I2C_ADDRS(0x2b)); + "indycam", 0, I2C_ADDRS(0x2b)); dprintk("init complete!\n"); diff --git a/drivers/media/video/zoran/zoran_card.c b/drivers/media/video/zoran/zoran_card.c index 7e6d62467eaa..e520abf9f4c3 100644 --- a/drivers/media/video/zoran/zoran_card.c +++ b/drivers/media/video/zoran/zoran_card.c @@ -1343,13 +1343,12 @@ static int __devinit zoran_probe(struct pci_dev *pdev, } zr->decoder = v4l2_i2c_new_subdev(&zr->v4l2_dev, - &zr->i2c_adapter, NULL, zr->card.i2c_decoder, + &zr->i2c_adapter, zr->card.i2c_decoder, 0, zr->card.addrs_decoder); if (zr->card.i2c_encoder) zr->encoder = v4l2_i2c_new_subdev(&zr->v4l2_dev, - &zr->i2c_adapter, - NULL, zr->card.i2c_encoder, + &zr->i2c_adapter, zr->card.i2c_encoder, 0, zr->card.addrs_encoder); dprintk(2, diff --git a/drivers/staging/go7007/go7007-driver.c b/drivers/staging/go7007/go7007-driver.c index b3f42f37a313..48d4e483d8a4 100644 --- a/drivers/staging/go7007/go7007-driver.c +++ b/drivers/staging/go7007/go7007-driver.c @@ -199,7 +199,7 @@ static int init_i2c_module(struct i2c_adapter *adapter, const char *type, struct go7007 *go = i2c_get_adapdata(adapter); struct v4l2_device *v4l2_dev = &go->v4l2_dev; - if (v4l2_i2c_new_subdev(v4l2_dev, adapter, NULL, type, addr, NULL)) + if (v4l2_i2c_new_subdev(v4l2_dev, adapter, type, addr, NULL)) return 0; printk(KERN_INFO "go7007: probing for module i2c:%s failed\n", type); diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c index 664e6038090d..b143258f094a 100644 --- a/drivers/staging/tm6000/tm6000-cards.c +++ b/drivers/staging/tm6000/tm6000-cards.c @@ -545,7 +545,7 @@ static void tm6000_config_tuner(struct tm6000_core *dev) /* Load tuner module */ v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tuner", dev->tuner_addr, NULL); + "tuner", dev->tuner_addr, NULL); memset(&tun_setup, 0, sizeof(tun_setup)); tun_setup.type = dev->tuner_type; @@ -683,7 +683,7 @@ static int tm6000_init_dev(struct tm6000_core *dev) if (dev->caps.has_tda9874) v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap, - NULL, "tvaudio", I2C_ADDR_TDA9874, NULL); + "tvaudio", I2C_ADDR_TDA9874, NULL); /* register and initialize V4L2 */ rc = tm6000_v4l2_register(dev); diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 41dd480e45f1..239125af3ea3 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -137,31 +137,27 @@ struct v4l2_subdev_ops; /* Load an i2c module and return an initialized v4l2_subdev struct. - Only call request_module if module_name != NULL. The client_type argument is the name of the chip that's on the adapter. */ struct v4l2_subdev *v4l2_i2c_new_subdev_cfg(struct v4l2_device *v4l2_dev, - struct i2c_adapter *adapter, - const char *module_name, const char *client_type, + struct i2c_adapter *adapter, const char *client_type, int irq, void *platform_data, u8 addr, const unsigned short *probe_addrs); /* Load an i2c module and return an initialized v4l2_subdev struct. - Only call request_module if module_name != NULL. The client_type argument is the name of the chip that's on the adapter. */ static inline struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, - struct i2c_adapter *adapter, - const char *module_name, const char *client_type, + struct i2c_adapter *adapter, const char *client_type, u8 addr, const unsigned short *probe_addrs) { - return v4l2_i2c_new_subdev_cfg(v4l2_dev, adapter, module_name, - client_type, 0, NULL, addr, probe_addrs); + return v4l2_i2c_new_subdev_cfg(v4l2_dev, adapter, client_type, 0, NULL, + addr, probe_addrs); } struct i2c_board_info; struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, - struct i2c_adapter *adapter, const char *module_name, - struct i2c_board_info *info, const unsigned short *probe_addrs); + struct i2c_adapter *adapter, struct i2c_board_info *info, + const unsigned short *probe_addrs); /* Initialize an v4l2_subdev with data from an i2c_client struct */ void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, -- cgit v1.2.3 From 90600732d8b2fbc422bc9c57bdc73513d909367f Mon Sep 17 00:00:00 2001 From: David Daney Date: Fri, 19 Nov 2010 11:58:53 +0000 Subject: phylib: Add support for Marvell 88E1149R devices. The 88E1149R is 10/100/1000 quad-gigabit Ethernet PHY. The .config_aneg function can be shared with 88E1118, but it needs its own .config_init. Signed-off-by: David Daney Cc: Cyril Chemparathy Cc: Arnaud Patard Cc: Benjamin Herrenschmidt Cc: Wolfram Sang Signed-off-by: David S. Miller --- drivers/net/phy/marvell.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/linux/marvell_phy.h | 1 + 2 files changed, 41 insertions(+) (limited to 'include') diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 3600b8b21bf2..def19d7c53ef 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -433,6 +433,32 @@ static int m88e1118_config_init(struct phy_device *phydev) return 0; } +static int m88e1149_config_init(struct phy_device *phydev) +{ + int err; + + /* Change address */ + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0002); + if (err < 0) + return err; + + /* Enable 1000 Mbit */ + err = phy_write(phydev, 0x15, 0x1048); + if (err < 0) + return err; + + /* Reset address */ + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0); + if (err < 0) + return err; + + err = phy_write(phydev, MII_BMCR, BMCR_RESET); + if (err < 0) + return err; + + return 0; +} + static int m88e1145_config_init(struct phy_device *phydev) { int err; @@ -685,6 +711,19 @@ static struct phy_driver marvell_drivers[] = { .config_intr = &marvell_config_intr, .driver = { .owner = THIS_MODULE }, }, + { + .phy_id = MARVELL_PHY_ID_88E1149R, + .phy_id_mask = MARVELL_PHY_ID_MASK, + .name = "Marvell 88E1149R", + .features = PHY_GBIT_FEATURES, + .flags = PHY_HAS_INTERRUPT, + .config_init = &m88e1149_config_init, + .config_aneg = &m88e1118_config_aneg, + .read_status = &genphy_read_status, + .ack_interrupt = &marvell_ack_interrupt, + .config_intr = &marvell_config_intr, + .driver = { .owner = THIS_MODULE }, + }, { .phy_id = MARVELL_PHY_ID_88E1240, .phy_id_mask = MARVELL_PHY_ID_MASK, @@ -736,6 +775,7 @@ static struct mdio_device_id __maybe_unused marvell_tbl[] = { { 0x01410e10, 0xfffffff0 }, { 0x01410cb0, 0xfffffff0 }, { 0x01410cd0, 0xfffffff0 }, + { 0x01410e50, 0xfffffff0 }, { 0x01410e30, 0xfffffff0 }, { 0x01410e90, 0xfffffff0 }, { } diff --git a/include/linux/marvell_phy.h b/include/linux/marvell_phy.h index 1ff81b51b656..dd3c34ebca9a 100644 --- a/include/linux/marvell_phy.h +++ b/include/linux/marvell_phy.h @@ -11,6 +11,7 @@ #define MARVELL_PHY_ID_88E1118 0x01410e10 #define MARVELL_PHY_ID_88E1121R 0x01410cb0 #define MARVELL_PHY_ID_88E1145 0x01410cd0 +#define MARVELL_PHY_ID_88E1149R 0x01410e50 #define MARVELL_PHY_ID_88E1240 0x01410e30 #define MARVELL_PHY_ID_88E1318S 0x01410e90 -- cgit v1.2.3 From 0b26a0bf6ff398185546432420bb772bcfdf8d94 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 20 Nov 2010 14:26:44 -0500 Subject: NFS: Ensure we return the dirent->d_type when it is known Store the dirent->d_type in the struct nfs_cache_array_entry so that we can use it in getdents() calls. This fixes a regression with the new readdir code. Signed-off-by: Trond Myklebust --- fs/nfs/dir.c | 7 ++++--- fs/nfs/internal.h | 9 +++++++++ fs/nfs/nfs2xdr.c | 2 ++ fs/nfs/nfs3xdr.c | 2 ++ fs/nfs/nfs4xdr.c | 4 ++++ include/linux/nfs_xdr.h | 1 + 6 files changed, 22 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index ced7291cc5f8..8ea4a4180a87 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -162,6 +162,7 @@ struct nfs_cache_array_entry { u64 cookie; u64 ino; struct qstr string; + unsigned char d_type; }; struct nfs_cache_array { @@ -265,6 +266,7 @@ int nfs_readdir_add_to_array(struct nfs_entry *entry, struct page *page) cache_entry->cookie = entry->prev_cookie; cache_entry->ino = entry->ino; + cache_entry->d_type = entry->d_type; ret = nfs_readdir_make_qstr(&cache_entry->string, entry->name, entry->len); if (ret) goto out; @@ -701,7 +703,6 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent, int i = 0; int res = 0; struct nfs_cache_array *array = NULL; - unsigned int d_type = DT_UNKNOWN; array = nfs_readdir_get_array(desc->page); if (IS_ERR(array)) { @@ -711,11 +712,11 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent, for (i = desc->cache_entry_index; i < array->size; i++) { struct nfs_cache_array_entry *ent; - d_type = DT_UNKNOWN; ent = &array->array[i]; if (filldir(dirent, ent->string.name, ent->string.len, - file->f_pos, nfs_compat_user_ino64(ent->ino), d_type) < 0) { + file->f_pos, nfs_compat_user_ino64(ent->ino), + ent->d_type) < 0) { desc->eof = 1; break; } diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index db08ff3ff454..e6356b750b77 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -361,6 +361,15 @@ unsigned int nfs_page_length(struct page *page) return 0; } +/* + * Convert a umode to a dirent->d_type + */ +static inline +unsigned char nfs_umode_to_dtype(umode_t mode) +{ + return (mode >> 12) & 15; +} + /* * Determine the number of pages in an array of length 'len' and * with a base offset of 'base' diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index ab5937734f0b..5914a1911c95 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -485,6 +485,8 @@ nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_se entry->prev_cookie = entry->cookie; entry->cookie = ntohl(*p++); + entry->d_type = DT_UNKNOWN; + p = xdr_inline_peek(xdr, 8); if (p != NULL) entry->eof = !p[0] && p[1]; diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index e79e4f5f5d53..f6cc60f06dac 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -622,11 +622,13 @@ nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_s entry->prev_cookie = entry->cookie; p = xdr_decode_hyper(p, &entry->cookie); + entry->d_type = DT_UNKNOWN; if (plus) { entry->fattr->valid = 0; p = xdr_decode_post_op_attr_stream(xdr, entry->fattr); if (IS_ERR(p)) goto out_overflow_exit; + entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); /* In fact, a post_op_fh3: */ p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index a3b39cbc90f9..9f1826b012e6 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -6208,6 +6208,10 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) entry->ino = entry->fattr->fileid; + entry->d_type = DT_UNKNOWN; + if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) + entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); + if (verify_attr_len(xdr, p, len) < 0) goto out_overflow; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ba6cc8f223c9..80f07198a31a 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -483,6 +483,7 @@ struct nfs_entry { int eof; struct nfs_fh * fh; struct nfs_fattr * fattr; + unsigned char d_type; }; /* -- cgit v1.2.3 From 1d8638d4038eb8709edc80e37a0bbb77253d86e9 Mon Sep 17 00:00:00 2001 From: Daniel Klaffenbach Date: Fri, 19 Nov 2010 21:25:21 -0600 Subject: ssb: b43-pci-bridge: Add new vendor for BCM4318 Add new vendor for Broadcom 4318. Signed-off-by: Daniel Klaffenbach Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- drivers/ssb/b43_pci_bridge.c | 1 + include/linux/pci_ids.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include') diff --git a/drivers/ssb/b43_pci_bridge.c b/drivers/ssb/b43_pci_bridge.c index ef9c6a04ad8f..744d3f6e4709 100644 --- a/drivers/ssb/b43_pci_bridge.c +++ b/drivers/ssb/b43_pci_bridge.c @@ -24,6 +24,7 @@ static const struct pci_device_id b43_pci_bridge_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4312) }, { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4315) }, { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4318) }, + { PCI_DEVICE(PCI_VENDOR_ID_BCM_GVC, 0x4318) }, { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4319) }, { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4320) }, { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4321) }, diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index d278dd9cb765..f29c25ede70d 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2043,6 +2043,7 @@ #define PCI_DEVICE_ID_AFAVLAB_P030 0x2182 #define PCI_SUBDEVICE_ID_AFAVLAB_P061 0x2150 +#define PCI_VENDOR_ID_BCM_GVC 0x14a4 #define PCI_VENDOR_ID_BROADCOM 0x14e4 #define PCI_DEVICE_ID_TIGON3_5752 0x1600 #define PCI_DEVICE_ID_TIGON3_5752M 0x1601 -- cgit v1.2.3 From dfd62d1d84d83f9421792c78bcf72de9bc2bb603 Mon Sep 17 00:00:00 2001 From: Anders Kaseorg Date: Wed, 24 Nov 2010 15:21:10 -0600 Subject: module: Update prototype for ref_module (formerly use_module) Commit 9bea7f23952d5948f8e5dfdff4de09bb9981fb5f renamed use_module to ref_module (and changed its return value), but forgot to update this prototype in module.h. Signed-off-by: Anders Kaseorg Acked-by: WANG Cong Signed-off-by: Rusty Russell --- include/linux/module.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/module.h b/include/linux/module.h index b29e7458b966..7575bbbdf2a2 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -517,7 +517,7 @@ static inline void __module_get(struct module *module) #define symbol_put_addr(p) do { } while(0) #endif /* CONFIG_MODULE_UNLOAD */ -int use_module(struct module *a, struct module *b); +int ref_module(struct module *a, struct module *b); /* This is a #define so the string doesn't get put in every .o file */ #define module_name(mod) \ -- cgit v1.2.3 From d4bc99b977e3a1dd10a84a01ebe59ac2ccebf0cd Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Wed, 24 Nov 2010 02:44:06 +0000 Subject: ARM: mach-shmobile: ap4evb: FSI clock use proper process for HDMI Current AP4 FSI set_rate function used bogus clock process which didn't care enable/disable and clk->usecound. To solve this issue, this patch also modify FSI driver to call set_rate with enough options. This patch modify it. Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- arch/arm/mach-shmobile/board-ap4evb.c | 58 +++++++++++++++++++++++++++-------- arch/arm/mach-shmobile/clock-sh7372.c | 2 +- include/sound/sh_fsi.h | 6 ++-- sound/soc/sh/fsi.c | 19 ++++++++++-- 4 files changed, 67 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c index d3260542b943..61c1068198ec 100644 --- a/arch/arm/mach-shmobile/board-ap4evb.c +++ b/arch/arm/mach-shmobile/board-ap4evb.c @@ -567,40 +567,72 @@ static struct platform_device *qhd_devices[] __initdata = { /* FSI */ #define IRQ_FSI evt2irq(0x1840) +static int __fsi_set_rate(struct clk *clk, long rate, int enable) +{ + int ret = 0; + + if (rate <= 0) + return ret; -static int fsi_set_rate(int is_porta, int rate) + if (enable) { + ret = clk_set_rate(clk, clk_round_rate(clk, rate)); + if (0 == ret) + ret = clk_enable(clk); + } else { + clk_disable(clk); + } + + return ret; +} + +static int fsi_set_rate(struct device *dev, int is_porta, int rate, int enable) { struct clk *fsib_clk; struct clk *fdiv_clk = &sh7372_fsidivb_clk; + long fsib_rate = 0; + long fdiv_rate = 0; + int ackmd_bpfmd; int ret; /* set_rate is not needed if port A */ if (is_porta) return 0; - fsib_clk = clk_get(NULL, "fsib_clk"); - if (IS_ERR(fsib_clk)) - return -EINVAL; - switch (rate) { case 44100: - clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 11283000)); - ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64; + fsib_rate = rate * 256; + ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64; break; case 48000: - clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 85428000)); - clk_set_rate(fdiv_clk, clk_round_rate(fdiv_clk, 12204000)); - ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64; + fsib_rate = 85428000; /* around 48kHz x 256 x 7 */ + fdiv_rate = rate * 256; + ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64; break; default: pr_err("unsupported rate in FSI2 port B\n"); - ret = -EINVAL; - break; + return -EINVAL; } + /* FSI B setting */ + fsib_clk = clk_get(dev, "ickb"); + if (IS_ERR(fsib_clk)) + return -EIO; + + ret = __fsi_set_rate(fsib_clk, fsib_rate, enable); clk_put(fsib_clk); + if (ret < 0) + return ret; - return ret; + /* FSI DIV setting */ + ret = __fsi_set_rate(fdiv_clk, fdiv_rate, enable); + if (ret < 0) { + /* disable FSI B */ + if (enable) + __fsi_set_rate(fsib_clk, fsib_rate, 0); + return ret; + } + + return ackmd_bpfmd; } static struct sh_fsi_platform_info fsi_info = { diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c index 13226323e4e0..4191e2921127 100644 --- a/arch/arm/mach-shmobile/clock-sh7372.c +++ b/arch/arm/mach-shmobile/clock-sh7372.c @@ -471,7 +471,7 @@ static int fsidiv_set_rate(struct clk *clk, return -ENOENT; __raw_writel(idx << 16, clk->mapping->base); - return fsidiv_enable(clk); + return 0; } static struct clk_ops fsidiv_clk_ops = { diff --git a/include/sound/sh_fsi.h b/include/sound/sh_fsi.h index fa60cbda90a4..d79894192ae3 100644 --- a/include/sound/sh_fsi.h +++ b/include/sound/sh_fsi.h @@ -85,7 +85,9 @@ * ACK_MD (FSI2) * CKG1 (FSI) * - * err: return value < 0 + * err : return value < 0 + * no change : return value == 0 + * change xMD : return value > 0 * * 0x-00000AB * @@ -111,7 +113,7 @@ struct sh_fsi_platform_info { unsigned long porta_flags; unsigned long portb_flags; - int (*set_rate)(int is_porta, int rate); /* for master mode */ + int (*set_rate)(struct device *dev, int is_porta, int rate, int enable); }; #endif /* __SOUND_FSI_H */ diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c index 507e709f2807..136414f163e9 100644 --- a/sound/soc/sh/fsi.c +++ b/sound/soc/sh/fsi.c @@ -132,6 +132,8 @@ struct fsi_priv { struct fsi_stream playback; struct fsi_stream capture; + long rate; + u32 mst_ctrl; }; @@ -854,10 +856,17 @@ static void fsi_dai_shutdown(struct snd_pcm_substream *substream, { struct fsi_priv *fsi = fsi_get_priv(substream); int is_play = fsi_is_play(substream); + struct fsi_master *master = fsi_get_master(fsi); + int (*set_rate)(struct device *dev, int is_porta, int rate, int enable); fsi_irq_disable(fsi, is_play); fsi_clk_ctrl(fsi, 0); + set_rate = master->info->set_rate; + if (set_rate && fsi->rate) + set_rate(dai->dev, fsi_is_port_a(fsi), fsi->rate, 0); + fsi->rate = 0; + pm_runtime_put_sync(dai->dev); } @@ -891,9 +900,10 @@ static int fsi_dai_hw_params(struct snd_pcm_substream *substream, { struct fsi_priv *fsi = fsi_get_priv(substream); struct fsi_master *master = fsi_get_master(fsi); - int (*set_rate)(int is_porta, int rate) = master->info->set_rate; + int (*set_rate)(struct device *dev, int is_porta, int rate, int enable); int fsi_ver = master->core->ver; int is_play = fsi_is_play(substream); + long rate = params_rate(params); int ret; /* if slave mode, set_rate is not needed */ @@ -901,10 +911,15 @@ static int fsi_dai_hw_params(struct snd_pcm_substream *substream, return 0; /* it is error if no set_rate */ + set_rate = master->info->set_rate; if (!set_rate) return -EIO; - ret = set_rate(fsi_is_port_a(fsi), params_rate(params)); + ret = set_rate(dai->dev, fsi_is_port_a(fsi), rate, 1); + if (ret < 0) /* error */ + return ret; + + fsi->rate = rate; if (ret > 0) { u32 data = 0; -- cgit v1.2.3 From 3a3a1af37f0405d15c0b64a6ce7f4878084442e0 Mon Sep 17 00:00:00 2001 From: Loïc Minier Date: Wed, 24 Nov 2010 12:56:53 -0800 Subject: include/linux/fs.h: fix userspace build MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit dpkg uses fiemap but didn't particularly need to include stdint.h so far. Since 367a51a33902 ("fs: Add FITRIM ioctl"), build of linux/fs.h failed in dpkg with: In file included from ../../src/filesdb.c:27:0: /usr/include/linux/fs.h:37:2: error: expected specifier-qualifier-list before 'uint64_t' Use exportable type __u64 to avoid the dependency on stdint.h. b31d42a5af18 ("Fix compile brekage with !CONFIG_BLOCK") fixed only the kernel build by including linux/types.h, but this also fixed "make headers_check", so don't revert it. Signed-off-by: Loïc Minier Tested-by: Arnd Bergmann Cc: Lukas Czerner Cc: Dmitry Monakhov Cc: Theodore Ts'o Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/fs.h b/include/linux/fs.h index eedc00b7b1ee..c9e06cc70dad 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -34,9 +34,9 @@ #define SEEK_MAX SEEK_END struct fstrim_range { - uint64_t start; - uint64_t len; - uint64_t minlen; + __u64 start; + __u64 len; + __u64 minlen; }; /* And dynamically-tunable limits and defaults: */ -- cgit v1.2.3 From 112bc2e120a94a511858918d6866a4978f9c500e Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 24 Nov 2010 12:56:58 -0800 Subject: memcg: fix false positive VM_BUG on non-SMP Fix this: kernel BUG at mm/memcontrol.c:2155! invalid opcode: 0000 [#1] last sysfs file: Pid: 18, comm: sh Not tainted 2.6.37-rc3 #3 /Bochs EIP: 0060:[] EFLAGS: 00000246 CPU: 0 EIP is at mem_cgroup_move_account+0xe2/0xf0 EAX: 00000004 EBX: c6f931d4 ECX: c681c300 EDX: c681c000 ESI: c681c300 EDI: ffffffea EBP: c681c000 ESP: c46f3e30 DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 Process sh (pid: 18, ti=c46f2000 task=c6826e60 task.ti=c46f2000) Stack: 00000155 c681c000 0805f000 c46ee180 c46f3e5c c7058820 c1074d37 00000000 08060000 c46db9a0 c46ec080 c7058820 0805f000 08060000 c46f3e98 c1074c50 c106c75e c46f3e98 c46ec080 08060000 0805ffff c46db9a0 c46f3e98 c46e0340 Call Trace: [] ? mem_cgroup_move_charge_pte_range+0xe7/0x130 [] ? mem_cgroup_move_charge_pte_range+0x0/0x130 [] ? walk_page_range+0xee/0x1d0 [] ? mem_cgroup_move_task+0x66/0x90 [] ? mem_cgroup_move_charge_pte_range+0x0/0x130 [] ? mem_cgroup_move_task+0x0/0x90 [] ? cgroup_attach_task+0x136/0x200 [] ? cgroup_tasks_write+0x48/0xc0 [] ? cgroup_file_write+0xde/0x220 [] ? do_page_fault+0x17d/0x3f0 [] ? alloc_fd+0x2d/0xd0 [] ? cgroup_file_write+0x0/0x220 [] ? vfs_write+0x92/0xc0 [] ? sys_write+0x41/0x70 [] ? syscall_call+0x7/0xb Code: 03 00 74 09 8b 44 24 04 e8 1c f1 ff ff 89 73 04 8d 86 b0 00 00 00 b9 01 00 00 00 89 da 31 ff e8 65 f5 ff ff e9 4d ff ff ff 0f 0b <0f> 0b 0f 0b 0f 0b 90 8d b4 26 00 00 00 00 83 ec 10 8b 0d f4 e3 EIP: [] mem_cgroup_move_account+0xe2/0xf0 SS:ESP 0068:c46f3e30 ---[ end trace 7daa1582159b6532 ]--- lock_page_cgroup and unlock_page_cgroup are implemented using bit_spinlock. bit_spinlock doesn't touch the bit if we are on non-SMP machine, so we can't use the bit to check whether the lock was taken. Let's introduce is_page_cgroup_locked based on bit_spin_is_locked instead of PageCgroupLocked to fix it. [akpm@linux-foundation.org: s/is_page_cgroup_locked/page_is_cgroup_locked/] Signed-off-by: Kirill A. Shutemov Reviewed-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 7 +++++-- mm/memcontrol.c | 2 +- 2 files changed, 6 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 5bb13b3db84d..b02195dfc1b0 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -59,8 +59,6 @@ static inline void ClearPageCgroup##uname(struct page_cgroup *pc) \ static inline int TestClearPageCgroup##uname(struct page_cgroup *pc) \ { return test_and_clear_bit(PCG_##lname, &pc->flags); } -TESTPCGFLAG(Locked, LOCK) - /* Cache flag is set only once (at allocation) */ TESTPCGFLAG(Cache, CACHE) CLEARPCGFLAG(Cache, CACHE) @@ -104,6 +102,11 @@ static inline void unlock_page_cgroup(struct page_cgroup *pc) bit_spin_unlock(PCG_LOCK, &pc->flags); } +static inline int page_is_cgroup_locked(struct page_cgroup *pc) +{ + return bit_spin_is_locked(PCG_LOCK, &pc->flags); +} + #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct page_cgroup; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2efa8ea07ff7..62d1880f6992 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2152,7 +2152,7 @@ static void __mem_cgroup_move_account(struct page_cgroup *pc, { VM_BUG_ON(from == to); VM_BUG_ON(PageLRU(pc->page)); - VM_BUG_ON(!PageCgroupLocked(pc)); + VM_BUG_ON(!page_is_cgroup_locked(pc)); VM_BUG_ON(!PageCgroupUsed(pc)); VM_BUG_ON(pc->mem_cgroup != from); -- cgit v1.2.3 From 4917b284db8607e414c334317b7d15239854d39c Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 22 Nov 2010 12:48:34 -0800 Subject: dmar, x86: Use function stubs when CONFIG_INTR_REMAP is disabled The stubs for CONFIG_INTR_REMAP disabled need to be functions instead of values to eliminate build warnings. arch/x86/kernel/apic/apic.c: In function 'lapic_suspend': arch/x86/kernel/apic/apic.c:2060:3: warning: statement with no effect arch/x86/kernel/apic/apic.c: In function 'lapic_resume': arch/x86/kernel/apic/apic.c:2137:3: warning: statement with no effect Reported-and-Tested-by: Fabio Comolli Signed-off-by: Randy Dunlap Cc: Suresh Siddha Cc: Yinghai Lu Cc: David Woodhouse Cc: Jesse Barnes LKML-Reference: <20101122124834.74429004.randy.dunlap@oracle.com> Signed-off-by: Ingo Molnar --- include/linux/dmar.h | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/dmar.h b/include/linux/dmar.h index a7d9dc21391d..7b776d71d36d 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -175,10 +175,21 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev) return 0; } -#define enable_intr_remapping(mode) (-1) -#define disable_intr_remapping() (0) -#define reenable_intr_remapping(mode) (0) #define intr_remapping_enabled (0) + +static inline int enable_intr_remapping(int eim) +{ + return -1; +} + +static inline void disable_intr_remapping(void) +{ +} + +static inline int reenable_intr_remapping(int eim) +{ + return 0; +} #endif /* Can't use the common MSI interrupt functions -- cgit v1.2.3 From dddd3379a619a4cb8247bfd3c94ca9ae3797aa2e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 24 Nov 2010 10:05:55 +0100 Subject: perf: Fix inherit vs. context rotation bug It was found that sometimes children of tasks with inherited events had one extra event. Eventually it turned out to be due to the list rotation no being exclusive with the list iteration in the inheritance code. Cure this by temporarily disabling the rotation while we inherit the events. Signed-off-by: Thomas Gleixner Signed-off-by: Peter Zijlstra LKML-Reference: Cc: Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 1 + kernel/perf_event.c | 22 ++++++++++++++++++++-- 2 files changed, 21 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 40150f345982..142e3d6042c7 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -850,6 +850,7 @@ struct perf_event_context { int nr_active; int is_active; int nr_stat; + int rotate_disable; atomic_t refcount; struct task_struct *task; diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 671f6c8c8a32..f365dd8ef8b0 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -1622,8 +1622,12 @@ static void rotate_ctx(struct perf_event_context *ctx) { raw_spin_lock(&ctx->lock); - /* Rotate the first entry last of non-pinned groups */ - list_rotate_left(&ctx->flexible_groups); + /* + * Rotate the first entry last of non-pinned groups. Rotation might be + * disabled by the inheritance code. + */ + if (!ctx->rotate_disable) + list_rotate_left(&ctx->flexible_groups); raw_spin_unlock(&ctx->lock); } @@ -6162,6 +6166,7 @@ int perf_event_init_context(struct task_struct *child, int ctxn) struct perf_event *event; struct task_struct *parent = current; int inherited_all = 1; + unsigned long flags; int ret = 0; child->perf_event_ctxp[ctxn] = NULL; @@ -6202,6 +6207,15 @@ int perf_event_init_context(struct task_struct *child, int ctxn) break; } + /* + * We can't hold ctx->lock when iterating the ->flexible_group list due + * to allocations, but we need to prevent rotation because + * rotate_ctx() will change the list from interrupt context. + */ + raw_spin_lock_irqsave(&parent_ctx->lock, flags); + parent_ctx->rotate_disable = 1; + raw_spin_unlock_irqrestore(&parent_ctx->lock, flags); + list_for_each_entry(event, &parent_ctx->flexible_groups, group_entry) { ret = inherit_task_group(event, parent, parent_ctx, child, ctxn, &inherited_all); @@ -6209,6 +6223,10 @@ int perf_event_init_context(struct task_struct *child, int ctxn) break; } + raw_spin_lock_irqsave(&parent_ctx->lock, flags); + parent_ctx->rotate_disable = 0; + raw_spin_unlock_irqrestore(&parent_ctx->lock, flags); + child_ctx = child->perf_event_ctxp[ctxn]; if (child_ctx && inherited_all) { -- cgit v1.2.3 From ee6dcfa40a50fe12a3ae0fb4d2653c66c3ed6556 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 26 Nov 2010 13:49:04 +0100 Subject: perf: Fix the software context switch counter Stephane noticed that because the perf_sw_event() call is inside the perf_event_task_sched_out() call it won't get called unless we have a per-task counter. Reported-by: Stephane Eranian Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 29 +++++++++++++++-------------- kernel/perf_event.c | 2 -- 2 files changed, 15 insertions(+), 16 deletions(-) (limited to 'include') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 142e3d6042c7..de2c41758e29 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -909,20 +909,6 @@ extern int perf_num_counters(void); extern const char *perf_pmu_name(void); extern void __perf_event_task_sched_in(struct task_struct *task); extern void __perf_event_task_sched_out(struct task_struct *task, struct task_struct *next); - -extern atomic_t perf_task_events; - -static inline void perf_event_task_sched_in(struct task_struct *task) -{ - COND_STMT(&perf_task_events, __perf_event_task_sched_in(task)); -} - -static inline -void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next) -{ - COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next)); -} - extern int perf_event_init_task(struct task_struct *child); extern void perf_event_exit_task(struct task_struct *child); extern void perf_event_free_task(struct task_struct *task); @@ -1031,6 +1017,21 @@ have_event: __perf_sw_event(event_id, nr, nmi, regs, addr); } +extern atomic_t perf_task_events; + +static inline void perf_event_task_sched_in(struct task_struct *task) +{ + COND_STMT(&perf_task_events, __perf_event_task_sched_in(task)); +} + +static inline +void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next) +{ + perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0); + + COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next)); +} + extern void perf_event_mmap(struct vm_area_struct *vma); extern struct perf_guest_info_callbacks *perf_guest_cbs; extern int perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks); diff --git a/kernel/perf_event.c b/kernel/perf_event.c index f365dd8ef8b0..eac7e3364335 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -1287,8 +1287,6 @@ void __perf_event_task_sched_out(struct task_struct *task, { int ctxn; - perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0); - for_each_task_context_nr(ctxn) perf_event_context_sched_out(task, ctxn, next); } -- cgit v1.2.3 From c66fb347946ebdd5b10908866ecc9fa05ee2cf3d Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 28 Nov 2010 14:09:57 -0800 Subject: Export 'get_pipe_info()' to other users And in particular, use it in 'pipe_fcntl()'. The other pipe functions do not need to use the 'careful' version, since they are only ever called for things that are already known to be pipes. The normal read/write/ioctl functions are called through the file operations structures, so if a file isn't a pipe, they'd never get called. But pipe_fcntl() is special, and called directly from the generic fcntl code, and needs to use the same careful function that the splice code is using. Cc: Jens Axboe Cc: Andrew Morton Cc: Al Viro Cc: Dave Jones Signed-off-by: Linus Torvalds --- fs/pipe.c | 2 +- fs/splice.c | 11 ----------- include/linux/pipe_fs_i.h | 12 ++++++++++++ 3 files changed, 13 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/fs/pipe.c b/fs/pipe.c index a8012a955720..b8997f8c6324 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -1204,7 +1204,7 @@ long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg) struct pipe_inode_info *pipe; long ret; - pipe = file->f_path.dentry->d_inode->i_pipe; + pipe = get_pipe_info(file); if (!pipe) return -EBADF; diff --git a/fs/splice.c b/fs/splice.c index 0d92dabcc576..ce2f02579e35 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1311,17 +1311,6 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe, struct pipe_inode_info *opipe, size_t len, unsigned int flags); -/* - * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same - * location, so checking ->i_pipe is not enough to verify that this is a - * pipe. - */ -static inline struct pipe_inode_info *get_pipe_info(struct file *file) -{ - struct inode *i = file->f_path.dentry->d_inode; - - return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL; -} /* * Determine where to splice to/from. diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 445796945ac9..3c5ac3147428 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -161,4 +161,16 @@ void generic_pipe_buf_release(struct pipe_inode_info *, struct pipe_buffer *); /* for F_SETPIPE_SZ and F_GETPIPE_SZ */ long pipe_fcntl(struct file *, unsigned int, unsigned long arg); +/* + * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same + * location, so checking ->i_pipe is not enough to verify that this is a + * pipe. + */ +static inline struct pipe_inode_info *get_pipe_info(struct file *file) +{ + struct inode *i = file->f_path.dentry->d_inode; + + return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL; +} + #endif -- cgit v1.2.3 From 72083646528d4887b920deb71b37e09bc7d227bb Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 28 Nov 2010 16:27:19 -0800 Subject: Un-inline get_pipe_info() helper function This avoids some include-file hell, and the function isn't really important enough to be inlined anyway. Reported-by: Ingo Molnar Signed-off-by: Linus Torvalds --- fs/pipe.c | 12 ++++++++++++ include/linux/pipe_fs_i.h | 13 +------------ 2 files changed, 13 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/fs/pipe.c b/fs/pipe.c index b8997f8c6324..04629f36e397 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -1199,6 +1199,18 @@ int pipe_proc_fn(struct ctl_table *table, int write, void __user *buf, return ret; } +/* + * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same + * location, so checking ->i_pipe is not enough to verify that this is a + * pipe. + */ +struct pipe_inode_info *get_pipe_info(struct file *file) +{ + struct inode *i = file->f_path.dentry->d_inode; + + return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL; +} + long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg) { struct pipe_inode_info *pipe; diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 3c5ac3147428..bb27d7ec2fb9 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -160,17 +160,6 @@ void generic_pipe_buf_release(struct pipe_inode_info *, struct pipe_buffer *); /* for F_SETPIPE_SZ and F_GETPIPE_SZ */ long pipe_fcntl(struct file *, unsigned int, unsigned long arg); - -/* - * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same - * location, so checking ->i_pipe is not enough to verify that this is a - * pipe. - */ -static inline struct pipe_inode_info *get_pipe_info(struct file *file) -{ - struct inode *i = file->f_path.dentry->d_inode; - - return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL; -} +struct pipe_inode_info *get_pipe_info(struct file *file); #endif -- cgit v1.2.3 From 25888e30319f8896fc656fc68643e6a078263060 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 25 Nov 2010 04:11:39 +0000 Subject: af_unix: limit recursion level MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Its easy to eat all kernel memory and trigger NMI watchdog, using an exploit program that queues unix sockets on top of others. lkml ref : http://lkml.org/lkml/2010/11/25/8 This mechanism is used in applications, one choice we have is to have a recursion limit. Other limits might be needed as well (if we queue other types of files), since the passfd mechanism is currently limited by socket receive queue sizes only. Add a recursion_level to unix socket, allowing up to 4 levels. Each time we send an unix socket through sendfd mechanism, we copy its recursion level (plus one) to receiver. This recursion level is cleared when socket receive queue is emptied. Reported-by: Марк Коренберг Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/af_unix.h | 2 ++ net/unix/af_unix.c | 37 ++++++++++++++++++++++++++++++++----- net/unix/garbage.c | 2 +- 3 files changed, 35 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/net/af_unix.h b/include/net/af_unix.h index 90c9e2872f27..18e5c3f67580 100644 --- a/include/net/af_unix.h +++ b/include/net/af_unix.h @@ -10,6 +10,7 @@ extern void unix_inflight(struct file *fp); extern void unix_notinflight(struct file *fp); extern void unix_gc(void); extern void wait_for_unix_gc(void); +extern struct sock *unix_get_socket(struct file *filp); #define UNIX_HASH_SIZE 256 @@ -56,6 +57,7 @@ struct unix_sock { spinlock_t lock; unsigned int gc_candidate : 1; unsigned int gc_maybe_cycle : 1; + unsigned char recursion_level; struct socket_wq peer_wq; }; #define unix_sk(__sk) ((struct unix_sock *)__sk) diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 3c95304a0817..2268e6798124 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1343,9 +1343,25 @@ static void unix_destruct_scm(struct sk_buff *skb) sock_wfree(skb); } +#define MAX_RECURSION_LEVEL 4 + static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb) { int i; + unsigned char max_level = 0; + int unix_sock_count = 0; + + for (i = scm->fp->count - 1; i >= 0; i--) { + struct sock *sk = unix_get_socket(scm->fp->fp[i]); + + if (sk) { + unix_sock_count++; + max_level = max(max_level, + unix_sk(sk)->recursion_level); + } + } + if (unlikely(max_level > MAX_RECURSION_LEVEL)) + return -ETOOMANYREFS; /* * Need to duplicate file references for the sake of garbage @@ -1356,9 +1372,11 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb) if (!UNIXCB(skb).fp) return -ENOMEM; - for (i = scm->fp->count-1; i >= 0; i--) - unix_inflight(scm->fp->fp[i]); - return 0; + if (unix_sock_count) { + for (i = scm->fp->count - 1; i >= 0; i--) + unix_inflight(scm->fp->fp[i]); + } + return max_level; } static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds) @@ -1393,6 +1411,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock, struct sk_buff *skb; long timeo; struct scm_cookie tmp_scm; + int max_level; if (NULL == siocb->scm) siocb->scm = &tmp_scm; @@ -1431,8 +1450,9 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock, goto out; err = unix_scm_to_skb(siocb->scm, skb, true); - if (err) + if (err < 0) goto out_free; + max_level = err + 1; unix_get_secdata(siocb->scm, skb); skb_reset_transport_header(skb); @@ -1514,6 +1534,8 @@ restart: if (sock_flag(other, SOCK_RCVTSTAMP)) __net_timestamp(skb); skb_queue_tail(&other->sk_receive_queue, skb); + if (max_level > unix_sk(other)->recursion_level) + unix_sk(other)->recursion_level = max_level; unix_state_unlock(other); other->sk_data_ready(other, len); sock_put(other); @@ -1544,6 +1566,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, int sent = 0; struct scm_cookie tmp_scm; bool fds_sent = false; + int max_level; if (NULL == siocb->scm) siocb->scm = &tmp_scm; @@ -1607,10 +1630,11 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, /* Only send the fds in the first buffer */ err = unix_scm_to_skb(siocb->scm, skb, !fds_sent); - if (err) { + if (err < 0) { kfree_skb(skb); goto out_err; } + max_level = err + 1; fds_sent = true; err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size); @@ -1626,6 +1650,8 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, goto pipe_err_free; skb_queue_tail(&other->sk_receive_queue, skb); + if (max_level > unix_sk(other)->recursion_level) + unix_sk(other)->recursion_level = max_level; unix_state_unlock(other); other->sk_data_ready(other, size); sent += size; @@ -1845,6 +1871,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, unix_state_lock(sk); skb = skb_dequeue(&sk->sk_receive_queue); if (skb == NULL) { + unix_sk(sk)->recursion_level = 0; if (copied >= target) goto unlock; diff --git a/net/unix/garbage.c b/net/unix/garbage.c index 40df93d1cf35..f89f83bf828e 100644 --- a/net/unix/garbage.c +++ b/net/unix/garbage.c @@ -96,7 +96,7 @@ static DECLARE_WAIT_QUEUE_HEAD(unix_gc_wait); unsigned int unix_tot_inflight; -static struct sock *unix_get_socket(struct file *filp) +struct sock *unix_get_socket(struct file *filp) { struct sock *u_sock = NULL; struct inode *inode = filp->f_path.dentry->d_inode; -- cgit v1.2.3 From acfa747baf73922021a047f2d87a2d866f5dbab5 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 29 Nov 2010 10:16:54 +0100 Subject: TTY: open/hangup race fixup Like in the "TTY: don't allow reopen when ldisc is changing" patch, this one fixes a TTY WARNING as described in the option 1) there: 1) __tty_hangup from tty_ldisc_hangup to tty_ldisc_enable. During this section tty_lock is held. However tty_lock is temporarily dropped in the middle of the function by tty_ldisc_hangup. The fix is to introduce a new flag which we set during the unlocked window and check it in tty_reopen too. The flag is TTY_HUPPING and is cleared after TTY_HUPPED is set. While at it, remove duplicate TTY_HUPPED set_bit. The one after calling ops->hangup seems to be more correct. But anyway, we hold tty_lock, so there should be no difference. Also document the function it does that kind of crap. Nicely reproducible with two forked children: static void do_work(const char *tty) { if (signal(SIGHUP, SIG_IGN) == SIG_ERR) exit(1); setsid(); while (1) { int fd = open(tty, O_RDWR|O_NOCTTY); if (fd < 0) continue; if (ioctl(fd, TIOCSCTTY)) continue; if (vhangup()) continue; close(fd); } exit(0); } Signed-off-by: Jiri Slaby Reported-by: Reported-by: Kyle McMartin Cc: Alan Cox Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_io.c | 10 +++++++++- include/linux/tty.h | 1 + 2 files changed, 10 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 878f6d667b17..35480dd57a30 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -559,6 +559,9 @@ void __tty_hangup(struct tty_struct *tty) tty_lock(); + /* some functions below drop BTM, so we need this bit */ + set_bit(TTY_HUPPING, &tty->flags); + /* inuse_filps is protected by the single tty lock, this really needs to change if we want to flush the workqueue with the lock held */ @@ -578,6 +581,10 @@ void __tty_hangup(struct tty_struct *tty) } spin_unlock(&tty_files_lock); + /* + * it drops BTM and thus races with reopen + * we protect the race by TTY_HUPPING + */ tty_ldisc_hangup(tty); read_lock(&tasklist_lock); @@ -615,7 +622,6 @@ void __tty_hangup(struct tty_struct *tty) tty->session = NULL; tty->pgrp = NULL; tty->ctrl_status = 0; - set_bit(TTY_HUPPED, &tty->flags); spin_unlock_irqrestore(&tty->ctrl_lock, flags); /* Account for the p->signal references we killed */ @@ -641,6 +647,7 @@ void __tty_hangup(struct tty_struct *tty) * can't yet guarantee all that. */ set_bit(TTY_HUPPED, &tty->flags); + clear_bit(TTY_HUPPING, &tty->flags); tty_ldisc_enable(tty); tty_unlock(); @@ -1311,6 +1318,7 @@ static int tty_reopen(struct tty_struct *tty) struct tty_driver *driver = tty->driver; if (test_bit(TTY_CLOSING, &tty->flags) || + test_bit(TTY_HUPPING, &tty->flags) || test_bit(TTY_LDISC_CHANGING, &tty->flags)) return -EIO; diff --git a/include/linux/tty.h b/include/linux/tty.h index c7ea9bc8897c..021bfd2f0860 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -367,6 +367,7 @@ struct tty_file_private { #define TTY_HUPPED 18 /* Post driver->hangup() */ #define TTY_FLUSHING 19 /* Flushing to ldisc in progress */ #define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */ +#define TTY_HUPPING 21 /* ->hangup() in progress */ #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) -- cgit v1.2.3 From 3c77f845722158206a7209c45ccddc264d19319c Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Tue, 30 Nov 2010 20:55:34 +0100 Subject: exec: make argv/envp memory visible to oom-killer Brad Spengler published a local memory-allocation DoS that evades the OOM-killer (though not the virtual memory RLIMIT): http://www.grsecurity.net/~spender/64bit_dos.c execve()->copy_strings() can allocate a lot of memory, but this is not visible to oom-killer, nobody can see the nascent bprm->mm and take it into account. With this patch get_arg_page() increments current's MM_ANONPAGES counter every time we allocate the new page for argv/envp. When do_execve() succeds or fails, we change this counter back. Technically this is not 100% correct, we can't know if the new page is swapped out and turn MM_ANONPAGES into MM_SWAPENTS, but I don't think this really matters and everything becomes correct once exec changes ->mm or fails. Reported-by: Brad Spengler Reviewed-and-discussed-by: KOSAKI Motohiro Signed-off-by: Oleg Nesterov Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- fs/exec.c | 32 ++++++++++++++++++++++++++++++-- include/linux/binfmts.h | 1 + 2 files changed, 31 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/fs/exec.c b/fs/exec.c index 99d33a1371e9..4303b9035fe7 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -164,6 +164,25 @@ out: #ifdef CONFIG_MMU +static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) +{ + struct mm_struct *mm = current->mm; + long diff = (long)(pages - bprm->vma_pages); + + if (!mm || !diff) + return; + + bprm->vma_pages = pages; + +#ifdef SPLIT_RSS_COUNTING + add_mm_counter(mm, MM_ANONPAGES, diff); +#else + spin_lock(&mm->page_table_lock); + add_mm_counter(mm, MM_ANONPAGES, diff); + spin_unlock(&mm->page_table_lock); +#endif +} + static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, int write) { @@ -186,6 +205,8 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start; struct rlimit *rlim; + acct_arg_size(bprm, size / PAGE_SIZE); + /* * We've historically supported up to 32 pages (ARG_MAX) * of argument strings even with small stacks @@ -276,6 +297,10 @@ static bool valid_arg_len(struct linux_binprm *bprm, long len) #else +static inline void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) +{ +} + static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, int write) { @@ -1003,6 +1028,7 @@ int flush_old_exec(struct linux_binprm * bprm) /* * Release all of the old mmap stuff */ + acct_arg_size(bprm, 0); retval = exec_mmap(bprm->mm); if (retval) goto out; @@ -1426,8 +1452,10 @@ int do_execve(const char * filename, return retval; out: - if (bprm->mm) - mmput (bprm->mm); + if (bprm->mm) { + acct_arg_size(bprm, 0); + mmput(bprm->mm); + } out_file: if (bprm->file) { diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index a065612fc928..7c87796d20da 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -29,6 +29,7 @@ struct linux_binprm{ char buf[BINPRM_BUF_SIZE]; #ifdef CONFIG_MMU struct vm_area_struct *vma; + unsigned long vma_pages; #else # define MAX_ARG_PAGES 32 struct page *page[MAX_ARG_PAGES]; -- cgit v1.2.3 From 114279be2120a916e8a04feeb2ac976a10016f2f Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Tue, 30 Nov 2010 20:56:02 +0100 Subject: exec: copy-and-paste the fixes into compat_do_execve() paths Note: this patch targets 2.6.37 and tries to be as simple as possible. That is why it adds more copy-and-paste horror into fs/compat.c and uglifies fs/exec.c, this will be cleanuped later. compat_copy_strings() plays with bprm->vma/mm directly and thus has two problems: it lacks the RLIMIT_STACK check and argv/envp memory is not visible to oom killer. Export acct_arg_size() and get_arg_page(), change compat_copy_strings() to use get_arg_page(), change compat_do_execve() to do acct_arg_size(0) as do_execve() does. Add the fatal_signal_pending/cond_resched checks into compat_count() and compat_copy_strings(), this matches the code in fs/exec.c and certainly makes sense. Signed-off-by: Oleg Nesterov Cc: KOSAKI Motohiro Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- fs/compat.c | 28 +++++++++++++++------------- fs/exec.c | 8 ++++---- include/linux/binfmts.h | 4 ++++ 3 files changed, 23 insertions(+), 17 deletions(-) (limited to 'include') diff --git a/fs/compat.c b/fs/compat.c index c580c322fa6b..eb1740ac8c0a 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -1350,6 +1350,10 @@ static int compat_count(compat_uptr_t __user *argv, int max) argv++; if (i++ >= max) return -E2BIG; + + if (fatal_signal_pending(current)) + return -ERESTARTNOHAND; + cond_resched(); } } return i; @@ -1391,6 +1395,12 @@ static int compat_copy_strings(int argc, compat_uptr_t __user *argv, while (len > 0) { int offset, bytes_to_copy; + if (fatal_signal_pending(current)) { + ret = -ERESTARTNOHAND; + goto out; + } + cond_resched(); + offset = pos % PAGE_SIZE; if (offset == 0) offset = PAGE_SIZE; @@ -1407,18 +1417,8 @@ static int compat_copy_strings(int argc, compat_uptr_t __user *argv, if (!kmapped_page || kpos != (pos & PAGE_MASK)) { struct page *page; -#ifdef CONFIG_STACK_GROWSUP - ret = expand_stack_downwards(bprm->vma, pos); - if (ret < 0) { - /* We've exceed the stack rlimit. */ - ret = -E2BIG; - goto out; - } -#endif - ret = get_user_pages(current, bprm->mm, pos, - 1, 1, 1, &page, NULL); - if (ret <= 0) { - /* We've exceed the stack rlimit. */ + page = get_arg_page(bprm, pos, 1); + if (!page) { ret = -E2BIG; goto out; } @@ -1539,8 +1539,10 @@ int compat_do_execve(char * filename, return retval; out: - if (bprm->mm) + if (bprm->mm) { + acct_arg_size(bprm, 0); mmput(bprm->mm); + } out_file: if (bprm->file) { diff --git a/fs/exec.c b/fs/exec.c index 4303b9035fe7..d68c378a3137 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -164,7 +164,7 @@ out: #ifdef CONFIG_MMU -static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) +void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) { struct mm_struct *mm = current->mm; long diff = (long)(pages - bprm->vma_pages); @@ -183,7 +183,7 @@ static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) #endif } -static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, +struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, int write) { struct page *page; @@ -297,11 +297,11 @@ static bool valid_arg_len(struct linux_binprm *bprm, long len) #else -static inline void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) +void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) { } -static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, +struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, int write) { struct page *page; diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 7c87796d20da..64a7114a9394 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -60,6 +60,10 @@ struct linux_binprm{ unsigned long loader, exec; }; +extern void acct_arg_size(struct linux_binprm *bprm, unsigned long pages); +extern struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, + int write); + #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) -- cgit v1.2.3 From 0417596f66dd6621f4fd46563c7c56a95311dbe8 Mon Sep 17 00:00:00 2001 From: Bastien Nocera Date: Mon, 29 Nov 2010 23:33:05 -0800 Subject: Input: add keycodes for touchpad on/off keys Some laptops will have a "touchpad toggle" soft button, which expects user-space to turn off the touchpad themselves, some other devices will do this in hardware, but send key events telling us that the touchpad has been turned off/on. KEY_TOUCHPAD_ON/KEY_TOUCHPAD_OFF will be used by user-space to show a popup with the status of the touchpad. Signed-off-by: Bastien Nocera Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/input.h b/include/linux/input.h index 6ef44465db8d..a50046f15372 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -624,6 +624,10 @@ struct input_keymap_entry { #define KEY_CAMERA_FOCUS 0x210 #define KEY_WPS_BUTTON 0x211 /* WiFi Protected Setup key */ +#define KEY_TOUCHPAD_TOGGLE 0x212 /* Request switch touchpad on or off */ +#define KEY_TOUCHPAD_ON 0x213 +#define KEY_TOUCHPAD_OFF 0x214 + #define BTN_TRIGGER_HAPPY 0x2c0 #define BTN_TRIGGER_HAPPY1 0x2c0 #define BTN_TRIGGER_HAPPY2 0x2c1 -- cgit v1.2.3 From 86b17f76f462db460d6d916e105a4c44cb353e36 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 29 Nov 2010 23:33:04 -0800 Subject: Input: document struct input_absinfo Add documentation for struct input_absinfo that is used in EVIOCGABS and EVIOCSABS ioctl and specify units of measure used for reporting resolution for an axis. Acked-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/input.h b/include/linux/input.h index a50046f15372..a8af21d42bc1 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -47,6 +47,25 @@ struct input_id { __u16 version; }; +/** + * struct input_absinfo - used by EVIOCGABS/EVIOCSABS ioctls + * @value: latest reported value for the axis. + * @minimum: specifies minimum value for the axis. + * @maximum: specifies maximum value for the axis. + * @fuzz: specifies fuzz value that is used to filter noise from + * the event stream. + * @flat: values that are within this value will be discarded by + * joydev interface and reported as 0 instead. + * @resolution: specifies resolution for the values reported for + * the axis. + * + * Note that input core does not clamp reported values to the + * [minimum, maximum] limits, such task is left to userspace. + * + * Resolution for main axes (ABS_X, ABS_Y, ABS_Z) is reported in + * units per millimeter (units/mm), resolution for rotational axes + * (ABS_RX, ABS_RY, ABS_RZ) is reported in units per radian. + */ struct input_absinfo { __s32 value; __s32 minimum; @@ -1134,7 +1153,7 @@ struct input_mt_slot { * of tracked contacts * @mtsize: number of MT slots the device uses * @slot: MT slot currently being transmitted - * @absinfo: array of &struct absinfo elements holding information + * @absinfo: array of &struct input_absinfo elements holding information * about absolute axes (current value, min, max, flat, fuzz, * resolution) * @key: reflects current state of device's keys/buttons -- cgit v1.2.3 From 879aa24d6394aa04b690a600a41ff500441ad384 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 26 Nov 2010 06:47:28 -0300 Subject: [media] V4L: improve the BKL replacement heuristic The BKL replacement mutex had some serious performance side-effects on V4L drivers. It is replaced by a better heuristic that works around the worst of the side-effects. Read the v4l2-dev.c comments for the whole sorry story. This is a temporary measure only until we can convert all v4l drivers to use unlocked_ioctl. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-dev.c | 31 ++++++++++++++++++++++++++++--- drivers/media/video/v4l2-device.c | 1 + include/media/v4l2-device.h | 2 ++ 3 files changed, 31 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index bfd392e2436d..6b64fd607b20 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -245,13 +245,38 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) if (vdev->lock) mutex_unlock(vdev->lock); } else if (vdev->fops->ioctl) { - /* TODO: convert all drivers to unlocked_ioctl */ + /* This code path is a replacement for the BKL. It is a major + * hack but it will have to do for those drivers that are not + * yet converted to use unlocked_ioctl. + * + * There are two options: if the driver implements struct + * v4l2_device, then the lock defined there is used to + * serialize the ioctls. Otherwise the v4l2 core lock defined + * below is used. This lock is really bad since it serializes + * completely independent devices. + * + * Both variants suffer from the same problem: if the driver + * sleeps, then it blocks all ioctls since the lock is still + * held. This is very common for VIDIOC_DQBUF since that + * normally waits for a frame to arrive. As a result any other + * ioctl calls will proceed very, very slowly since each call + * will have to wait for the VIDIOC_QBUF to finish. Things that + * should take 0.01s may now take 10-20 seconds. + * + * The workaround is to *not* take the lock for VIDIOC_DQBUF. + * This actually works OK for videobuf-based drivers, since + * videobuf will take its own internal lock. + */ static DEFINE_MUTEX(v4l2_ioctl_mutex); + struct mutex *m = vdev->v4l2_dev ? + &vdev->v4l2_dev->ioctl_lock : &v4l2_ioctl_mutex; - mutex_lock(&v4l2_ioctl_mutex); + if (cmd != VIDIOC_DQBUF && mutex_lock_interruptible(m)) + return -ERESTARTSYS; if (video_is_registered(vdev)) ret = vdev->fops->ioctl(filp, cmd, arg); - mutex_unlock(&v4l2_ioctl_mutex); + if (cmd != VIDIOC_DQBUF) + mutex_unlock(m); } else ret = -ENOTTY; diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c index 0b08f96b74a5..7fe6f92af480 100644 --- a/drivers/media/video/v4l2-device.c +++ b/drivers/media/video/v4l2-device.c @@ -35,6 +35,7 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev) INIT_LIST_HEAD(&v4l2_dev->subdevs); spin_lock_init(&v4l2_dev->lock); + mutex_init(&v4l2_dev->ioctl_lock); v4l2_dev->dev = dev; if (dev == NULL) { /* If dev == NULL, then name must be filled in by the caller */ diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h index 6648036b728d..b16f307d471a 100644 --- a/include/media/v4l2-device.h +++ b/include/media/v4l2-device.h @@ -51,6 +51,8 @@ struct v4l2_device { unsigned int notification, void *arg); /* The control handler. May be NULL. */ struct v4l2_ctrl_handler *ctrl_handler; + /* BKL replacement mutex. Temporary solution only. */ + struct mutex ioctl_lock; }; /* Initialize v4l2_dev and make dev->driver_data point to v4l2_dev. -- cgit v1.2.3 From a757ee2216211278680dd8ac869aabe7b4a9970d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 2 Dec 2010 01:57:03 -0200 Subject: [media] Don't export format_by_forcc on two different drivers Drivers should append their name on exported symbols, to avoid conflicts with allyesconfig: drivers/staging/built-in.o: In function `format_by_fourcc': /home/v4l/work_trees/linus/drivers/staging/cx25821/cx25821-video.c:96: multiple definition of `format_by_fourcc' drivers/media/built-in.o:/home/v4l/work_trees/linus/drivers/media/common/saa7146_video.c:88: first defined here Let's rename both occurences with a small shellscript: for i in drivers/staging/cx25821/*.[ch]; do sed s,format_by_fourcc,cx25821_format_by_fourcc,g <$i >a && mv a $i; done for i in drivers/media/common/saa7146*.[ch]; do sed s,format_by_fourcc,saa7146_format_by_fourcc,g <$i >a && mv a $i; done for i in include/media/saa7146*.[ch]; do sed s,format_by_fourcc,saa7146_format_by_fourcc,g <$i >a && mv a $i; done Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/saa7146_hlp.c | 8 ++++---- drivers/media/common/saa7146_video.c | 16 ++++++++-------- drivers/staging/cx25821/cx25821-video.c | 8 ++++---- drivers/staging/cx25821/cx25821-video.h | 2 +- include/media/saa7146.h | 2 +- 5 files changed, 18 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/drivers/media/common/saa7146_hlp.c b/drivers/media/common/saa7146_hlp.c index 05bde9ccb770..1d1d8d200755 100644 --- a/drivers/media/common/saa7146_hlp.c +++ b/drivers/media/common/saa7146_hlp.c @@ -558,7 +558,7 @@ static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, e static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat) { struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *sfmt = format_by_fourcc(dev, pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat); int b_depth = vv->ov_fmt->depth; int b_bpl = vv->ov_fb.fmt.bytesperline; @@ -702,7 +702,7 @@ static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa71 struct saa7146_vv *vv = dev->vv_data; struct saa7146_video_dma vdma1; - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); int width = buf->fmt->width; int height = buf->fmt->height; @@ -827,7 +827,7 @@ static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa71 struct saa7146_video_dma vdma2; struct saa7146_video_dma vdma3; - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); int width = buf->fmt->width; int height = buf->fmt->height; @@ -994,7 +994,7 @@ static void program_capture_engine(struct saa7146_dev *dev, int planar) void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) { - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); struct saa7146_vv *vv = dev->vv_data; u32 vdma1_prot_addr; diff --git a/drivers/media/common/saa7146_video.c b/drivers/media/common/saa7146_video.c index 741c5732b430..d246910129e8 100644 --- a/drivers/media/common/saa7146_video.c +++ b/drivers/media/common/saa7146_video.c @@ -84,7 +84,7 @@ static struct saa7146_format formats[] = { static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); -struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc) +struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc) { int i, j = NUM_FORMATS; @@ -266,7 +266,7 @@ static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *bu struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); struct scatterlist *list = dma->sglist; int length = dma->sglen; - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); DEB_EE(("dev:%p, buf:%p, sg_len:%d\n",dev,buf,length)); @@ -408,7 +408,7 @@ static int video_begin(struct saa7146_fh *fh) } } - fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); + fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); /* we need to have a valid format set here */ BUG_ON(NULL == fmt); @@ -460,7 +460,7 @@ static int video_end(struct saa7146_fh *fh, struct file *file) return -EBUSY; } - fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); + fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); /* we need to have a valid format set here */ BUG_ON(NULL == fmt); @@ -536,7 +536,7 @@ static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *f return -EPERM; /* check args */ - fmt = format_by_fourcc(dev, fb->fmt.pixelformat); + fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat); if (NULL == fmt) return -EINVAL; @@ -760,7 +760,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_forma DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh)); - fmt = format_by_fourcc(dev, f->fmt.pix.pixelformat); + fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat); if (NULL == fmt) return -EINVAL; @@ -1264,7 +1264,7 @@ static int buffer_prepare(struct videobuf_queue *q, buf->fmt = &fh->video_fmt; buf->vb.field = fh->video_fmt.field; - sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); release_all_pagetables(dev, buf); if( 0 != IS_PLANAR(sfmt->trans)) { @@ -1378,7 +1378,7 @@ static int video_open(struct saa7146_dev *dev, struct file *file) fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24; fh->video_fmt.bytesperline = 0; fh->video_fmt.field = V4L2_FIELD_ANY; - sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); + sfmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8; videobuf_queue_sg_init(&fh->video_q, &video_qops, diff --git a/drivers/staging/cx25821/cx25821-video.c b/drivers/staging/cx25821/cx25821-video.c index e7f1d5778cec..52389308f333 100644 --- a/drivers/staging/cx25821/cx25821-video.c +++ b/drivers/staging/cx25821/cx25821-video.c @@ -92,7 +92,7 @@ int cx25821_get_format_size(void) return ARRAY_SIZE(formats); } -struct cx25821_fmt *format_by_fourcc(unsigned int fourcc) +struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc) { unsigned int i; @@ -848,7 +848,7 @@ static int video_open(struct file *file) pix_format = (dev->channels[ch_id].pixel_formats == PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV; - fh->fmt = format_by_fourcc(pix_format); + fh->fmt = cx25821_format_by_fourcc(pix_format); v4l2_prio_open(&dev->channels[ch_id].prio, &fh->prio); @@ -1010,7 +1010,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, if (0 != err) return err; - fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); + fh->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); fh->vidq.field = f->fmt.pix.field; /* check if width and height is valid based on set standard */ @@ -1119,7 +1119,7 @@ int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fo enum v4l2_field field; unsigned int maxw, maxh; - fmt = format_by_fourcc(f->fmt.pix.pixelformat); + fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); if (NULL == fmt) return -EINVAL; diff --git a/drivers/staging/cx25821/cx25821-video.h b/drivers/staging/cx25821/cx25821-video.h index cc6034b1a95d..a2415d33235b 100644 --- a/drivers/staging/cx25821/cx25821-video.h +++ b/drivers/staging/cx25821/cx25821-video.h @@ -87,7 +87,7 @@ extern unsigned int vid_limit; #define FORMAT_FLAGS_PACKED 0x01 extern struct cx25821_fmt formats[]; -extern struct cx25821_fmt *format_by_fourcc(unsigned int fourcc); +extern struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc); extern struct cx25821_data timeout_data[MAX_VID_CHANNEL_NUM]; extern void cx25821_dump_video_queue(struct cx25821_dev *dev, diff --git a/include/media/saa7146.h b/include/media/saa7146.h index 7a9f76ecbbbd..ac7ce00f39cf 100644 --- a/include/media/saa7146.h +++ b/include/media/saa7146.h @@ -161,7 +161,7 @@ extern struct list_head saa7146_devices; extern struct mutex saa7146_devices_lock; int saa7146_register_extension(struct saa7146_extension*); int saa7146_unregister_extension(struct saa7146_extension*); -struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc); +struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc); int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt); void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt); int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, struct scatterlist *list, int length ); -- cgit v1.2.3 From e5fc7345412d5e4758fcef55a74354c5cbefd61e Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 1 Dec 2010 14:51:44 +0000 Subject: xen: use PHYSDEVOP_get_free_pirq to implement find_unbound_pirq Use the new hypercall PHYSDEVOP_get_free_pirq to ask Xen to allocate a pirq. Remove the unsupported PHYSDEVOP_get_nr_pirqs hypercall to get the amount of pirq available. This fixes find_unbound_pirq that otherwise would return a number starting from nr_irqs that might very well be out of range in Xen. The symptom of this bug is that when you passthrough an MSI capable pci device to a PV on HVM guest, Linux would fail to enable MSIs on the device. Signed-off-by: Stefano Stabellini --- drivers/xen/events.c | 45 ++++++++++++++++++----------------------- include/xen/interface/physdev.h | 10 +++++++++ 2 files changed, 30 insertions(+), 25 deletions(-) (limited to 'include') diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 2811bb988ea0..7ab43c33f746 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -105,7 +105,6 @@ struct irq_info static struct irq_info *irq_info; static int *pirq_to_irq; -static int nr_pirqs; static int *evtchn_to_irq; struct cpu_evtchn_s { @@ -385,12 +384,17 @@ static int get_nr_hw_irqs(void) return ret; } -/* callers of this function should make sure that PHYSDEVOP_get_nr_pirqs - * succeeded otherwise nr_pirqs won't hold the right value */ -static int find_unbound_pirq(void) +static int find_unbound_pirq(int type) { - int i; - for (i = nr_pirqs-1; i >= 0; i--) { + int rc, i; + struct physdev_get_free_pirq op_get_free_pirq; + op_get_free_pirq.type = type; + + rc = HYPERVISOR_physdev_op(PHYSDEVOP_get_free_pirq, &op_get_free_pirq); + if (!rc) + return op_get_free_pirq.pirq; + + for (i = 0; i < nr_irqs; i++) { if (pirq_to_irq[i] < 0) return i; } @@ -611,10 +615,10 @@ int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name) spin_lock(&irq_mapping_update_lock); - if ((pirq > nr_pirqs) || (gsi > nr_irqs)) { + if ((pirq > nr_irqs) || (gsi > nr_irqs)) { printk(KERN_WARNING "xen_map_pirq_gsi: %s %s is incorrect!\n", - pirq > nr_pirqs ? "nr_pirqs" :"", - gsi > nr_irqs ? "nr_irqs" : ""); + pirq > nr_irqs ? "pirq" :"", + gsi > nr_irqs ? "gsi" : ""); goto out; } @@ -672,7 +676,7 @@ void xen_allocate_pirq_msi(char *name, int *irq, int *pirq) if (*irq == -1) goto out; - *pirq = find_unbound_pirq(); + *pirq = find_unbound_pirq(MAP_PIRQ_TYPE_MSI); if (*pirq == -1) goto out; @@ -1506,26 +1510,17 @@ void xen_callback_vector(void) {} void __init xen_init_IRQ(void) { - int i, rc; - struct physdev_nr_pirqs op_nr_pirqs; + int i; cpu_evtchn_mask_p = kcalloc(nr_cpu_ids, sizeof(struct cpu_evtchn_s), GFP_KERNEL); irq_info = kcalloc(nr_irqs, sizeof(*irq_info), GFP_KERNEL); - rc = HYPERVISOR_physdev_op(PHYSDEVOP_get_nr_pirqs, &op_nr_pirqs); - if (rc < 0) { - nr_pirqs = nr_irqs; - if (rc != -ENOSYS) - printk(KERN_WARNING "PHYSDEVOP_get_nr_pirqs returned rc=%d\n", rc); - } else { - if (xen_pv_domain() && !xen_initial_domain()) - nr_pirqs = max((int)op_nr_pirqs.nr_pirqs, nr_irqs); - else - nr_pirqs = op_nr_pirqs.nr_pirqs; - } - pirq_to_irq = kcalloc(nr_pirqs, sizeof(*pirq_to_irq), GFP_KERNEL); - for (i = 0; i < nr_pirqs; i++) + /* We are using nr_irqs as the maximum number of pirq available but + * that number is actually chosen by Xen and we don't know exactly + * what it is. Be careful choosing high pirq numbers. */ + pirq_to_irq = kcalloc(nr_irqs, sizeof(*pirq_to_irq), GFP_KERNEL); + for (i = 0; i < nr_irqs; i++) pirq_to_irq[i] = -1; evtchn_to_irq = kcalloc(NR_EVENT_CHANNELS, sizeof(*evtchn_to_irq), diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h index 2b2c66c3df00..534cac89a77d 100644 --- a/include/xen/interface/physdev.h +++ b/include/xen/interface/physdev.h @@ -188,6 +188,16 @@ struct physdev_nr_pirqs { uint32_t nr_pirqs; }; +/* type is MAP_PIRQ_TYPE_GSI or MAP_PIRQ_TYPE_MSI + * the hypercall returns a free pirq */ +#define PHYSDEVOP_get_free_pirq 23 +struct physdev_get_free_pirq { + /* IN */ + int type; + /* OUT */ + uint32_t pirq; +}; + /* * Notify that some PIRQ-bound event channels have been unmasked. * ** This command is obsolete since interface version 0x00030202 and is ** -- cgit v1.2.3 From af42b8d12f8adec6711cb824549a0edac6a4ae8f Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 1 Dec 2010 14:51:44 +0000 Subject: xen: fix MSI setup and teardown for PV on HVM guests When remapping MSIs into pirqs for PV on HVM guests, qemu is responsible for doing the actual mapping and unmapping. We only give qemu the desired pirq number when we ask to do the mapping the first time, after that we should be reading back the pirq number from qemu every time we want to re-enable the MSI. This fixes a bug in xen_hvm_setup_msi_irqs that manifests itself when trying to enable the same MSI for the second time: the old MSI to pirq mapping is still valid at this point but xen_hvm_setup_msi_irqs would try to assign a new pirq anyway. A simple way to reproduce this bug is to assign an MSI capable network card to a PV on HVM guest, if the user brings down the corresponding ethernet interface and up again, Linux would fail to enable MSIs on the device. Signed-off-by: Stefano Stabellini --- arch/x86/pci/xen.c | 27 ++++++++++++++++++++------- drivers/xen/events.c | 24 +++++++++++++++++------- include/xen/events.h | 7 ++++++- 3 files changed, 43 insertions(+), 15 deletions(-) (limited to 'include') diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index d7b5109f7a9c..25cd4a07d09f 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -70,6 +70,9 @@ static int acpi_register_gsi_xen_hvm(struct device *dev, u32 gsi, struct xen_pci_frontend_ops *xen_pci_frontend; EXPORT_SYMBOL_GPL(xen_pci_frontend); +#define XEN_PIRQ_MSI_DATA (MSI_DATA_TRIGGER_EDGE | \ + MSI_DATA_LEVEL_ASSERT | (3 << 8) | MSI_DATA_VECTOR(0)) + static void xen_msi_compose_msg(struct pci_dev *pdev, unsigned int pirq, struct msi_msg *msg) { @@ -83,12 +86,7 @@ static void xen_msi_compose_msg(struct pci_dev *pdev, unsigned int pirq, MSI_ADDR_REDIRECTION_CPU | MSI_ADDR_DEST_ID(pirq); - msg->data = - MSI_DATA_TRIGGER_EDGE | - MSI_DATA_LEVEL_ASSERT | - /* delivery mode reserved */ - (3 << 8) | - MSI_DATA_VECTOR(0); + msg->data = XEN_PIRQ_MSI_DATA; } static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) @@ -98,8 +96,23 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) struct msi_msg msg; list_for_each_entry(msidesc, &dev->msi_list, list) { + __read_msi_msg(msidesc, &msg); + pirq = MSI_ADDR_EXT_DEST_ID(msg.address_hi) | + ((msg.address_lo >> MSI_ADDR_DEST_ID_SHIFT) & 0xff); + if (xen_irq_from_pirq(pirq) >= 0 && msg.data == XEN_PIRQ_MSI_DATA) { + xen_allocate_pirq_msi((type == PCI_CAP_ID_MSIX) ? + "msi-x" : "msi", &irq, &pirq, XEN_ALLOC_IRQ); + if (irq < 0) + goto error; + ret = set_irq_msi(irq, msidesc); + if (ret < 0) + goto error_while; + printk(KERN_DEBUG "xen: msi already setup: msi --> irq=%d" + " pirq=%d\n", irq, pirq); + return 0; + } xen_allocate_pirq_msi((type == PCI_CAP_ID_MSIX) ? - "msi-x" : "msi", &irq, &pirq); + "msi-x" : "msi", &irq, &pirq, (XEN_ALLOC_IRQ | XEN_ALLOC_PIRQ)); if (irq < 0 || pirq < 0) goto error; printk(KERN_DEBUG "xen: msi --> irq=%d, pirq=%d\n", irq, pirq); diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 7ab43c33f746..f78945ce8aeb 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -668,17 +668,21 @@ out: #include #include "../pci/msi.h" -void xen_allocate_pirq_msi(char *name, int *irq, int *pirq) +void xen_allocate_pirq_msi(char *name, int *irq, int *pirq, int alloc) { spin_lock(&irq_mapping_update_lock); - *irq = find_unbound_irq(); - if (*irq == -1) - goto out; + if (alloc & XEN_ALLOC_IRQ) { + *irq = find_unbound_irq(); + if (*irq == -1) + goto out; + } - *pirq = find_unbound_pirq(MAP_PIRQ_TYPE_MSI); - if (*pirq == -1) - goto out; + if (alloc & XEN_ALLOC_PIRQ) { + *pirq = find_unbound_pirq(MAP_PIRQ_TYPE_MSI); + if (*pirq == -1) + goto out; + } set_irq_chip_and_handler_name(*irq, &xen_pirq_chip, handle_level_irq, name); @@ -766,6 +770,7 @@ int xen_destroy_irq(int irq) printk(KERN_WARNING "unmap irq failed %d\n", rc); goto out; } + pirq_to_irq[info->u.pirq.pirq] = -1; } irq_info[irq] = mk_unbound_info(); @@ -786,6 +791,11 @@ int xen_gsi_from_irq(unsigned irq) return gsi_from_irq(irq); } +int xen_irq_from_pirq(unsigned pirq) +{ + return pirq_to_irq[pirq]; +} + int bind_evtchn_to_irq(unsigned int evtchn) { int irq; diff --git a/include/xen/events.h b/include/xen/events.h index 646dd17d3aa4..00f53ddcc062 100644 --- a/include/xen/events.h +++ b/include/xen/events.h @@ -76,7 +76,9 @@ int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name); #ifdef CONFIG_PCI_MSI /* Allocate an irq and a pirq to be used with MSIs. */ -void xen_allocate_pirq_msi(char *name, int *irq, int *pirq); +#define XEN_ALLOC_PIRQ (1 << 0) +#define XEN_ALLOC_IRQ (1 << 1) +void xen_allocate_pirq_msi(char *name, int *irq, int *pirq, int alloc_mask); int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type); #endif @@ -89,4 +91,7 @@ int xen_vector_from_irq(unsigned pirq); /* Return gsi allocated to pirq */ int xen_gsi_from_irq(unsigned pirq); +/* Return irq from pirq */ +int xen_irq_from_pirq(unsigned pirq); + #endif /* _XEN_EVENTS_H */ -- cgit v1.2.3 From 6072d13c429373c5d63b69dadbbef40a9b035552 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 1 Dec 2010 13:35:19 -0500 Subject: Call the filesystem back whenever a page is removed from the page cache NFS needs to be able to release objects that are stored in the page cache once the page itself is no longer visible from the page cache. This patch adds a callback to the address space operations that allows filesystems to perform page cleanups once the page has been removed from the page cache. Original patch by: Linus Torvalds [trondmy: cover the cases of invalidate_inode_pages2() and truncate_inode_pages()] Signed-off-by: Trond Myklebust --- Documentation/filesystems/Locking | 7 ++++++- Documentation/filesystems/vfs.txt | 7 +++++++ include/linux/fs.h | 1 + mm/filemap.c | 5 +++++ mm/truncate.c | 4 ++++ mm/vmscan.c | 7 +++++++ 6 files changed, 30 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index a91f30890011..b6426f15b4ae 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -173,12 +173,13 @@ prototypes: sector_t (*bmap)(struct address_space *, sector_t); int (*invalidatepage) (struct page *, unsigned long); int (*releasepage) (struct page *, int); + void (*freepage)(struct page *); int (*direct_IO)(int, struct kiocb *, const struct iovec *iov, loff_t offset, unsigned long nr_segs); int (*launder_page) (struct page *); locking rules: - All except set_page_dirty may block + All except set_page_dirty and freepage may block BKL PageLocked(page) i_mutex writepage: no yes, unlocks (see below) @@ -193,6 +194,7 @@ perform_write: no n/a yes bmap: no invalidatepage: no yes releasepage: no yes +freepage: no yes direct_IO: no launder_page: no yes @@ -288,6 +290,9 @@ buffers from the page in preparation for freeing it. It returns zero to indicate that the buffers are (or may be) freeable. If ->releasepage is zero, the kernel assumes that the fs has no private interest in the buffers. + ->freepage() is called when the kernel is done dropping the page +from the page cache. + ->launder_page() may be called prior to releasing a page if it is still found to be dirty. It returns zero if the page was successfully cleaned, or an error value if not. Note that in order to prevent the page diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index ed7e5efc06d8..3b14a557eca6 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -534,6 +534,7 @@ struct address_space_operations { sector_t (*bmap)(struct address_space *, sector_t); int (*invalidatepage) (struct page *, unsigned long); int (*releasepage) (struct page *, int); + void (*freepage)(struct page *); ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov, loff_t offset, unsigned long nr_segs); struct page* (*get_xip_page)(struct address_space *, sector_t, @@ -679,6 +680,12 @@ struct address_space_operations { need to ensure this. Possibly it can clear the PageUptodate bit if it cannot free private data yet. + freepage: freepage is called once the page is no longer visible in + the page cache in order to allow the cleanup of any private + data. Since it may be called by the memory reclaimer, it + should not assume that the original address_space mapping still + exists, and it should not block. + direct_IO: called by the generic read/write routines to perform direct_IO - that is IO requests which bypass the page cache and transfer data directly between the storage and the diff --git a/include/linux/fs.h b/include/linux/fs.h index c9e06cc70dad..090f0eacde29 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -602,6 +602,7 @@ struct address_space_operations { sector_t (*bmap)(struct address_space *, sector_t); void (*invalidatepage) (struct page *, unsigned long); int (*releasepage) (struct page *, gfp_t); + void (*freepage)(struct page *); ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov, loff_t offset, unsigned long nr_segs); int (*get_xip_mem)(struct address_space *, pgoff_t, int, diff --git a/mm/filemap.c b/mm/filemap.c index ea89840fc65f..6b9aee20f242 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -143,13 +143,18 @@ void __remove_from_page_cache(struct page *page) void remove_from_page_cache(struct page *page) { struct address_space *mapping = page->mapping; + void (*freepage)(struct page *); BUG_ON(!PageLocked(page)); + freepage = mapping->a_ops->freepage; spin_lock_irq(&mapping->tree_lock); __remove_from_page_cache(page); spin_unlock_irq(&mapping->tree_lock); mem_cgroup_uncharge_cache_page(page); + + if (freepage) + freepage(page); } EXPORT_SYMBOL(remove_from_page_cache); diff --git a/mm/truncate.c b/mm/truncate.c index ba887bff48c5..3c2d5ddfa0d4 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -390,6 +390,10 @@ invalidate_complete_page2(struct address_space *mapping, struct page *page) __remove_from_page_cache(page); spin_unlock_irq(&mapping->tree_lock); mem_cgroup_uncharge_cache_page(page); + + if (mapping->a_ops->freepage) + mapping->a_ops->freepage(page); + page_cache_release(page); /* pagecache ref */ return 1; failed: diff --git a/mm/vmscan.c b/mm/vmscan.c index d31d7ce52c0e..9ca587c69274 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -494,9 +494,16 @@ static int __remove_mapping(struct address_space *mapping, struct page *page) spin_unlock_irq(&mapping->tree_lock); swapcache_free(swap, page); } else { + void (*freepage)(struct page *); + + freepage = mapping->a_ops->freepage; + __remove_from_page_cache(page); spin_unlock_irq(&mapping->tree_lock); mem_cgroup_uncharge_cache_page(page); + + if (freepage != NULL) + freepage(page); } return 1; -- cgit v1.2.3 From 11de3b11e08cac26d59e88efaf4e316701883552 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 1 Dec 2010 14:17:06 -0500 Subject: NFS: Fix a memory leak in nfs_readdir We need to ensure that the entries in the nfs_cache_array get cleared when the page is removed from the page cache. To do so, we use the freepage address_space operation. Change nfs_readdir_clear_array to use kmap_atomic(), so that the function can be safely called from all contexts. Finally, modify the cache_page_release helper to call nfs_readdir_clear_array directly, when dealing with an anonymous page from 'uncached_readdir'. Signed-off-by: Trond Myklebust --- fs/nfs/dir.c | 18 +++++++++--------- fs/nfs/inode.c | 1 + include/linux/nfs_fs.h | 1 + 3 files changed, 11 insertions(+), 9 deletions(-) (limited to 'include') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index e03537ff9350..d529e0e99efa 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -57,7 +57,7 @@ static int nfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *); static int nfs_fsync_dir(struct file *, int); static loff_t nfs_llseek_dir(struct file *, loff_t, int); -static int nfs_readdir_clear_array(struct page*, gfp_t); +static void nfs_readdir_clear_array(struct page*); const struct file_operations nfs_dir_operations = { .llseek = nfs_llseek_dir, @@ -83,8 +83,8 @@ const struct inode_operations nfs_dir_inode_operations = { .setattr = nfs_setattr, }; -const struct address_space_operations nfs_dir_addr_space_ops = { - .releasepage = nfs_readdir_clear_array, +const struct address_space_operations nfs_dir_aops = { + .freepage = nfs_readdir_clear_array, }; #ifdef CONFIG_NFS_V3 @@ -214,17 +214,15 @@ void nfs_readdir_release_array(struct page *page) * we are freeing strings created by nfs_add_to_readdir_array() */ static -int nfs_readdir_clear_array(struct page *page, gfp_t mask) +void nfs_readdir_clear_array(struct page *page) { - struct nfs_cache_array *array = nfs_readdir_get_array(page); + struct nfs_cache_array *array; int i; - if (IS_ERR(array)) - return PTR_ERR(array); + array = kmap_atomic(page, KM_USER0); for (i = 0; i < array->size; i++) kfree(array->array[i].string.name); - nfs_readdir_release_array(page); - return 0; + kunmap_atomic(array, KM_USER0); } /* @@ -639,6 +637,8 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page* page) static void cache_page_release(nfs_readdir_descriptor_t *desc) { + if (!desc->page->mapping) + nfs_readdir_clear_array(desc->page); page_cache_release(desc->page); desc->page = NULL; } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 314f57164602..e67e31c73416 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -289,6 +289,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) } else if (S_ISDIR(inode->i_mode)) { inode->i_op = NFS_SB(sb)->nfs_client->rpc_ops->dir_inode_ops; inode->i_fop = &nfs_dir_operations; + inode->i_data.a_ops = &nfs_dir_aops; if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS)) set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags); /* Deal with crossing mountpoints */ diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index c66fdb7d6998..29d504d5d1c3 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -401,6 +401,7 @@ extern const struct inode_operations nfs3_file_inode_operations; #endif /* CONFIG_NFS_V3 */ extern const struct file_operations nfs_file_operations; extern const struct address_space_operations nfs_file_aops; +extern const struct address_space_operations nfs_dir_aops; static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) { -- cgit v1.2.3 From 64141da587241301ce8638cc945f8b67853156ec Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 2 Dec 2010 14:31:18 -0800 Subject: vmalloc: eagerly clear ptes on vunmap On stock 2.6.37-rc4, running: # mount lilith:/export /mnt/lilith # find /mnt/lilith/ -type f -print0 | xargs -0 file crashes the machine fairly quickly under Xen. Often it results in oops messages, but the couple of times I tried just now, it just hung quietly and made Xen print some rude messages: (XEN) mm.c:2389:d80 Bad type (saw 7400000000000001 != exp 3000000000000000) for mfn 1d7058 (pfn 18fa7) (XEN) mm.c:964:d80 Attempt to create linear p.t. with write perms (XEN) mm.c:2389:d80 Bad type (saw 7400000000000010 != exp 1000000000000000) for mfn 1d2e04 (pfn 1d1fb) (XEN) mm.c:2965:d80 Error while pinning mfn 1d2e04 Which means the domain tried to map a pagetable page RW, which would allow it to map arbitrary memory, so Xen stopped it. This is because vm_unmap_ram() left some pages mapped in the vmalloc area after NFS had finished with them, and those pages got recycled as pagetable pages while still having these RW aliases. Removing those mappings immediately removes the Xen-visible aliases, and so it has no problem with those pages being reused as pagetable pages. Deferring the TLB flush doesn't upset Xen because it can flush the TLB itself as needed to maintain its invariants. When unmapping a region in the vmalloc space, clear the ptes immediately. There's no point in deferring this because there's no amortization benefit. The TLBs are left dirty, and they are flushed lazily to amortize the cost of the IPIs. This specific motivation for this patch is an oops-causing regression since 2.6.36 when using NFS under Xen, triggered by the NFS client's use of vm_map_ram() introduced in 56e4ebf877b60 ("NFS: readdir with vmapped pages") . XFS also uses vm_map_ram() and could cause similar problems. Signed-off-by: Jeremy Fitzhardinge Cc: Nick Piggin Cc: Bryan Schumaker Cc: Trond Myklebust Cc: Alex Elder Cc: Dave Chinner Cc: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/xen/mmu.c | 2 -- include/linux/vmalloc.h | 2 -- mm/vmalloc.c | 28 +++++++++++++++++----------- 3 files changed, 17 insertions(+), 15 deletions(-) (limited to 'include') diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index a1feff9e59b6..44924e551fde 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -2415,8 +2415,6 @@ void __init xen_init_mmu_ops(void) x86_init.paging.pagetable_setup_done = xen_pagetable_setup_done; pv_mmu_ops = xen_mmu_ops; - vmap_lazy_unmap = false; - memset(dummy_mapping, 0xff, PAGE_SIZE); } diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index a03dcf62ca9d..44b54f619ac6 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -7,8 +7,6 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */ -extern bool vmap_lazy_unmap; - /* bits in flags of vmalloc's vm_struct below */ #define VM_IOREMAP 0x00000001 /* ioremap() and friends */ #define VM_ALLOC 0x00000002 /* vmalloc() */ diff --git a/mm/vmalloc.c b/mm/vmalloc.c index a3d66b3dc5cb..eb5cc7d00c5a 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -31,8 +31,6 @@ #include #include -bool vmap_lazy_unmap __read_mostly = true; - /*** Page table manipulation functions ***/ static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end) @@ -503,9 +501,6 @@ static unsigned long lazy_max_pages(void) { unsigned int log; - if (!vmap_lazy_unmap) - return 0; - log = fls(num_online_cpus()); return log * (32UL * 1024 * 1024 / PAGE_SIZE); @@ -566,7 +561,6 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end, if (va->va_end > *end) *end = va->va_end; nr += (va->va_end - va->va_start) >> PAGE_SHIFT; - unmap_vmap_area(va); list_add_tail(&va->purge_list, &valist); va->flags |= VM_LAZY_FREEING; va->flags &= ~VM_LAZY_FREE; @@ -611,10 +605,11 @@ static void purge_vmap_area_lazy(void) } /* - * Free and unmap a vmap area, caller ensuring flush_cache_vunmap had been - * called for the correct range previously. + * Free a vmap area, caller ensuring that the area has been unmapped + * and flush_cache_vunmap had been called for the correct range + * previously. */ -static void free_unmap_vmap_area_noflush(struct vmap_area *va) +static void free_vmap_area_noflush(struct vmap_area *va) { va->flags |= VM_LAZY_FREE; atomic_add((va->va_end - va->va_start) >> PAGE_SHIFT, &vmap_lazy_nr); @@ -622,6 +617,16 @@ static void free_unmap_vmap_area_noflush(struct vmap_area *va) try_purge_vmap_area_lazy(); } +/* + * Free and unmap a vmap area, caller ensuring flush_cache_vunmap had been + * called for the correct range previously. + */ +static void free_unmap_vmap_area_noflush(struct vmap_area *va) +{ + unmap_vmap_area(va); + free_vmap_area_noflush(va); +} + /* * Free and unmap a vmap area */ @@ -798,7 +803,7 @@ static void free_vmap_block(struct vmap_block *vb) spin_unlock(&vmap_block_tree_lock); BUG_ON(tmp != vb); - free_unmap_vmap_area_noflush(vb->va); + free_vmap_area_noflush(vb->va); call_rcu(&vb->rcu_head, rcu_free_vb); } @@ -936,6 +941,8 @@ static void vb_free(const void *addr, unsigned long size) rcu_read_unlock(); BUG_ON(!vb); + vunmap_page_range((unsigned long)addr, (unsigned long)addr + size); + spin_lock(&vb->lock); BUG_ON(bitmap_allocate_region(vb->dirty_map, offset >> PAGE_SHIFT, order)); @@ -988,7 +995,6 @@ void vm_unmap_aliases(void) s = vb->va->va_start + (i << PAGE_SHIFT); e = vb->va->va_start + (j << PAGE_SHIFT); - vunmap_page_range(s, e); flush = 1; if (s < start) -- cgit v1.2.3 From 20d6c96b5f1cad5c5da4641945ec17a1d9a1afc8 Mon Sep 17 00:00:00 2001 From: KOSAKI Motohiro Date: Thu, 2 Dec 2010 14:31:19 -0800 Subject: mem-hotplug: introduce {un}lock_memory_hotplug() Presently hwpoison is using lock_system_sleep() to prevent a race with memory hotplug. However lock_system_sleep() is a no-op if CONFIG_HIBERNATION=n. Therefore we need a new lock. Signed-off-by: KOSAKI Motohiro Cc: Andi Kleen Cc: Kamezawa Hiroyuki Suggested-by: Hugh Dickins Acked-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 6 ++++++ mm/memory-failure.c | 8 ++++---- mm/memory_hotplug.c | 31 ++++++++++++++++++++++++------- 3 files changed, 34 insertions(+), 11 deletions(-) (limited to 'include') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 4307231bd22f..31c237a00c48 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -161,6 +161,9 @@ extern void register_page_bootmem_info_node(struct pglist_data *pgdat); extern void put_page_bootmem(struct page *page); #endif +void lock_memory_hotplug(void); +void unlock_memory_hotplug(void); + #else /* ! CONFIG_MEMORY_HOTPLUG */ /* * Stub functions for when hotplug is off @@ -192,6 +195,9 @@ static inline void register_page_bootmem_info_node(struct pglist_data *pgdat) { } +static inline void lock_memory_hotplug(void) {} +static inline void unlock_memory_hotplug(void) {} + #endif /* ! CONFIG_MEMORY_HOTPLUG */ #ifdef CONFIG_MEMORY_HOTREMOVE diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 124324134ff6..46ab2c044b0e 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -51,6 +51,7 @@ #include #include #include +#include #include "internal.h" int sysctl_memory_failure_early_kill __read_mostly = 0; @@ -1230,11 +1231,10 @@ static int get_any_page(struct page *p, unsigned long pfn, int flags) return 1; /* - * The lock_system_sleep prevents a race with memory hotplug, - * because the isolation assumes there's only a single user. + * The lock_memory_hotplug prevents a race with memory hotplug. * This is a big hammer, a better would be nicer. */ - lock_system_sleep(); + lock_memory_hotplug(); /* * Isolate the page, so that it doesn't get reallocated if it @@ -1264,7 +1264,7 @@ static int get_any_page(struct page *p, unsigned long pfn, int flags) ret = 1; } unset_migratetype_isolate(p); - unlock_system_sleep(); + unlock_memory_hotplug(); return ret; } diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 9260314a221e..2c6523af5473 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -34,6 +34,23 @@ #include "internal.h" +DEFINE_MUTEX(mem_hotplug_mutex); + +void lock_memory_hotplug(void) +{ + mutex_lock(&mem_hotplug_mutex); + + /* for exclusive hibernation if CONFIG_HIBERNATION=y */ + lock_system_sleep(); +} + +void unlock_memory_hotplug(void) +{ + unlock_system_sleep(); + mutex_unlock(&mem_hotplug_mutex); +} + + /* add this memory to iomem resource */ static struct resource *register_memory_resource(u64 start, u64 size) { @@ -493,7 +510,7 @@ int mem_online_node(int nid) pg_data_t *pgdat; int ret; - lock_system_sleep(); + lock_memory_hotplug(); pgdat = hotadd_new_pgdat(nid, 0); if (pgdat) { ret = -ENOMEM; @@ -504,7 +521,7 @@ int mem_online_node(int nid) BUG_ON(ret); out: - unlock_system_sleep(); + unlock_memory_hotplug(); return ret; } @@ -516,7 +533,7 @@ int __ref add_memory(int nid, u64 start, u64 size) struct resource *res; int ret; - lock_system_sleep(); + lock_memory_hotplug(); res = register_memory_resource(start, size); ret = -EEXIST; @@ -563,7 +580,7 @@ error: release_memory_resource(res); out: - unlock_system_sleep(); + unlock_memory_hotplug(); return ret; } EXPORT_SYMBOL_GPL(add_memory); @@ -791,7 +808,7 @@ static int offline_pages(unsigned long start_pfn, if (!test_pages_in_a_zone(start_pfn, end_pfn)) return -EINVAL; - lock_system_sleep(); + lock_memory_hotplug(); zone = page_zone(pfn_to_page(start_pfn)); node = zone_to_nid(zone); @@ -880,7 +897,7 @@ repeat: writeback_set_ratelimit(); memory_notify(MEM_OFFLINE, &arg); - unlock_system_sleep(); + unlock_memory_hotplug(); return 0; failed_removal: @@ -891,7 +908,7 @@ failed_removal: undo_isolate_page_range(start_pfn, end_pfn); out: - unlock_system_sleep(); + unlock_memory_hotplug(); return ret; } -- cgit v1.2.3 From bbf0c6b3620b3872929ef7d3c392ce436889110f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 5 Dec 2010 11:30:40 +0100 Subject: drm/i915: announce to userspace that the bsd ring is coherent Otherwise we can't really fix the abi-braindeadness of forcing libva to manually wait for rendering when switching rings. Which in turn makes implementing hw semaphores a pointless exercise (at least for ironlake). [Also added the relaxed fencing param to explain the jump in numbering - relaxed fencing is in -next.] Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_dma.c | 3 +++ include/drm/i915_drm.h | 2 ++ 2 files changed, 5 insertions(+) (limited to 'include') diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 7a26f4dd21ae..e6800819bca8 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -767,6 +767,9 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_HAS_BLT: value = HAS_BLT(dev); break; + case I915_PARAM_HAS_COHERENT_RINGS: + value = 1; + break; default: DRM_DEBUG_DRIVER("Unknown parameter %d\n", param->param); diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h index 8c641bed9bbd..a2776e2807a4 100644 --- a/include/drm/i915_drm.h +++ b/include/drm/i915_drm.h @@ -287,6 +287,8 @@ typedef struct drm_i915_irq_wait { #define I915_PARAM_HAS_EXECBUF2 9 #define I915_PARAM_HAS_BSD 10 #define I915_PARAM_HAS_BLT 11 +#define I915_PARAM_HAS_RELAXED_FENCING 12 +#define I915_PARAM_HAS_COHERENT_RINGS 13 typedef struct drm_i915_getparam { int param; -- cgit v1.2.3 From 3fcc0afbb9c93f3599ba03273e59915670b6c2c2 Mon Sep 17 00:00:00 2001 From: Uk Kim Date: Sun, 5 Dec 2010 17:32:16 +0900 Subject: ASoC: Fix off by one error in WM8994 EQ register bank size Signed-off-by: Uk Kim Acked-by: Liam Girdwood Signed-off-by: Mark Brown Cc: stable@kernel.org --- include/linux/mfd/wm8994/pdata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 5c51f367c061..add8a1b8bcf0 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -29,7 +29,7 @@ struct wm8994_ldo_pdata { #define WM8994_CONFIGURE_GPIO 0x8000 #define WM8994_DRC_REGS 5 -#define WM8994_EQ_REGS 19 +#define WM8994_EQ_REGS 20 /** * DRC configurations are specified with a label and a set of register -- cgit v1.2.3 From 46bcf14f44d8f31ecfdc8b6708ec15a3b33316d9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 6 Dec 2010 09:29:43 -0800 Subject: filter: fix sk_filter rcu handling Pavel Emelyanov tried to fix a race between sk_filter_(de|at)tach and sk_clone() in commit 47e958eac280c263397 Problem is we can have several clones sharing a common sk_filter, and these clones might want to sk_filter_attach() their own filters at the same time, and can overwrite old_filter->rcu, corrupting RCU queues. We can not use filter->rcu without being sure no other thread could do the same thing. Switch code to a more conventional ref-counting technique : Do the atomic decrement immediately and queue one rcu call back when last reference is released. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/sock.h | 4 +++- net/core/filter.c | 19 ++++++------------- 2 files changed, 9 insertions(+), 14 deletions(-) (limited to 'include') diff --git a/include/net/sock.h b/include/net/sock.h index a6338d039857..659d968d95c5 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1155,6 +1155,8 @@ extern void sk_common_release(struct sock *sk); /* Initialise core socket variables */ extern void sock_init_data(struct socket *sock, struct sock *sk); +extern void sk_filter_release_rcu(struct rcu_head *rcu); + /** * sk_filter_release - release a socket filter * @fp: filter to remove @@ -1165,7 +1167,7 @@ extern void sock_init_data(struct socket *sock, struct sock *sk); static inline void sk_filter_release(struct sk_filter *fp) { if (atomic_dec_and_test(&fp->refcnt)) - kfree(fp); + call_rcu_bh(&fp->rcu, sk_filter_release_rcu); } static inline void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp) diff --git a/net/core/filter.c b/net/core/filter.c index c1ee800bc080..ae21a0d3c4a2 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -589,23 +589,16 @@ int sk_chk_filter(struct sock_filter *filter, int flen) EXPORT_SYMBOL(sk_chk_filter); /** - * sk_filter_rcu_release - Release a socket filter by rcu_head + * sk_filter_release_rcu - Release a socket filter by rcu_head * @rcu: rcu_head that contains the sk_filter to free */ -static void sk_filter_rcu_release(struct rcu_head *rcu) +void sk_filter_release_rcu(struct rcu_head *rcu) { struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu); - sk_filter_release(fp); -} - -static void sk_filter_delayed_uncharge(struct sock *sk, struct sk_filter *fp) -{ - unsigned int size = sk_filter_len(fp); - - atomic_sub(size, &sk->sk_omem_alloc); - call_rcu_bh(&fp->rcu, sk_filter_rcu_release); + kfree(fp); } +EXPORT_SYMBOL(sk_filter_release_rcu); /** * sk_attach_filter - attach a socket filter @@ -649,7 +642,7 @@ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk) rcu_assign_pointer(sk->sk_filter, fp); if (old_fp) - sk_filter_delayed_uncharge(sk, old_fp); + sk_filter_uncharge(sk, old_fp); return 0; } EXPORT_SYMBOL_GPL(sk_attach_filter); @@ -663,7 +656,7 @@ int sk_detach_filter(struct sock *sk) sock_owned_by_user(sk)); if (filter) { rcu_assign_pointer(sk->sk_filter, NULL); - sk_filter_delayed_uncharge(sk, filter); + sk_filter_uncharge(sk, filter); ret = 0; } return ret; -- cgit v1.2.3 From c9e664f1fdf34aa8cede047b206deaa8f1945af0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 3 Dec 2010 22:57:45 +0100 Subject: PM / Hibernate: Fix memory corruption related to swap There is a problem that swap pages allocated before the creation of a hibernation image can be released and used for storing the contents of different memory pages while the image is being saved. Since the kernel stored in the image doesn't know of that, it causes memory corruption to occur after resume from hibernation, especially on systems with relatively small RAM that need to swap often. This issue can be addressed by keeping the GFP_IOFS bits clear in gfp_allowed_mask during the entire hibernation, including the saving of the image, until the system is finally turned off or the hibernation is aborted. Unfortunately, for this purpose it's necessary to rework the way in which the hibernate and suspend code manipulates gfp_allowed_mask. This change is based on an earlier patch from Hugh Dickins. Signed-off-by: Rafael J. Wysocki Reported-by: Ondrej Zary Acked-by: Hugh Dickins Reviewed-by: KAMEZAWA Hiroyuki Cc: stable@kernel.org --- include/linux/gfp.h | 4 ++-- kernel/power/hibernate.c | 22 ++++++++++++---------- kernel/power/suspend.c | 5 ++--- kernel/power/user.c | 2 ++ mm/page_alloc.c | 19 ++++++++++++------- 5 files changed, 30 insertions(+), 22 deletions(-) (limited to 'include') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index e8713d55360a..f54adfcbec9c 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -360,7 +360,7 @@ void drain_local_pages(void *dummy); extern gfp_t gfp_allowed_mask; -extern void set_gfp_allowed_mask(gfp_t mask); -extern gfp_t clear_gfp_allowed_mask(gfp_t mask); +extern void pm_restrict_gfp_mask(void); +extern void pm_restore_gfp_mask(void); #endif /* __LINUX_GFP_H */ diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 657272e91d0a..048d0b514831 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -327,7 +327,6 @@ static int create_image(int platform_mode) int hibernation_snapshot(int platform_mode) { int error; - gfp_t saved_mask; error = platform_begin(platform_mode); if (error) @@ -339,7 +338,7 @@ int hibernation_snapshot(int platform_mode) goto Close; suspend_console(); - saved_mask = clear_gfp_allowed_mask(GFP_IOFS); + pm_restrict_gfp_mask(); error = dpm_suspend_start(PMSG_FREEZE); if (error) goto Recover_platform; @@ -348,7 +347,10 @@ int hibernation_snapshot(int platform_mode) goto Recover_platform; error = create_image(platform_mode); - /* Control returns here after successful restore */ + /* + * Control returns here (1) after the image has been created or the + * image creation has failed and (2) after a successful restore. + */ Resume_devices: /* We may need to release the preallocated image pages here. */ @@ -357,7 +359,10 @@ int hibernation_snapshot(int platform_mode) dpm_resume_end(in_suspend ? (error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE); - set_gfp_allowed_mask(saved_mask); + + if (error || !in_suspend) + pm_restore_gfp_mask(); + resume_console(); Close: platform_end(platform_mode); @@ -452,17 +457,16 @@ static int resume_target_kernel(bool platform_mode) int hibernation_restore(int platform_mode) { int error; - gfp_t saved_mask; pm_prepare_console(); suspend_console(); - saved_mask = clear_gfp_allowed_mask(GFP_IOFS); + pm_restrict_gfp_mask(); error = dpm_suspend_start(PMSG_QUIESCE); if (!error) { error = resume_target_kernel(platform_mode); dpm_resume_end(PMSG_RECOVER); } - set_gfp_allowed_mask(saved_mask); + pm_restore_gfp_mask(); resume_console(); pm_restore_console(); return error; @@ -476,7 +480,6 @@ int hibernation_restore(int platform_mode) int hibernation_platform_enter(void) { int error; - gfp_t saved_mask; if (!hibernation_ops) return -ENOSYS; @@ -492,7 +495,6 @@ int hibernation_platform_enter(void) entering_platform_hibernation = true; suspend_console(); - saved_mask = clear_gfp_allowed_mask(GFP_IOFS); error = dpm_suspend_start(PMSG_HIBERNATE); if (error) { if (hibernation_ops->recover) @@ -536,7 +538,6 @@ int hibernation_platform_enter(void) Resume_devices: entering_platform_hibernation = false; dpm_resume_end(PMSG_RESTORE); - set_gfp_allowed_mask(saved_mask); resume_console(); Close: @@ -646,6 +647,7 @@ int hibernate(void) swsusp_free(); if (!error) power_down(); + pm_restore_gfp_mask(); } else { pr_debug("PM: Image restored successfully.\n"); } diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 7335952ee473..ecf770509d0d 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -197,7 +197,6 @@ static int suspend_enter(suspend_state_t state) int suspend_devices_and_enter(suspend_state_t state) { int error; - gfp_t saved_mask; if (!suspend_ops) return -ENOSYS; @@ -208,7 +207,7 @@ int suspend_devices_and_enter(suspend_state_t state) goto Close; } suspend_console(); - saved_mask = clear_gfp_allowed_mask(GFP_IOFS); + pm_restrict_gfp_mask(); suspend_test_start(); error = dpm_suspend_start(PMSG_SUSPEND); if (error) { @@ -225,7 +224,7 @@ int suspend_devices_and_enter(suspend_state_t state) suspend_test_start(); dpm_resume_end(PMSG_RESUME); suspend_test_finish("resume devices"); - set_gfp_allowed_mask(saved_mask); + pm_restore_gfp_mask(); resume_console(); Close: if (suspend_ops->end) diff --git a/kernel/power/user.c b/kernel/power/user.c index e819e17877ca..1b2ea31e6bd8 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -263,6 +263,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, case SNAPSHOT_UNFREEZE: if (!data->frozen || data->ready) break; + pm_restore_gfp_mask(); thaw_processes(); usermodehelper_enable(); data->frozen = 0; @@ -275,6 +276,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, error = -EPERM; break; } + pm_restore_gfp_mask(); error = hibernation_snapshot(data->platform_support); if (!error) error = put_user(in_suspend, (int __user *)arg); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e4092704c1a9..ff7e15872398 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -104,19 +104,24 @@ gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK; * only be modified with pm_mutex held, unless the suspend/hibernate code is * guaranteed not to run in parallel with that modification). */ -void set_gfp_allowed_mask(gfp_t mask) + +static gfp_t saved_gfp_mask; + +void pm_restore_gfp_mask(void) { WARN_ON(!mutex_is_locked(&pm_mutex)); - gfp_allowed_mask = mask; + if (saved_gfp_mask) { + gfp_allowed_mask = saved_gfp_mask; + saved_gfp_mask = 0; + } } -gfp_t clear_gfp_allowed_mask(gfp_t mask) +void pm_restrict_gfp_mask(void) { - gfp_t ret = gfp_allowed_mask; - WARN_ON(!mutex_is_locked(&pm_mutex)); - gfp_allowed_mask &= ~mask; - return ret; + WARN_ON(saved_gfp_mask); + saved_gfp_mask = gfp_allowed_mask; + gfp_allowed_mask &= ~GFP_IOFS; } #endif /* CONFIG_PM_SLEEP */ -- cgit v1.2.3 From 0e7d0c860a0dee49dacb7bbb248d1eba637075ad Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 6 Dec 2010 17:14:47 -0800 Subject: Input: add input driver for polled GPIO buttons The existing gpio-keys driver can be usable only for GPIO lines with interrupt support. Several devices have buttons connected to a GPIO line which is not capable to generate interrupts. This patch adds a new input driver using the generic GPIO layer and the input-polldev to support such buttons. [Ben Gardiner Signed-off-by: Ben Gardiner Tested-by: Ben Gardiner Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/Kconfig | 16 ++ drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/gpio_keys_polled.c | 261 ++++++++++++++++++++++++++++++ include/linux/gpio_keys.h | 2 + 4 files changed, 280 insertions(+) create mode 100644 drivers/input/keyboard/gpio_keys_polled.c (limited to 'include') diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index b8c51b9781db..3a87f3ba5f75 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -179,6 +179,22 @@ config KEYBOARD_GPIO To compile this driver as a module, choose M here: the module will be called gpio_keys. +config KEYBOARD_GPIO_POLLED + tristate "Polled GPIO buttons" + depends on GENERIC_GPIO + select INPUT_POLLDEV + help + This driver implements support for buttons connected + to GPIO pins that are not capable of generating interrupts. + + Say Y here if your device has buttons connected + directly to such GPIO pins. Your board-specific + setup logic must also provide a platform device, + with configuration data saying which GPIOs are used. + + To compile this driver as a module, choose M here: the + module will be called gpio_keys_polled. + config KEYBOARD_TCA6416 tristate "TCA6416 Keypad Support" depends on I2C diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index a34452e8ebe2..622de73a445d 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_KEYBOARD_BFIN) += bf54x-keys.o obj-$(CONFIG_KEYBOARD_DAVINCI) += davinci_keyscan.o obj-$(CONFIG_KEYBOARD_EP93XX) += ep93xx_keypad.o obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o +obj-$(CONFIG_KEYBOARD_GPIO_POLLED) += gpio_keys_polled.o obj-$(CONFIG_KEYBOARD_TCA6416) += tca6416-keypad.o obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c new file mode 100644 index 000000000000..4c17aff20657 --- /dev/null +++ b/drivers/input/keyboard/gpio_keys_polled.c @@ -0,0 +1,261 @@ +/* + * Driver for buttons on GPIO lines not capable of generating interrupts + * + * Copyright (C) 2007-2010 Gabor Juhos + * Copyright (C) 2010 Nuno Goncalves + * + * This file was based on: /drivers/input/misc/cobalt_btns.c + * Copyright (C) 2007 Yoichi Yuasa + * + * also was based on: /drivers/input/keyboard/gpio_keys.c + * Copyright 2005 Phil Blundell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRV_NAME "gpio-keys-polled" + +struct gpio_keys_button_data { + int last_state; + int count; + int threshold; + int can_sleep; +}; + +struct gpio_keys_polled_dev { + struct input_polled_dev *poll_dev; + struct device *dev; + struct gpio_keys_platform_data *pdata; + struct gpio_keys_button_data data[0]; +}; + +static void gpio_keys_polled_check_state(struct input_dev *input, + struct gpio_keys_button *button, + struct gpio_keys_button_data *bdata) +{ + int state; + + if (bdata->can_sleep) + state = !!gpio_get_value_cansleep(button->gpio); + else + state = !!gpio_get_value(button->gpio); + + if (state != bdata->last_state) { + unsigned int type = button->type ?: EV_KEY; + + input_event(input, type, button->code, + !!(state ^ button->active_low)); + input_sync(input); + bdata->count = 0; + bdata->last_state = state; + } +} + +static void gpio_keys_polled_poll(struct input_polled_dev *dev) +{ + struct gpio_keys_polled_dev *bdev = dev->private; + struct gpio_keys_platform_data *pdata = bdev->pdata; + struct input_dev *input = dev->input; + int i; + + for (i = 0; i < bdev->pdata->nbuttons; i++) { + struct gpio_keys_button_data *bdata = &bdev->data[i]; + + if (bdata->count < bdata->threshold) + bdata->count++; + else + gpio_keys_polled_check_state(input, &pdata->buttons[i], + bdata); + } +} + +static void gpio_keys_polled_open(struct input_polled_dev *dev) +{ + struct gpio_keys_polled_dev *bdev = dev->private; + struct gpio_keys_platform_data *pdata = bdev->pdata; + + if (pdata->enable) + pdata->enable(bdev->dev); +} + +static void gpio_keys_polled_close(struct input_polled_dev *dev) +{ + struct gpio_keys_polled_dev *bdev = dev->private; + struct gpio_keys_platform_data *pdata = bdev->pdata; + + if (pdata->disable) + pdata->disable(bdev->dev); +} + +static int __devinit gpio_keys_polled_probe(struct platform_device *pdev) +{ + struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; + struct device *dev = &pdev->dev; + struct gpio_keys_polled_dev *bdev; + struct input_polled_dev *poll_dev; + struct input_dev *input; + int error; + int i; + + if (!pdata || !pdata->poll_interval) + return -EINVAL; + + bdev = kzalloc(sizeof(struct gpio_keys_polled_dev) + + pdata->nbuttons * sizeof(struct gpio_keys_button_data), + GFP_KERNEL); + if (!bdev) { + dev_err(dev, "no memory for private data\n"); + return -ENOMEM; + } + + poll_dev = input_allocate_polled_device(); + if (!poll_dev) { + dev_err(dev, "no memory for polled device\n"); + error = -ENOMEM; + goto err_free_bdev; + } + + poll_dev->private = bdev; + poll_dev->poll = gpio_keys_polled_poll; + poll_dev->poll_interval = pdata->poll_interval; + poll_dev->open = gpio_keys_polled_open; + poll_dev->close = gpio_keys_polled_close; + + input = poll_dev->input; + + input->evbit[0] = BIT(EV_KEY); + input->name = pdev->name; + input->phys = DRV_NAME"/input0"; + input->dev.parent = &pdev->dev; + + input->id.bustype = BUS_HOST; + input->id.vendor = 0x0001; + input->id.product = 0x0001; + input->id.version = 0x0100; + + for (i = 0; i < pdata->nbuttons; i++) { + struct gpio_keys_button *button = &pdata->buttons[i]; + struct gpio_keys_button_data *bdata = &bdev->data[i]; + unsigned int gpio = button->gpio; + unsigned int type = button->type ?: EV_KEY; + + if (button->wakeup) { + dev_err(dev, DRV_NAME " does not support wakeup\n"); + error = -EINVAL; + goto err_free_gpio; + } + + error = gpio_request(gpio, + button->desc ? button->desc : DRV_NAME); + if (error) { + dev_err(dev, "unable to claim gpio %u, err=%d\n", + gpio, error); + goto err_free_gpio; + } + + error = gpio_direction_input(gpio); + if (error) { + dev_err(dev, + "unable to set direction on gpio %u, err=%d\n", + gpio, error); + goto err_free_gpio; + } + + bdata->can_sleep = gpio_cansleep(gpio); + bdata->last_state = -1; + bdata->threshold = DIV_ROUND_UP(button->debounce_interval, + pdata->poll_interval); + + input_set_capability(input, type, button->code); + } + + bdev->poll_dev = poll_dev; + bdev->dev = dev; + bdev->pdata = pdata; + platform_set_drvdata(pdev, bdev); + + error = input_register_polled_device(poll_dev); + if (error) { + dev_err(dev, "unable to register polled device, err=%d\n", + error); + goto err_free_gpio; + } + + /* report initial state of the buttons */ + for (i = 0; i < pdata->nbuttons; i++) + gpio_keys_polled_check_state(input, &pdata->buttons[i], + &bdev->data[i]); + + return 0; + +err_free_gpio: + while (--i >= 0) + gpio_free(pdata->buttons[i].gpio); + + input_free_polled_device(poll_dev); + +err_free_bdev: + kfree(bdev); + + platform_set_drvdata(pdev, NULL); + return error; +} + +static int __devexit gpio_keys_polled_remove(struct platform_device *pdev) +{ + struct gpio_keys_polled_dev *bdev = platform_get_drvdata(pdev); + struct gpio_keys_platform_data *pdata = bdev->pdata; + int i; + + input_unregister_polled_device(bdev->poll_dev); + + for (i = 0; i < pdata->nbuttons; i++) + gpio_free(pdata->buttons[i].gpio); + + input_free_polled_device(bdev->poll_dev); + + kfree(bdev); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static struct platform_driver gpio_keys_polled_driver = { + .probe = gpio_keys_polled_probe, + .remove = __devexit_p(gpio_keys_polled_remove), + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init gpio_keys_polled_init(void) +{ + return platform_driver_register(&gpio_keys_polled_driver); +} + +static void __exit gpio_keys_polled_exit(void) +{ + platform_driver_unregister(&gpio_keys_polled_driver); +} + +module_init(gpio_keys_polled_init); +module_exit(gpio_keys_polled_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gabor Juhos "); +MODULE_DESCRIPTION("Polled GPIO Buttons driver"); +MODULE_ALIAS("platform:" DRV_NAME); diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h index ce73a30113b4..dd1a56fbe924 100644 --- a/include/linux/gpio_keys.h +++ b/include/linux/gpio_keys.h @@ -16,6 +16,8 @@ struct gpio_keys_button { struct gpio_keys_platform_data { struct gpio_keys_button *buttons; int nbuttons; + unsigned int poll_interval; /* polling interval in msecs - + for polling driver only */ unsigned int rep:1; /* enable input subsystem auto repeat */ int (*enable)(struct device *dev); void (*disable)(struct device *dev); -- cgit v1.2.3 From 88d60c32765716289abeb362c44adf6c35c6824c Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Mon, 8 Nov 2010 18:19:22 -0500 Subject: fanotify: remove packed from access response message Since fanotify has decided to be careful about alignment and packing rather than rely on __attribute__((packed)) for multiarch support. Since this attribute isn't doing anything on fanotify_response we just drop it. This does not break API/ABI. Suggested-by: Tvrtko Ursulin Signed-off-by: Eric Paris --- include/linux/fanotify.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index 0f0121467fc4..bdbf9bb29b54 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -96,7 +96,7 @@ struct fanotify_event_metadata { struct fanotify_response { __s32 fd; __u32 response; -} __attribute__ ((packed)); +}; /* Legit userspace responses to a _PERM event */ #define FAN_ALLOW 0x01 -- cgit v1.2.3 From b1085ba80cd2784400a7beec3fda5099198ed01c Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Fri, 5 Nov 2010 17:05:27 +0100 Subject: fanotify: if set by user unset FMODE_NONOTIFY before fsnotify_perm() is called Unsetting FMODE_NONOTIFY in fsnotify_open() is too late, since fsnotify_perm() is called before. If FMODE_NONOTIFY is set fsnotify_perm() will skip permission checks, so a user can still disable permission checks by setting this flag in an open() call. This patch corrects this by unsetting the flag before fsnotify_perm is called. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- fs/namei.c | 3 +++ include/linux/fsnotify.h | 3 --- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/fs/namei.c b/fs/namei.c index 5362af9b7372..4ff7ca530533 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1748,6 +1748,9 @@ struct file *do_filp_open(int dfd, const char *pathname, if (!(open_flag & O_CREAT)) mode = 0; + /* Must never be set by userspace */ + open_flag &= ~FMODE_NONOTIFY; + /* * O_SYNC is implemented as __O_SYNC|O_DSYNC. As many places only * check for O_DSYNC if the need any syncing at all we enforce it's diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index 5c185fa27089..b10bcdeaef76 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -235,9 +235,6 @@ static inline void fsnotify_open(struct file *file) if (S_ISDIR(inode->i_mode)) mask |= FS_ISDIR; - /* FMODE_NONOTIFY must never be set from user */ - file->f_mode &= ~FMODE_NONOTIFY; - fsnotify_parent(path, NULL, mask); fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0); } -- cgit v1.2.3 From 09e5f14e57c70f9d357862bb56e57026c51092a1 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Fri, 19 Nov 2010 10:58:07 +0100 Subject: fanotify: on group destroy allow all waiters to bypass permission check When fanotify_release() is called, there may still be processes waiting for access permission. Currently only processes for which an event has already been queued into the groups access list will be woken up. Processes for which no event has been queued will continue to sleep and thus cause a deadlock when fsnotify_put_group() is called. Furthermore there is a race allowing further processes to be waiting on the access wait queue after wake_up (if they arrive before clear_marks_by_group() is called). This patch corrects this by setting a flag to inform processes that the group is about to be destroyed and thus not to wait for access permission. [additional changelog from eparis] Lets think about the 4 relevant code paths from the PoV of the 'operator' 'listener' 'responder' and 'closer'. Where operator is the process doing an action (like open/read) which could require permission. Listener is the task (or in this case thread) slated with reading from the fanotify file descriptor. The 'responder' is the thread responsible for responding to access requests. 'Closer' is the thread attempting to close the fanotify file descriptor. The 'operator' is going to end up in: fanotify_handle_event() get_response_from_access() (THIS BLOCKS WAITING ON USERSPACE) The 'listener' interesting code path fanotify_read() copy_event_to_user() prepare_for_access_response() (THIS CREATES AN fanotify_response_event) The 'responder' code path: fanotify_write() process_access_response() (REMOVE A fanotify_response_event, SET RESPONSE, WAKE UP 'operator') The 'closer': fanotify_release() (SUPPOSED TO CLEAN UP THE REST OF THIS MESS) What we have today is that in the closer we remove all of the fanotify_response_events and set a bit so no more response events are ever created in prepare_for_access_response(). The bug is that we never wake all of the operators up and tell them to move along. You fix that in fanotify_get_response_from_access(). You also fix other operators which haven't gotten there yet. So I agree that's a good fix. [/additional changelog from eparis] [remove additional changes to minimize patch size] [move initialization so it was inside CONFIG_FANOTIFY_PERMISSION] Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- fs/notify/fanotify/fanotify.c | 6 +++++- fs/notify/fanotify/fanotify_user.c | 5 +++-- include/linux/fsnotify_backend.h | 2 +- 3 files changed, 9 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index b04f88eed09e..f35794b97e8e 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -92,7 +92,11 @@ static int fanotify_get_response_from_access(struct fsnotify_group *group, pr_debug("%s: group=%p event=%p\n", __func__, group, event); - wait_event(group->fanotify_data.access_waitq, event->response); + wait_event(group->fanotify_data.access_waitq, event->response || + atomic_read(&group->fanotify_data.bypass_perm)); + + if (!event->response) /* bypass_perm set */ + return 0; /* userspace responded, convert to something usable */ spin_lock(&event->lock); diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 480434c5ee5f..01fffe62a2d4 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -200,7 +200,7 @@ static int prepare_for_access_response(struct fsnotify_group *group, mutex_lock(&group->fanotify_data.access_mutex); - if (group->fanotify_data.bypass_perm) { + if (atomic_read(&group->fanotify_data.bypass_perm)) { mutex_unlock(&group->fanotify_data.access_mutex); kmem_cache_free(fanotify_response_event_cache, re); event->response = FAN_ALLOW; @@ -390,7 +390,7 @@ static int fanotify_release(struct inode *ignored, struct file *file) mutex_lock(&group->fanotify_data.access_mutex); - group->fanotify_data.bypass_perm = true; + atomic_inc(&group->fanotify_data.bypass_perm); list_for_each_entry_safe(re, lre, &group->fanotify_data.access_list, list) { pr_debug("%s: found group=%p re=%p event=%p\n", __func__, group, @@ -703,6 +703,7 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags) mutex_init(&group->fanotify_data.access_mutex); init_waitqueue_head(&group->fanotify_data.access_waitq); INIT_LIST_HEAD(&group->fanotify_data.access_list); + atomic_set(&group->fanotify_data.bypass_perm, 0); #endif switch (flags & FAN_ALL_CLASS_BITS) { case FAN_CLASS_NOTIF: diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 0a68f924f06f..7380763595d3 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -166,7 +166,7 @@ struct fsnotify_group { struct mutex access_mutex; struct list_head access_list; wait_queue_head_t access_waitq; - bool bypass_perm; /* protected by access_mutex */ + atomic_t bypass_perm; #endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ int f_flags; unsigned int max_marks; -- cgit v1.2.3 From e9a3854fd4ff3907e6c200a3980e19365ee695e9 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Wed, 24 Nov 2010 18:22:09 +0100 Subject: fanotify: Introduce FAN_NOFD FAN_NOFD is used in fanotify events that do not provide an open file descriptor (like the overflow_event). Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fanotify.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index bdbf9bb29b54..c73224315aee 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -101,6 +101,8 @@ struct fanotify_response { /* Legit userspace responses to a _PERM event */ #define FAN_ALLOW 0x01 #define FAN_DENY 0x02 +/* No fd set in event */ +#define FAN_NOFD -1 /* Helper functions to deal with fanotify_event_metadata buffers */ #define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata)) -- cgit v1.2.3 From 2df485a774ba59c3f43bfe84107672c1d9b731a0 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 7 Dec 2010 22:39:17 -0500 Subject: nfs: remove extraneous and problematic calls to nfs_clear_request When a nfs_page is freed, nfs_free_request is called which also calls nfs_clear_request to clean out the lock and open contexts and free the pagecache page. However, a couple of places in the nfs code call nfs_clear_request themselves. What happens here if the refcount on the request is still high? We'll be releasing contexts and freeing pointers while the request is possibly still in use. Remove those bare calls to nfs_clear_context. That should only be done when the request is being freed. Note that when doing this, we need to watch out for tests of req->wb_page. Previously, nfs_set_page_tag_locked() and nfs_clear_page_tag_locked() would check the value of req->wb_page to figure out if the page is mapped into the nfsi->nfs_page_tree. We now indicate the page is mapped using the new bit PG_MAPPED in req->wb_flags . Reported-by: Jeff Layton Signed-off-by: Trond Myklebust --- fs/nfs/pagelist.c | 4 ++-- fs/nfs/read.c | 1 - fs/nfs/write.c | 3 ++- include/linux/nfs_page.h | 1 + 4 files changed, 5 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 137b549e63db..b68536cc9046 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -115,7 +115,7 @@ int nfs_set_page_tag_locked(struct nfs_page *req) { if (!nfs_lock_request_dontget(req)) return 0; - if (req->wb_page != NULL) + if (test_bit(PG_MAPPED, &req->wb_flags)) radix_tree_tag_set(&NFS_I(req->wb_context->path.dentry->d_inode)->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); return 1; } @@ -125,7 +125,7 @@ int nfs_set_page_tag_locked(struct nfs_page *req) */ void nfs_clear_page_tag_locked(struct nfs_page *req) { - if (req->wb_page != NULL) { + if (test_bit(PG_MAPPED, &req->wb_flags)) { struct inode *inode = req->wb_context->path.dentry->d_inode; struct nfs_inode *nfsi = NFS_I(inode); diff --git a/fs/nfs/read.c b/fs/nfs/read.c index e4b62c6f5a6e..aedcaa7f291f 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -152,7 +152,6 @@ static void nfs_readpage_release(struct nfs_page *req) (long long)NFS_FILEID(req->wb_context->path.dentry->d_inode), req->wb_bytes, (long long)req_offset(req)); - nfs_clear_request(req); nfs_release_request(req); } diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 4c14c17a5276..10d648ea128b 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -390,6 +390,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req) if (nfs_have_delegation(inode, FMODE_WRITE)) nfsi->change_attr++; } + set_bit(PG_MAPPED, &req->wb_flags); SetPagePrivate(req->wb_page); set_page_private(req->wb_page, (unsigned long)req); nfsi->npages++; @@ -415,6 +416,7 @@ static void nfs_inode_remove_request(struct nfs_page *req) spin_lock(&inode->i_lock); set_page_private(req->wb_page, 0); ClearPagePrivate(req->wb_page); + clear_bit(PG_MAPPED, &req->wb_flags); radix_tree_delete(&nfsi->nfs_page_tree, req->wb_index); nfsi->npages--; if (!nfsi->npages) { @@ -422,7 +424,6 @@ static void nfs_inode_remove_request(struct nfs_page *req) iput(inode); } else spin_unlock(&inode->i_lock); - nfs_clear_request(req); nfs_release_request(req); } diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index f8b60e7f4c44..d55cee73f634 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -29,6 +29,7 @@ */ enum { PG_BUSY = 0, + PG_MAPPED, PG_CLEAN, PG_NEED_COMMIT, PG_NEED_RESCHED, -- cgit v1.2.3 From 5167695753c63444a9e6cbbef136200a16c7a225 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 7 Dec 2010 14:18:20 +0100 Subject: perf: Fix duplicate events with multiple-pmu vs software events Because the multi-pmu bits can share contexts between struct pmu instances we could get duplicate events by iterating the pmu list. Signed-off-by: Peter Zijlstra Signed-off-by: Thomas Gleixner LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 1 + kernel/perf_event.c | 35 +++++++++++++++++++++++++++++------ 2 files changed, 30 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index de2c41758e29..4f1279e105ee 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -887,6 +887,7 @@ struct perf_cpu_context { int exclusive; struct list_head rotation_list; int jiffies_interval; + struct pmu *active_pmu; }; struct perf_output_handle { diff --git a/kernel/perf_event.c b/kernel/perf_event.c index eac7e3364335..7b870174c56d 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -3824,6 +3824,8 @@ static void perf_event_task_event(struct perf_task_event *task_event) rcu_read_lock(); list_for_each_entry_rcu(pmu, &pmus, entry) { cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + if (cpuctx->active_pmu != pmu) + goto next; perf_event_task_ctx(&cpuctx->ctx, task_event); ctx = task_event->task_ctx; @@ -3959,6 +3961,8 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event) rcu_read_lock(); list_for_each_entry_rcu(pmu, &pmus, entry) { cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + if (cpuctx->active_pmu != pmu) + goto next; perf_event_comm_ctx(&cpuctx->ctx, comm_event); ctxn = pmu->task_ctx_nr; @@ -4144,6 +4148,8 @@ got_name: rcu_read_lock(); list_for_each_entry_rcu(pmu, &pmus, entry) { cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + if (cpuctx->active_pmu != pmu) + goto next; perf_event_mmap_ctx(&cpuctx->ctx, mmap_event, vma->vm_flags & VM_EXEC); @@ -5145,20 +5151,36 @@ static void *find_pmu_context(int ctxn) return NULL; } -static void free_pmu_context(void * __percpu cpu_context) +static void update_pmu_context(struct pmu *pmu, struct pmu *old_pmu) { - struct pmu *pmu; + int cpu; + + for_each_possible_cpu(cpu) { + struct perf_cpu_context *cpuctx; + + cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu); + + if (cpuctx->active_pmu == old_pmu) + cpuctx->active_pmu = pmu; + } +} + +static void free_pmu_context(struct pmu *pmu) +{ + struct pmu *i; mutex_lock(&pmus_lock); /* * Like a real lame refcount. */ - list_for_each_entry(pmu, &pmus, entry) { - if (pmu->pmu_cpu_context == cpu_context) + list_for_each_entry(i, &pmus, entry) { + if (i->pmu_cpu_context == pmu->pmu_cpu_context) { + update_pmu_context(i, pmu); goto out; + } } - free_percpu(cpu_context); + free_percpu(pmu->pmu_cpu_context); out: mutex_unlock(&pmus_lock); } @@ -5190,6 +5212,7 @@ int perf_pmu_register(struct pmu *pmu) cpuctx->ctx.pmu = pmu; cpuctx->jiffies_interval = 1; INIT_LIST_HEAD(&cpuctx->rotation_list); + cpuctx->active_pmu = pmu; } got_cpu_context: @@ -5241,7 +5264,7 @@ void perf_pmu_unregister(struct pmu *pmu) synchronize_rcu(); free_percpu(pmu->pmu_disable_count); - free_pmu_context(pmu->pmu_cpu_context); + free_pmu_context(pmu); } struct pmu *perf_init_event(struct perf_event *event) -- cgit v1.2.3 From 0f004f5a696a9434b7214d0d3cbd0525ee77d428 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 30 Nov 2010 19:48:45 +0100 Subject: sched: Cure more NO_HZ load average woes There's a long-running regression that proved difficult to fix and which is hitting certain people and is rather annoying in its effects. Damien reported that after 74f5187ac8 (sched: Cure load average vs NO_HZ woes) his load average is unnaturally high, he also noted that even with that patch reverted the load avgerage numbers are not correct. The problem is that the previous patch only solved half the NO_HZ problem, it addressed the part of going into NO_HZ mode, not of comming out of NO_HZ mode. This patch implements that missing half. When comming out of NO_HZ mode there are two important things to take care of: - Folding the pending idle delta into the global active count. - Correctly aging the averages for the idle-duration. So with this patch the NO_HZ interaction should be complete and behaviour between CONFIG_NO_HZ=[yn] should be equivalent. Furthermore, this patch slightly changes the load average computation by adding a rounding term to the fixed point multiplication. Reported-by: Damien Wyart Reported-by: Tim McGrath Tested-by: Damien Wyart Tested-by: Orion Poplawski Tested-by: Kyle McMartin Signed-off-by: Peter Zijlstra Cc: stable@kernel.org Cc: Chase Douglas LKML-Reference: <1291129145.32004.874.camel@laptop> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 +- kernel/sched.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++---- kernel/timer.c | 2 +- 3 files changed, 141 insertions(+), 13 deletions(-) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index 2c79e921a68b..223874538b33 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -143,7 +143,7 @@ extern unsigned long nr_iowait_cpu(int cpu); extern unsigned long this_cpu_load(void); -extern void calc_global_load(void); +extern void calc_global_load(unsigned long ticks); extern unsigned long get_parent_ip(unsigned long addr); diff --git a/kernel/sched.c b/kernel/sched.c index dc91a4d09ac3..6b7c26a1a097 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3119,6 +3119,15 @@ static long calc_load_fold_active(struct rq *this_rq) return delta; } +static unsigned long +calc_load(unsigned long load, unsigned long exp, unsigned long active) +{ + load *= exp; + load += active * (FIXED_1 - exp); + load += 1UL << (FSHIFT - 1); + return load >> FSHIFT; +} + #ifdef CONFIG_NO_HZ /* * For NO_HZ we delay the active fold to the next LOAD_FREQ update. @@ -3148,6 +3157,128 @@ static long calc_load_fold_idle(void) return delta; } + +/** + * fixed_power_int - compute: x^n, in O(log n) time + * + * @x: base of the power + * @frac_bits: fractional bits of @x + * @n: power to raise @x to. + * + * By exploiting the relation between the definition of the natural power + * function: x^n := x*x*...*x (x multiplied by itself for n times), and + * the binary encoding of numbers used by computers: n := \Sum n_i * 2^i, + * (where: n_i \elem {0, 1}, the binary vector representing n), + * we find: x^n := x^(\Sum n_i * 2^i) := \Prod x^(n_i * 2^i), which is + * of course trivially computable in O(log_2 n), the length of our binary + * vector. + */ +static unsigned long +fixed_power_int(unsigned long x, unsigned int frac_bits, unsigned int n) +{ + unsigned long result = 1UL << frac_bits; + + if (n) for (;;) { + if (n & 1) { + result *= x; + result += 1UL << (frac_bits - 1); + result >>= frac_bits; + } + n >>= 1; + if (!n) + break; + x *= x; + x += 1UL << (frac_bits - 1); + x >>= frac_bits; + } + + return result; +} + +/* + * a1 = a0 * e + a * (1 - e) + * + * a2 = a1 * e + a * (1 - e) + * = (a0 * e + a * (1 - e)) * e + a * (1 - e) + * = a0 * e^2 + a * (1 - e) * (1 + e) + * + * a3 = a2 * e + a * (1 - e) + * = (a0 * e^2 + a * (1 - e) * (1 + e)) * e + a * (1 - e) + * = a0 * e^3 + a * (1 - e) * (1 + e + e^2) + * + * ... + * + * an = a0 * e^n + a * (1 - e) * (1 + e + ... + e^n-1) [1] + * = a0 * e^n + a * (1 - e) * (1 - e^n)/(1 - e) + * = a0 * e^n + a * (1 - e^n) + * + * [1] application of the geometric series: + * + * n 1 - x^(n+1) + * S_n := \Sum x^i = ------------- + * i=0 1 - x + */ +static unsigned long +calc_load_n(unsigned long load, unsigned long exp, + unsigned long active, unsigned int n) +{ + + return calc_load(load, fixed_power_int(exp, FSHIFT, n), active); +} + +/* + * NO_HZ can leave us missing all per-cpu ticks calling + * calc_load_account_active(), but since an idle CPU folds its delta into + * calc_load_tasks_idle per calc_load_account_idle(), all we need to do is fold + * in the pending idle delta if our idle period crossed a load cycle boundary. + * + * Once we've updated the global active value, we need to apply the exponential + * weights adjusted to the number of cycles missed. + */ +static void calc_global_nohz(unsigned long ticks) +{ + long delta, active, n; + + if (time_before(jiffies, calc_load_update)) + return; + + /* + * If we crossed a calc_load_update boundary, make sure to fold + * any pending idle changes, the respective CPUs might have + * missed the tick driven calc_load_account_active() update + * due to NO_HZ. + */ + delta = calc_load_fold_idle(); + if (delta) + atomic_long_add(delta, &calc_load_tasks); + + /* + * If we were idle for multiple load cycles, apply them. + */ + if (ticks >= LOAD_FREQ) { + n = ticks / LOAD_FREQ; + + active = atomic_long_read(&calc_load_tasks); + active = active > 0 ? active * FIXED_1 : 0; + + avenrun[0] = calc_load_n(avenrun[0], EXP_1, active, n); + avenrun[1] = calc_load_n(avenrun[1], EXP_5, active, n); + avenrun[2] = calc_load_n(avenrun[2], EXP_15, active, n); + + calc_load_update += n * LOAD_FREQ; + } + + /* + * Its possible the remainder of the above division also crosses + * a LOAD_FREQ period, the regular check in calc_global_load() + * which comes after this will take care of that. + * + * Consider us being 11 ticks before a cycle completion, and us + * sleeping for 4*LOAD_FREQ + 22 ticks, then the above code will + * age us 4 cycles, and the test in calc_global_load() will + * pick up the final one. + */ +} #else static void calc_load_account_idle(struct rq *this_rq) { @@ -3157,6 +3288,10 @@ static inline long calc_load_fold_idle(void) { return 0; } + +static void calc_global_nohz(unsigned long ticks) +{ +} #endif /** @@ -3174,24 +3309,17 @@ void get_avenrun(unsigned long *loads, unsigned long offset, int shift) loads[2] = (avenrun[2] + offset) << shift; } -static unsigned long -calc_load(unsigned long load, unsigned long exp, unsigned long active) -{ - load *= exp; - load += active * (FIXED_1 - exp); - return load >> FSHIFT; -} - /* * calc_load - update the avenrun load estimates 10 ticks after the * CPUs have updated calc_load_tasks. */ -void calc_global_load(void) +void calc_global_load(unsigned long ticks) { - unsigned long upd = calc_load_update + 10; long active; - if (time_before(jiffies, upd)) + calc_global_nohz(ticks); + + if (time_before(jiffies, calc_load_update + 10)) return; active = atomic_long_read(&calc_load_tasks); diff --git a/kernel/timer.c b/kernel/timer.c index 68a9ae7679b7..7bd715fda974 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1319,7 +1319,7 @@ void do_timer(unsigned long ticks) { jiffies_64 += ticks; update_wall_time(); - calc_global_load(); + calc_global_load(ticks); } #ifdef __ARCH_WANT_SYS_ALARM -- cgit v1.2.3 From 67631510a318d5a930055fe927607f483716e100 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Wed, 8 Dec 2010 12:16:33 -0800 Subject: tcp: Replace time wait bucket msg by counter Rather than printing the message to the log, use a mib counter to keep track of the count of occurences of time wait bucket overflow. Reduces spam in logs. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/snmp.h | 1 + net/ipv4/proc.c | 1 + net/ipv4/tcp_minisocks.c | 2 +- 3 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/snmp.h b/include/linux/snmp.h index ebb0c80ffd6e..12b2b18e50c1 100644 --- a/include/linux/snmp.h +++ b/include/linux/snmp.h @@ -230,6 +230,7 @@ enum LINUX_MIB_TCPMINTTLDROP, /* RFC 5082 */ LINUX_MIB_TCPDEFERACCEPTDROP, LINUX_MIB_IPRPFILTER, /* IP Reverse Path Filter (rp_filter) */ + LINUX_MIB_TCPTIMEWAITOVERFLOW, /* TCPTimeWaitOverflow */ __LINUX_MIB_MAX }; diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index 1b48eb1ed453..b14ec7d03b6e 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -253,6 +253,7 @@ static const struct snmp_mib snmp4_net_list[] = { SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP), SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP), SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER), + SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW), SNMP_MIB_SENTINEL }; diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 43cf901d7659..a66735f75963 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -347,7 +347,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo) * socket up. We've got bigger problems than * non-graceful socket closings. */ - LIMIT_NETDEBUG(KERN_INFO "TCP: time wait bucket table overflow\n"); + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPTIMEWAITOVERFLOW); } tcp_update_metrics(sk); -- cgit v1.2.3 From d9ca676bcb26e1fdff9265a3e70f697cd381c889 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 8 Dec 2010 19:40:47 +0000 Subject: atm: correct sysfs 'device' link creation and parent relationships The ATM subsystem was incorrectly creating the 'device' link for ATM nodes in sysfs. This led to incorrect device/parent relationships exposed by sysfs and udev. Instead of rolling the 'device' link by hand in the generic ATM code, pass each ATM driver's bus device down to the sysfs code and let sysfs do this stuff correctly. Signed-off-by: Dan Williams Signed-off-by: David S. Miller --- drivers/atm/adummy.c | 2 +- drivers/atm/ambassador.c | 3 ++- drivers/atm/atmtcp.c | 2 +- drivers/atm/eni.c | 2 +- drivers/atm/firestream.c | 2 +- drivers/atm/fore200e.c | 14 +++++++------- drivers/atm/he.c | 2 +- drivers/atm/horizon.c | 3 ++- drivers/atm/idt77252.c | 3 ++- drivers/atm/iphase.c | 2 +- drivers/atm/lanai.c | 2 +- drivers/atm/nicstar.c | 3 ++- drivers/atm/solos-pci.c | 8 ++++---- drivers/atm/zatm.c | 2 +- drivers/usb/atm/usbatm.c | 15 +++------------ include/linux/atmdev.h | 6 ++++-- net/atm/atm_sysfs.c | 3 ++- net/atm/resources.c | 7 ++++--- net/atm/resources.h | 2 +- 19 files changed, 41 insertions(+), 42 deletions(-) (limited to 'include') diff --git a/drivers/atm/adummy.c b/drivers/atm/adummy.c index 46b94762125b..f9b983ae6877 100644 --- a/drivers/atm/adummy.c +++ b/drivers/atm/adummy.c @@ -154,7 +154,7 @@ static int __init adummy_init(void) err = -ENOMEM; goto out; } - atm_dev = atm_dev_register(DEV_LABEL, &adummy_ops, -1, NULL); + atm_dev = atm_dev_register(DEV_LABEL, NULL, &adummy_ops, -1, NULL); if (!atm_dev) { printk(KERN_ERR DEV_LABEL ": atm_dev_register() failed\n"); err = -ENODEV; diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c index a33896a482e6..ffe9b655292e 100644 --- a/drivers/atm/ambassador.c +++ b/drivers/atm/ambassador.c @@ -2244,7 +2244,8 @@ static int __devinit amb_probe(struct pci_dev *pci_dev, const struct pci_device_ goto out_reset; } - dev->atm_dev = atm_dev_register (DEV_LABEL, &amb_ops, -1, NULL); + dev->atm_dev = atm_dev_register (DEV_LABEL, &pci_dev->dev, &amb_ops, -1, + NULL); if (!dev->atm_dev) { PRINTD (DBG_ERR, "failed to register Madge ATM adapter"); err = -EINVAL; diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c index b9101818b47b..2b464b631f22 100644 --- a/drivers/atm/atmtcp.c +++ b/drivers/atm/atmtcp.c @@ -366,7 +366,7 @@ static int atmtcp_create(int itf,int persist,struct atm_dev **result) if (!dev_data) return -ENOMEM; - dev = atm_dev_register(DEV_LABEL,&atmtcp_v_dev_ops,itf,NULL); + dev = atm_dev_register(DEV_LABEL,NULL,&atmtcp_v_dev_ops,itf,NULL); if (!dev) { kfree(dev_data); return itf == -1 ? -ENOMEM : -EBUSY; diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index 97c5898cd76e..c495fae74200 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -2244,7 +2244,7 @@ static int __devinit eni_init_one(struct pci_dev *pci_dev, &zeroes); if (!cpu_zeroes) goto out1; } - dev = atm_dev_register(DEV_LABEL,&ops,-1,NULL); + dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &ops, -1, NULL); if (!dev) goto out2; pci_set_drvdata(pci_dev, dev); eni_dev->pci_dev = pci_dev; diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c index 5d86bb803e94..7d912baf01d4 100644 --- a/drivers/atm/firestream.c +++ b/drivers/atm/firestream.c @@ -1911,7 +1911,7 @@ static int __devinit firestream_init_one (struct pci_dev *pci_dev, fs_dev, sizeof (struct fs_dev)); if (!fs_dev) goto err_out; - atm_dev = atm_dev_register("fs", &ops, -1, NULL); + atm_dev = atm_dev_register("fs", &pci_dev->dev, &ops, -1, NULL); if (!atm_dev) goto err_out_free_fs_dev; diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c index c8fc69c85a06..962c309b40c0 100644 --- a/drivers/atm/fore200e.c +++ b/drivers/atm/fore200e.c @@ -2567,14 +2567,14 @@ release: static int __devinit -fore200e_register(struct fore200e* fore200e) +fore200e_register(struct fore200e* fore200e, struct device *parent) { struct atm_dev* atm_dev; DPRINTK(2, "device %s being registered\n", fore200e->name); - atm_dev = atm_dev_register(fore200e->bus->proc_name, &fore200e_ops, -1, - NULL); + atm_dev = atm_dev_register(fore200e->bus->proc_name, parent, &fore200e_ops, + -1, NULL); if (atm_dev == NULL) { printk(FORE200E "unable to register device %s\n", fore200e->name); return -ENODEV; @@ -2594,9 +2594,9 @@ fore200e_register(struct fore200e* fore200e) static int __devinit -fore200e_init(struct fore200e* fore200e) +fore200e_init(struct fore200e* fore200e, struct device *parent) { - if (fore200e_register(fore200e) < 0) + if (fore200e_register(fore200e, parent) < 0) return -ENODEV; if (fore200e->bus->configure(fore200e) < 0) @@ -2662,7 +2662,7 @@ static int __devinit fore200e_sba_probe(struct platform_device *op, sprintf(fore200e->name, "%s-%d", bus->model_name, index); - err = fore200e_init(fore200e); + err = fore200e_init(fore200e, &op->dev); if (err < 0) { fore200e_shutdown(fore200e); kfree(fore200e); @@ -2740,7 +2740,7 @@ fore200e_pca_detect(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent sprintf(fore200e->name, "%s-%d", bus->model_name, index); - err = fore200e_init(fore200e); + err = fore200e_init(fore200e, &pci_dev->dev); if (err < 0) { fore200e_shutdown(fore200e); goto out_free; diff --git a/drivers/atm/he.c b/drivers/atm/he.c index 801e8b6e9d1f..6cf59bf281dc 100644 --- a/drivers/atm/he.c +++ b/drivers/atm/he.c @@ -366,7 +366,7 @@ he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent) goto init_one_failure; } - atm_dev = atm_dev_register(DEV_LABEL, &he_ops, -1, NULL); + atm_dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &he_ops, -1, NULL); if (!atm_dev) { err = -ENODEV; goto init_one_failure; diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c index a95790452a68..24761e1d6642 100644 --- a/drivers/atm/horizon.c +++ b/drivers/atm/horizon.c @@ -2733,7 +2733,8 @@ static int __devinit hrz_probe(struct pci_dev *pci_dev, const struct pci_device_ PRINTD(DBG_INFO, "found Madge ATM adapter (hrz) at: IO %x, IRQ %u, MEM %p", iobase, irq, membase); - dev->atm_dev = atm_dev_register(DEV_LABEL, &hrz_ops, -1, NULL); + dev->atm_dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &hrz_ops, -1, + NULL); if (!(dev->atm_dev)) { PRINTD(DBG_ERR, "failed to register Madge ATM adapter"); err = -EINVAL; diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index bce57328ddde..bfb7feee0400 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -3698,7 +3698,8 @@ idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id) goto err_out_iounmap; } - dev = atm_dev_register("idt77252", &idt77252_ops, -1, NULL); + dev = atm_dev_register("idt77252", &pcidev->dev, &idt77252_ops, -1, + NULL); if (!dev) { printk("%s: can't register atm device\n", card->name); err = -EIO; diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c index 9309d4724e13..729254053758 100644 --- a/drivers/atm/iphase.c +++ b/drivers/atm/iphase.c @@ -3172,7 +3172,7 @@ static int __devinit ia_init_one(struct pci_dev *pdev, ret = -ENODEV; goto err_out_free_iadev; } - dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL); + dev = atm_dev_register(DEV_LABEL, &pdev->dev, &ops, -1, NULL); if (!dev) { ret = -ENOMEM; goto err_out_disable_dev; diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c index cbe15a86c669..a395c9aab146 100644 --- a/drivers/atm/lanai.c +++ b/drivers/atm/lanai.c @@ -2591,7 +2591,7 @@ static int __devinit lanai_init_one(struct pci_dev *pci, return -ENOMEM; } - atmdev = atm_dev_register(DEV_LABEL, &ops, -1, NULL); + atmdev = atm_dev_register(DEV_LABEL, &pci->dev, &ops, -1, NULL); if (atmdev == NULL) { printk(KERN_ERR DEV_LABEL ": couldn't register atm device!\n"); diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c index 2f3516b7f118..6b313ee9231b 100644 --- a/drivers/atm/nicstar.c +++ b/drivers/atm/nicstar.c @@ -771,7 +771,8 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev) } /* Register device */ - card->atmdev = atm_dev_register("nicstar", &atm_ops, -1, NULL); + card->atmdev = atm_dev_register("nicstar", &card->pcidev->dev, &atm_ops, + -1, NULL); if (card->atmdev == NULL) { printk("nicstar%d: can't register device.\n", i); error = 17; diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c index 2e08c996fd30..73fb1c4f4cd4 100644 --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -166,7 +166,7 @@ static irqreturn_t solos_irq(int irq, void *dev_id); static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci); static int list_vccs(int vci); static void release_vccs(struct atm_dev *dev); -static int atm_init(struct solos_card *); +static int atm_init(struct solos_card *, struct device *); static void atm_remove(struct solos_card *); static int send_command(struct solos_card *card, int dev, const char *buf, size_t size); static void solos_bh(unsigned long); @@ -1210,7 +1210,7 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) if (db_firmware_upgrade) flash_upgrade(card, 3); - err = atm_init(card); + err = atm_init(card, &dev->dev); if (err) goto out_free_irq; @@ -1233,7 +1233,7 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) return err; } -static int atm_init(struct solos_card *card) +static int atm_init(struct solos_card *card, struct device *parent) { int i; @@ -1244,7 +1244,7 @@ static int atm_init(struct solos_card *card) skb_queue_head_init(&card->tx_queue[i]); skb_queue_head_init(&card->cli_queue[i]); - card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL); + card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL); if (!card->atmdev[i]) { dev_err(&card->dev->dev, "Could not register ATM device %d\n", i); atm_remove(card); diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c index 4e885d2da49c..624917902b65 100644 --- a/drivers/atm/zatm.c +++ b/drivers/atm/zatm.c @@ -1597,7 +1597,7 @@ static int __devinit zatm_init_one(struct pci_dev *pci_dev, goto out; } - dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL); + dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &ops, -1, NULL); if (!dev) goto out_free; diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index 05bf5a27b5b0..989e16e4ab5c 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -951,7 +951,9 @@ static int usbatm_atm_init(struct usbatm_data *instance) * condition: callbacks we register can be executed at once, before we have * initialized the struct atm_dev. To protect against this, all callbacks * abort if atm_dev->dev_data is NULL. */ - atm_dev = atm_dev_register(instance->driver_name, &usbatm_atm_devops, -1, NULL); + atm_dev = atm_dev_register(instance->driver_name, + &instance->usb_intf->dev, &usbatm_atm_devops, + -1, NULL); if (!atm_dev) { usb_err(instance, "%s: failed to register ATM device!\n", __func__); return -1; @@ -966,14 +968,6 @@ static int usbatm_atm_init(struct usbatm_data *instance) /* temp init ATM device, set to 128kbit */ atm_dev->link_rate = 128 * 1000 / 424; - ret = sysfs_create_link(&atm_dev->class_dev.kobj, - &instance->usb_intf->dev.kobj, "device"); - if (ret) { - atm_err(instance, "%s: sysfs_create_link failed: %d\n", - __func__, ret); - goto fail_sysfs; - } - if (instance->driver->atm_start && ((ret = instance->driver->atm_start(instance, atm_dev)) < 0)) { atm_err(instance, "%s: atm_start failed: %d!\n", __func__, ret); goto fail; @@ -992,8 +986,6 @@ static int usbatm_atm_init(struct usbatm_data *instance) return 0; fail: - sysfs_remove_link(&atm_dev->class_dev.kobj, "device"); - fail_sysfs: instance->atm_dev = NULL; atm_dev_deregister(atm_dev); /* usbatm_atm_dev_close will eventually be called */ return ret; @@ -1329,7 +1321,6 @@ void usbatm_usb_disconnect(struct usb_interface *intf) /* ATM finalize */ if (instance->atm_dev) { - sysfs_remove_link(&instance->atm_dev->class_dev.kobj, "device"); atm_dev_deregister(instance->atm_dev); instance->atm_dev = NULL; } diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index a8e4e832cdbb..475f8c42c0e9 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -427,8 +427,10 @@ extern rwlock_t vcc_sklist_lock; #define ATM_SKB(skb) (((struct atm_skb_data *) (skb)->cb)) -struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops, - int number,unsigned long *flags); /* number == -1: pick first available */ +struct atm_dev *atm_dev_register(const char *type, struct device *parent, + const struct atmdev_ops *ops, + int number, /* -1 == pick first available */ + unsigned long *flags); struct atm_dev *atm_dev_lookup(int number); void atm_dev_deregister(struct atm_dev *dev); diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c index 799c631f0fed..f7fa67c78766 100644 --- a/net/atm/atm_sysfs.c +++ b/net/atm/atm_sysfs.c @@ -143,12 +143,13 @@ static struct class atm_class = { .dev_uevent = atm_uevent, }; -int atm_register_sysfs(struct atm_dev *adev) +int atm_register_sysfs(struct atm_dev *adev, struct device *parent) { struct device *cdev = &adev->class_dev; int i, j, err; cdev->class = &atm_class; + cdev->parent = parent; dev_set_drvdata(cdev, adev); dev_set_name(cdev, "%s%d", adev->type, adev->number); diff --git a/net/atm/resources.c b/net/atm/resources.c index d29e58261511..23f45ce6f351 100644 --- a/net/atm/resources.c +++ b/net/atm/resources.c @@ -74,8 +74,9 @@ struct atm_dev *atm_dev_lookup(int number) } EXPORT_SYMBOL(atm_dev_lookup); -struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops, - int number, unsigned long *flags) +struct atm_dev *atm_dev_register(const char *type, struct device *parent, + const struct atmdev_ops *ops, int number, + unsigned long *flags) { struct atm_dev *dev, *inuse; @@ -115,7 +116,7 @@ struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops, goto out_fail; } - if (atm_register_sysfs(dev) < 0) { + if (atm_register_sysfs(dev, parent) < 0) { pr_err("atm_register_sysfs failed for dev %s\n", type); atm_proc_dev_deregister(dev); goto out_fail; diff --git a/net/atm/resources.h b/net/atm/resources.h index 126fb1840dfb..521431e30507 100644 --- a/net/atm/resources.h +++ b/net/atm/resources.h @@ -42,6 +42,6 @@ static inline void atm_proc_dev_deregister(struct atm_dev *dev) #endif /* CONFIG_PROC_FS */ -int atm_register_sysfs(struct atm_dev *adev); +int atm_register_sysfs(struct atm_dev *adev, struct device *parent); void atm_unregister_sysfs(struct atm_dev *adev); #endif -- cgit v1.2.3 From d90aa92c0c1625d7f02050e4d2924805840cda3d Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 9 Dec 2010 16:50:52 +0800 Subject: acpi: fix _OSI string setup regression commit b0ed7a91(ACPICA/ACPI: Add new host interfaces for _OSI suppor) introduced a regression that _OSI string setup fails. There are 2 paths to setup _OSI string. DMI: acpi_dmi_osi_linux -> set_osi_linux -> acpi_osi_setup -> copy _OSI string to osi_setup_string Boot command line: acpi_osi_setup -> copy _OSI string to osi_setup_string Later, acpi_osi_setup_late will be called to handle osi_setup_string. If _OSI string is "Linux" or "!Linux", then the call path is, acpi_osi_setup_late -> acpi_cmdline_osi_linux -> set_osi_linux -> acpi_osi_setup -> copy _OSI string to osi_setup_string This actually never installs _OSI string(acpi_install_interface not called), but just copy the _OSI string to osi_setup_string. This patch fixes the regression. Reported-and-tested-by: Lukas Hejtmanek Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/osl.c | 59 +++++++++++++++++++++++++++++----------------------- include/linux/acpi.h | 2 +- 2 files changed, 34 insertions(+), 27 deletions(-) (limited to 'include') diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 966feddf6b1b..6867443c4941 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -152,8 +152,7 @@ static struct osi_linux { unsigned int enable:1; unsigned int dmi:1; unsigned int cmdline:1; - unsigned int known:1; -} osi_linux = { 0, 0, 0, 0}; +} osi_linux = {0, 0, 0}; static u32 acpi_osi_handler(acpi_string interface, u32 supported) { @@ -1055,13 +1054,22 @@ static int __init acpi_os_name_setup(char *str) __setup("acpi_os_name=", acpi_os_name_setup); +void __init acpi_osi_setup(char *str) +{ + if (!acpi_gbl_create_osi_method) + return; + + if (str == NULL || *str == '\0') { + printk(KERN_INFO PREFIX "_OSI method disabled\n"); + acpi_gbl_create_osi_method = FALSE; + } else + strncpy(osi_setup_string, str, OSI_STRING_LENGTH_MAX); +} + static void __init set_osi_linux(unsigned int enable) { - if (osi_linux.enable != enable) { + if (osi_linux.enable != enable) osi_linux.enable = enable; - printk(KERN_NOTICE PREFIX "%sed _OSI(Linux)\n", - enable ? "Add": "Delet"); - } if (osi_linux.enable) acpi_osi_setup("Linux"); @@ -1073,7 +1081,8 @@ static void __init set_osi_linux(unsigned int enable) static void __init acpi_cmdline_osi_linux(unsigned int enable) { - osi_linux.cmdline = 1; /* cmdline set the default */ + osi_linux.cmdline = 1; /* cmdline set the default and override DMI */ + osi_linux.dmi = 0; set_osi_linux(enable); return; @@ -1081,15 +1090,12 @@ static void __init acpi_cmdline_osi_linux(unsigned int enable) void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) { - osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ - printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); if (enable == -1) return; - osi_linux.known = 1; /* DMI knows which OSI(Linux) default needed */ - + osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ set_osi_linux(enable); return; @@ -1105,36 +1111,37 @@ void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) static void __init acpi_osi_setup_late(void) { char *str = osi_setup_string; + acpi_status status; if (*str == '\0') return; - if (!strcmp("!Linux", str)) { - acpi_cmdline_osi_linux(0); /* !enable */ - } else if (*str == '!') { - if (acpi_remove_interface(++str) == AE_OK) + if (*str == '!') { + status = acpi_remove_interface(++str); + + if (ACPI_SUCCESS(status)) printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); - } else if (!strcmp("Linux", str)) { - acpi_cmdline_osi_linux(1); /* enable */ } else { - if (acpi_install_interface(str) == AE_OK) + status = acpi_install_interface(str); + + if (ACPI_SUCCESS(status)) printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); } } -int __init acpi_osi_setup(char *str) +static int __init osi_setup(char *str) { - if (str == NULL || *str == '\0') { - printk(KERN_INFO PREFIX "_OSI method disabled\n"); - acpi_gbl_create_osi_method = FALSE; - } else { - strncpy(osi_setup_string, str, OSI_STRING_LENGTH_MAX); - } + if (str && !strcmp("Linux", str)) + acpi_cmdline_osi_linux(1); + else if (str && !strcmp("!Linux", str)) + acpi_cmdline_osi_linux(0); + else + acpi_osi_setup(str); return 1; } -__setup("acpi_osi=", acpi_osi_setup); +__setup("acpi_osi=", osi_setup); /* enable serialization to combat AE_ALREADY_EXISTS errors */ static int __init acpi_serialize_setup(char *str) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 050a7bccb836..67c91b4418b0 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -219,7 +219,7 @@ static inline int acpi_video_display_switch_support(void) extern int acpi_blacklisted(void); extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d); -extern int acpi_osi_setup(char *str); +extern void acpi_osi_setup(char *str); #ifdef CONFIG_ACPI_NUMA int acpi_get_pxm(acpi_handle handle); -- cgit v1.2.3 From 3353bebe7c89725ab2f476b9d8d618259402d52e Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 30 Nov 2010 18:21:46 -0500 Subject: ACPI: video: fix build for VIDEO_OUTPUT_CONTROL=n drivers/built-in.o: In function `acpi_video_bus_put_devices': video.c:(.text+0x79663): undefined reference to `video_output_unregister' drivers/built-in.o: In function `acpi_video_bus_add': video.c:(.text+0x7b0b3): undefined reference to `video_output_register' Signed-off-by: Len Brown --- include/linux/video_output.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/video_output.h b/include/linux/video_output.h index 2fb46bc9340d..ed5cdeb3604d 100644 --- a/include/linux/video_output.h +++ b/include/linux/video_output.h @@ -23,6 +23,7 @@ #ifndef _LINUX_VIDEO_OUTPUT_H #define _LINUX_VIDEO_OUTPUT_H #include +#include struct output_device; struct output_properties { int (*set_state)(struct output_device *); @@ -34,9 +35,23 @@ struct output_device { struct device dev; }; #define to_output_device(obj) container_of(obj, struct output_device, dev) +#if defined(CONFIG_VIDEO_OUTPUT_CONTROL) || defined(CONFIG_VIDEO_OUTPUT_CONTROL_MODULE) struct output_device *video_output_register(const char *name, struct device *dev, void *devdata, struct output_properties *op); void video_output_unregister(struct output_device *dev); +#else +static struct output_device *video_output_register(const char *name, + struct device *dev, + void *devdata, + struct output_properties *op) +{ + return ERR_PTR(-ENODEV); +} +static void video_output_unregister(struct output_device *dev) +{ + return; +} +#endif #endif -- cgit v1.2.3 From b72512ed706efb26087fcbbc5f98ed64ac1230d5 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 5 Sep 2010 14:51:49 +0100 Subject: ACPI: video: fix build for CONFIG_ACPI=n MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In file included from drivers/gpu/drm/i915/intel_opregion.c:30: include/acpi/video.h:22: warning: ‘struct acpi_device’ declared inside parameter list ... include/acpi/video.h:24: error: ‘ENODEV’ undeclared (first use in this function) Signed-off-by: Chris Wilson Signed-off-by: Len Brown --- include/acpi/video.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/video.h b/include/acpi/video.h index 551793c9b6e8..0e98e679d3a7 100644 --- a/include/acpi/video.h +++ b/include/acpi/video.h @@ -1,6 +1,10 @@ #ifndef __ACPI_VIDEO_H #define __ACPI_VIDEO_H +#include /* for ENODEV */ + +struct acpi_device; + #define ACPI_VIDEO_DISPLAY_CRT 1 #define ACPI_VIDEO_DISPLAY_TV 2 #define ACPI_VIDEO_DISPLAY_DVI 3 @@ -26,4 +30,3 @@ static inline int acpi_video_get_edid(struct acpi_device *device, int type, #endif #endif - -- cgit v1.2.3 From 53dde5f385bc56e312f78b7cb25ffaf8efd4735d Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 16 Nov 2010 13:23:50 -0800 Subject: bootmem: Add alloc_bootmem_align() Add an alloc_bootmem_align() interface to allocate bootmem with specified alignment. This is necessary to be able to allocate the xsave area in a subsequent patch. Signed-off-by: Suresh Siddha LKML-Reference: <20101116212441.977574826@sbsiddha-MOBL3.sc.intel.com> Acked-by: H. Peter Anvin Signed-off-by: H. Peter Anvin Cc: --- include/linux/bootmem.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 266ab9291232..499dfe982a0e 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -105,6 +105,8 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, #define alloc_bootmem(x) \ __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) +#define alloc_bootmem_align(x, align) \ + __alloc_bootmem(x, align, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_nopanic(x) \ __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_pages(x) \ -- cgit v1.2.3 From ab4e0192196b8d4e43a3945742d4996da934a86f Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 14 Dec 2010 23:53:21 -0800 Subject: Input: define separate EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 The desire to keep old names for the EVIOCGKEYCODE/EVIOCSKEYCODE while extending them to support large scancodes was a mistake. While we tried to keep ABI intact (and we succeeded in doing that, programs compiled on older kernels will work on newer ones) there is still a problem with recompiling existing software with newer kernel headers. New kernel headers will supply updated ioctl numbers and kernel will expect that userspace will use struct input_keymap_entry to set and retrieve keymap data. But since the names of ioctls are still the same userspace will happily compile even if not adjusted to make use of the new structure and will start miraculously fail in the field. To avoid this issue let's revert EVIOCGKEYCODE/EVIOCSKEYCODE definitions and add EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 so that userspace can explicitly select the style of ioctls it wants to employ. Reviewed-by: Henrik Rydberg Acked-by: Jarod Wilson Acked-by: Mauro Carvalho Chehab Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 113 ++++++++++++++++++++++++++------------------------ include/linux/input.h | 6 ++- 2 files changed, 62 insertions(+), 57 deletions(-) (limited to 'include') diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index e3f7fc6f9565..68f09a868434 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -534,76 +534,73 @@ static int handle_eviocgbit(struct input_dev *dev, } #undef OLD_KEY_MAX -static int evdev_handle_get_keycode(struct input_dev *dev, - void __user *p, size_t size) +static int evdev_handle_get_keycode(struct input_dev *dev, void __user *p) { - struct input_keymap_entry ke; + struct input_keymap_entry ke = { + .len = sizeof(unsigned int), + .flags = 0, + }; + int __user *ip = (int __user *)p; int error; - memset(&ke, 0, sizeof(ke)); - - if (size == sizeof(unsigned int[2])) { - /* legacy case */ - int __user *ip = (int __user *)p; + /* legacy case */ + if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) + return -EFAULT; - if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) - return -EFAULT; + error = input_get_keycode(dev, &ke); + if (error) + return error; - ke.len = sizeof(unsigned int); - ke.flags = 0; + if (put_user(ke.keycode, ip + 1)) + return -EFAULT; - error = input_get_keycode(dev, &ke); - if (error) - return error; + return 0; +} - if (put_user(ke.keycode, ip + 1)) - return -EFAULT; +static int evdev_handle_get_keycode_v2(struct input_dev *dev, void __user *p) +{ + struct input_keymap_entry ke; + int error; - } else { - size = min(size, sizeof(ke)); + if (copy_from_user(&ke, p, sizeof(ke))) + return -EFAULT; - if (copy_from_user(&ke, p, size)) - return -EFAULT; + error = input_get_keycode(dev, &ke); + if (error) + return error; - error = input_get_keycode(dev, &ke); - if (error) - return error; + if (copy_to_user(p, &ke, sizeof(ke))) + return -EFAULT; - if (copy_to_user(p, &ke, size)) - return -EFAULT; - } return 0; } -static int evdev_handle_set_keycode(struct input_dev *dev, - void __user *p, size_t size) +static int evdev_handle_set_keycode(struct input_dev *dev, void __user *p) { - struct input_keymap_entry ke; - - memset(&ke, 0, sizeof(ke)); + struct input_keymap_entry ke = { + .len = sizeof(unsigned int), + .flags = 0, + }; + int __user *ip = (int __user *)p; - if (size == sizeof(unsigned int[2])) { - /* legacy case */ - int __user *ip = (int __user *)p; + if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) + return -EFAULT; - if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) - return -EFAULT; + if (get_user(ke.keycode, ip + 1)) + return -EFAULT; - if (get_user(ke.keycode, ip + 1)) - return -EFAULT; + return input_set_keycode(dev, &ke); +} - ke.len = sizeof(unsigned int); - ke.flags = 0; +static int evdev_handle_set_keycode_v2(struct input_dev *dev, void __user *p) +{ + struct input_keymap_entry ke; - } else { - size = min(size, sizeof(ke)); + if (copy_from_user(&ke, p, sizeof(ke))) + return -EFAULT; - if (copy_from_user(&ke, p, size)) - return -EFAULT; - - if (ke.len > sizeof(ke.scancode)) - return -EINVAL; - } + if (ke.len > sizeof(ke.scancode)) + return -EINVAL; return input_set_keycode(dev, &ke); } @@ -669,6 +666,18 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, return evdev_grab(evdev, client); else return evdev_ungrab(evdev, client); + + case EVIOCGKEYCODE: + return evdev_handle_get_keycode(dev, p); + + case EVIOCSKEYCODE: + return evdev_handle_set_keycode(dev, p); + + case EVIOCGKEYCODE_V2: + return evdev_handle_get_keycode_v2(dev, p); + + case EVIOCSKEYCODE_V2: + return evdev_handle_set_keycode_v2(dev, p); } size = _IOC_SIZE(cmd); @@ -708,12 +717,6 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, return -EFAULT; return error; - - case EVIOC_MASK_SIZE(EVIOCGKEYCODE): - return evdev_handle_get_keycode(dev, p, size); - - case EVIOC_MASK_SIZE(EVIOCSKEYCODE): - return evdev_handle_set_keycode(dev, p, size); } /* Multi-number variable-length handlers */ diff --git a/include/linux/input.h b/include/linux/input.h index a8af21d42bc1..9777668883be 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -104,8 +104,10 @@ struct input_keymap_entry { #define EVIOCGREP _IOR('E', 0x03, unsigned int[2]) /* get repeat settings */ #define EVIOCSREP _IOW('E', 0x03, unsigned int[2]) /* set repeat settings */ -#define EVIOCGKEYCODE _IOR('E', 0x04, struct input_keymap_entry) /* get keycode */ -#define EVIOCSKEYCODE _IOW('E', 0x04, struct input_keymap_entry) /* set keycode */ +#define EVIOCGKEYCODE _IOR('E', 0x04, unsigned int[2]) /* get keycode */ +#define EVIOCGKEYCODE_V2 _IOR('E', 0x04, struct input_keymap_entry) +#define EVIOCSKEYCODE _IOW('E', 0x04, unsigned int[2]) /* set keycode */ +#define EVIOCSKEYCODE_V2 _IOW('E', 0x04, struct input_keymap_entry) #define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */ #define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */ -- cgit v1.2.3 From 62731fa0c893515dc6cbc3e0a2879a92793c735f Mon Sep 17 00:00:00 2001 From: Alexey Zaytsev Date: Mon, 22 Nov 2010 00:33:03 +0000 Subject: fanotify: split version into version and metadata_len To implement per event type optional headers we are interested in knowing how long the metadata structure is. This patch slits the __u32 version field into a __u8 version and a __u16 metadata_len field (with __u8 left over). This should allow for backwards compat ABI. Signed-off-by: Alexey Zaytsev [rewrote descrtion and changed object sizes and ordering - eparis] Signed-off-by: Eric Paris --- include/linux/fanotify.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index c73224315aee..6c6133f76e16 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -83,11 +83,13 @@ FAN_ALL_PERM_EVENTS |\ FAN_Q_OVERFLOW) -#define FANOTIFY_METADATA_VERSION 2 +#define FANOTIFY_METADATA_VERSION 3 struct fanotify_event_metadata { __u32 event_len; - __u32 vers; + __u8 vers; + __u8 reserved; + __u16 metadata_len; __aligned_u64 mask; __s32 fd; __s32 pid; -- cgit v1.2.3 From 667c78afaec0ac500908e191e8f236e9578d7b1f Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 8 Dec 2010 12:39:12 -0800 Subject: xen: Provide a variant of __RING_SIZE() that is an integer constant expression Without this, gcc 4.5 won't compile xen-netfront and xen-blkfront, where this is being used to specify array sizes. Signed-off-by: Jan Beulich Signed-off-by: Jeremy Fitzhardinge Cc: Jens Axboe Cc: David Miller Cc: Stable Kernel Signed-off-by: Linus Torvalds --- drivers/block/xen-blkfront.c | 2 +- drivers/net/xen-netfront.c | 4 ++-- include/xen/interface/io/ring.h | 11 +++++++++-- 3 files changed, 12 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 4f9e22f29138..657873e4328d 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -72,7 +72,7 @@ struct blk_shadow { static DEFINE_MUTEX(blkfront_mutex); static const struct block_device_operations xlvbd_block_fops; -#define BLK_RING_SIZE __RING_SIZE((struct blkif_sring *)0, PAGE_SIZE) +#define BLK_RING_SIZE __CONST_RING_SIZE(blkif, PAGE_SIZE) /* * We have one of these per vbd, whether ide, scsi or 'other'. They diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 458bb57914a3..cdbeec9f83ea 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -66,8 +66,8 @@ struct netfront_cb { #define GRANT_INVALID_REF 0 -#define NET_TX_RING_SIZE __RING_SIZE((struct xen_netif_tx_sring *)0, PAGE_SIZE) -#define NET_RX_RING_SIZE __RING_SIZE((struct xen_netif_rx_sring *)0, PAGE_SIZE) +#define NET_TX_RING_SIZE __CONST_RING_SIZE(xen_netif_tx, PAGE_SIZE) +#define NET_RX_RING_SIZE __CONST_RING_SIZE(xen_netif_rx, PAGE_SIZE) #define TX_MAX_TARGET min_t(int, NET_RX_RING_SIZE, 256) struct netfront_info { diff --git a/include/xen/interface/io/ring.h b/include/xen/interface/io/ring.h index e8cbf431c8cc..75271b9a8f61 100644 --- a/include/xen/interface/io/ring.h +++ b/include/xen/interface/io/ring.h @@ -24,8 +24,15 @@ typedef unsigned int RING_IDX; * A ring contains as many entries as will fit, rounded down to the nearest * power of two (so we can mask with (size-1) to loop around). */ -#define __RING_SIZE(_s, _sz) \ - (__RD32(((_sz) - (long)&(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0]))) +#define __CONST_RING_SIZE(_s, _sz) \ + (__RD32(((_sz) - offsetof(struct _s##_sring, ring)) / \ + sizeof(((struct _s##_sring *)0)->ring[0]))) + +/* + * The same for passing in an actual pointer instead of a name tag. + */ +#define __RING_SIZE(_s, _sz) \ + (__RD32(((_sz) - (long)&(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0]))) /* * Macros to make the correct C datatypes for a new kind of ring. -- cgit v1.2.3 From f08f5a0add20834d3f3d876dfe08005a5df656db Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 16 Dec 2010 17:11:58 +0100 Subject: PM / Runtime: Fix pm_runtime_suspended() There are some situations (e.g. in __pm_generic_call()), where pm_runtime_suspended() is used to decide whether or not to execute a device's (system) ->suspend() callback. The callback is not executed if pm_runtime_suspended() returns true, but it does so for devices that don't even support runtime PM, because the power.disable_depth device field is ignored by it. This leads to problems (i.e. devices are not suspened when they should), so rework pm_runtime_suspended() so that it returns false if the device's power.disable_depth field is different from zero. Signed-off-by: Rafael J. Wysocki Cc: stable@kernel.org --- Documentation/power/runtime_pm.txt | 4 ++-- include/linux/pm_runtime.h | 3 ++- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 489e9bacd165..41cc7b30d7dd 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -379,8 +379,8 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: zero) bool pm_runtime_suspended(struct device *dev); - - return true if the device's runtime PM status is 'suspended', or false - otherwise + - return true if the device's runtime PM status is 'suspended' and its + 'power.disable_depth' field is equal to zero, or false otherwise void pm_runtime_allow(struct device *dev); - set the power.runtime_auto flag for the device and decrease its usage diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 3ec2358f8692..d19f1cca7f74 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -77,7 +77,8 @@ static inline void device_set_run_wake(struct device *dev, bool enable) static inline bool pm_runtime_suspended(struct device *dev) { - return dev->power.runtime_status == RPM_SUSPENDED; + return dev->power.runtime_status == RPM_SUSPENDED + && !dev->power.disable_depth; } static inline void pm_runtime_mark_last_busy(struct device *dev) -- cgit v1.2.3 From 3f84622d7c7818077f5e6cf4b8a0d1b10dc65147 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 27 Nov 2010 19:26:32 +0100 Subject: SSB: Fix nvram_get on BCM47xx platform The nvram_get function was never in the mainline kernel, it only existed in an external OpenWrt patch. Use nvram_getenv function, which is in mainline and use an include instead of an extra function declaration. et0macaddr contains the mac address in text from like 00:11:22:33:44:55. We have to parse it before adding it into macaddr. nvram_parse_macaddr will be merged into asm/mach-bcm47xx/nvram.h through the MIPS git tree and will be available soon. It will not build now without nvram_parse_macaddr, but it hasn't before either. Signed-off-by: Hauke Mehrtens To: linux-mips@linux-mips.org Cc: mb@bu3sch.de Cc: netdev@vger.kernel.org Cc: Hauke Mehrtens Acked-by: Michael Buesch Patchwork: https://patchwork.linux-mips.org/patch/1849/ Signed-off-by: Ralf Baechle --- include/linux/ssb/ssb_driver_gige.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/linux/ssb/ssb_driver_gige.h b/include/linux/ssb/ssb_driver_gige.h index 942e38736901..eba52a100533 100644 --- a/include/linux/ssb/ssb_driver_gige.h +++ b/include/linux/ssb/ssb_driver_gige.h @@ -96,16 +96,21 @@ static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev) return 0; } -extern char * nvram_get(const char *name); +#ifdef CONFIG_BCM47XX +#include /* Get the device MAC address */ static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) { -#ifdef CONFIG_BCM47XX - char *res = nvram_get("et0macaddr"); - if (res) - memcpy(macaddr, res, 6); -#endif + char buf[20]; + if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0) + return; + nvram_parse_macaddr(buf, macaddr); } +#else +static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) +{ +} +#endif extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev, struct pci_dev *pdev); -- cgit v1.2.3 From e692cb668fdd5a712c6ed2a2d6f2a36ee83997b4 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Wed, 1 Dec 2010 19:41:49 +0100 Subject: block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead When stacking devices, a request_queue is not always available. This forced us to have a no_cluster flag in the queue_limits that could be used as a carrier until the request_queue had been set up for a metadevice. There were several problems with that approach. First of all it was up to the stacking device to remember to set queue flag after stacking had completed. Also, the queue flag and the queue limits had to be kept in sync at all times. We got that wrong, which could lead to us issuing commands that went beyond the max scatterlist limit set by the driver. The proper fix is to avoid having two flags for tracking the same thing. We deprecate QUEUE_FLAG_CLUSTER and use the queue limit directly in the block layer merging functions. The queue_limit 'no_cluster' is turned into 'cluster' to avoid double negatives and to ease stacking. Clustering defaults to being enabled as before. The queue flag logic is removed from the stacking function, and explicitly setting the cluster flag is no longer necessary in DM and MD. Reported-by: Ed Lin Signed-off-by: Martin K. Petersen Acked-by: Mike Snitzer Cc: stable@kernel.org Signed-off-by: Jens Axboe --- block/blk-merge.c | 6 +++--- block/blk-settings.c | 25 ++----------------------- block/blk-sysfs.c | 2 +- drivers/md/dm-table.c | 5 ----- drivers/md/md.c | 3 --- drivers/scsi/scsi_lib.c | 3 +-- include/linux/blkdev.h | 9 ++++++--- 7 files changed, 13 insertions(+), 40 deletions(-) (limited to 'include') diff --git a/block/blk-merge.c b/block/blk-merge.c index 77b7c26df6b5..74bc4a768f32 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -21,7 +21,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, return 0; fbio = bio; - cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); + cluster = blk_queue_cluster(q); seg_size = 0; nr_phys_segs = 0; for_each_bio(bio) { @@ -87,7 +87,7 @@ EXPORT_SYMBOL(blk_recount_segments); static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio, struct bio *nxt) { - if (!test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags)) + if (!blk_queue_cluster(q)) return 0; if (bio->bi_seg_back_size + nxt->bi_seg_front_size > @@ -123,7 +123,7 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq, int nsegs, cluster; nsegs = 0; - cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); + cluster = blk_queue_cluster(q); /* * for each bio in rq diff --git a/block/blk-settings.c b/block/blk-settings.c index 701859fb9647..e55f5fc4ca22 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -126,7 +126,7 @@ void blk_set_default_limits(struct queue_limits *lim) lim->alignment_offset = 0; lim->io_opt = 0; lim->misaligned = 0; - lim->no_cluster = 0; + lim->cluster = 1; } EXPORT_SYMBOL(blk_set_default_limits); @@ -464,15 +464,6 @@ EXPORT_SYMBOL(blk_queue_io_opt); void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b) { blk_stack_limits(&t->limits, &b->limits, 0); - - if (!t->queue_lock) - WARN_ON_ONCE(1); - else if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) { - unsigned long flags; - spin_lock_irqsave(t->queue_lock, flags); - queue_flag_clear(QUEUE_FLAG_CLUSTER, t); - spin_unlock_irqrestore(t->queue_lock, flags); - } } EXPORT_SYMBOL(blk_queue_stack_limits); @@ -545,7 +536,7 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->io_min = max(t->io_min, b->io_min); t->io_opt = lcm(t->io_opt, b->io_opt); - t->no_cluster |= b->no_cluster; + t->cluster &= b->cluster; t->discard_zeroes_data &= b->discard_zeroes_data; /* Physical block size a multiple of the logical block size? */ @@ -641,7 +632,6 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, sector_t offset) { struct request_queue *t = disk->queue; - struct request_queue *b = bdev_get_queue(bdev); if (bdev_stack_limits(&t->limits, bdev, offset >> 9) < 0) { char top[BDEVNAME_SIZE], bottom[BDEVNAME_SIZE]; @@ -652,17 +642,6 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, printk(KERN_NOTICE "%s: Warning: Device %s is misaligned\n", top, bottom); } - - if (!t->queue_lock) - WARN_ON_ONCE(1); - else if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) { - unsigned long flags; - - spin_lock_irqsave(t->queue_lock, flags); - if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) - queue_flag_clear(QUEUE_FLAG_CLUSTER, t); - spin_unlock_irqrestore(t->queue_lock, flags); - } } EXPORT_SYMBOL(disk_stack_limits); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 013457f47fdc..41fb69150b4d 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -119,7 +119,7 @@ static ssize_t queue_max_integrity_segments_show(struct request_queue *q, char * static ssize_t queue_max_segment_size_show(struct request_queue *q, char *page) { - if (test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags)) + if (blk_queue_cluster(q)) return queue_var_show(queue_max_segment_size(q), (page)); return queue_var_show(PAGE_CACHE_SIZE, (page)); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 90267f8d64ee..e2da1912a2cb 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1131,11 +1131,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, */ q->limits = *limits; - if (limits->no_cluster) - queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q); - else - queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q); - if (!dm_table_supports_discards(t)) queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q); else diff --git a/drivers/md/md.c b/drivers/md/md.c index 84c46a161927..52694d29663d 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4296,9 +4296,6 @@ static int md_alloc(dev_t dev, char *name) goto abort; mddev->queue->queuedata = mddev; - /* Can be unlocked because the queue is new: no concurrency */ - queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, mddev->queue); - blk_queue_make_request(mddev->queue, md_make_request); disk = alloc_disk(1 << shift); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index eafeeda6e194..9d7ba07dc5ef 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1642,9 +1642,8 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost, blk_queue_max_segment_size(q, dma_get_max_seg_size(dev)); - /* New queue, no concurrency on queue_flags */ if (!shost->use_clustering) - queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q); + q->limits.cluster = 0; /* * set a reasonable default alignment on word boundaries: the diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aae86fd10c4f..95aeeeb49e8b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -250,7 +250,7 @@ struct queue_limits { unsigned char misaligned; unsigned char discard_misaligned; - unsigned char no_cluster; + unsigned char cluster; signed char discard_zeroes_data; }; @@ -380,7 +380,6 @@ struct request_queue #endif }; -#define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */ #define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */ #define QUEUE_FLAG_STOPPED 2 /* queue is stopped */ #define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */ @@ -403,7 +402,6 @@ struct request_queue #define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ - (1 << QUEUE_FLAG_CLUSTER) | \ (1 << QUEUE_FLAG_STACKABLE) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ (1 << QUEUE_FLAG_ADD_RANDOM)) @@ -510,6 +508,11 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define rq_data_dir(rq) ((rq)->cmd_flags & 1) +static inline unsigned int blk_queue_cluster(struct request_queue *q) +{ + return q->limits.cluster; +} + /* * We regard a request as sync, if either a read or a sync write */ -- cgit v1.2.3 From 72d4cd9f38b5ed96b75df4c622be25e1c2648dd3 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 17 Dec 2010 08:34:20 +0100 Subject: block: max hardware sectors limit wrapper Implement blk_limits_max_hw_sectors() and make blk_queue_max_hw_sectors() a wrapper around it. DM needs this to avoid setting queue_limits' max_hw_sectors and max_sectors directly. dm_set_device_limits() now leverages blk_limits_max_hw_sectors() logic to establish the appropriate max_hw_sectors minimum (PAGE_SIZE). Fixes issue where DM was incorrectly setting max_sectors rather than max_hw_sectors (which caused dm_merge_bvec()'s max_hw_sectors check to be ineffective). Signed-off-by: Mike Snitzer Cc: stable@kernel.org Acked-by: Martin K. Petersen Signed-off-by: Jens Axboe --- block/blk-settings.c | 26 ++++++++++++++++++++------ drivers/md/dm-table.c | 5 ++--- include/linux/blkdev.h | 1 + 3 files changed, 23 insertions(+), 9 deletions(-) (limited to 'include') diff --git a/block/blk-settings.c b/block/blk-settings.c index e55f5fc4ca22..36c8c1f2af18 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -229,8 +229,8 @@ void blk_queue_bounce_limit(struct request_queue *q, u64 dma_mask) EXPORT_SYMBOL(blk_queue_bounce_limit); /** - * blk_queue_max_hw_sectors - set max sectors for a request for this queue - * @q: the request queue for the device + * blk_limits_max_hw_sectors - set hard and soft limit of max sectors for request + * @limits: the queue limits * @max_hw_sectors: max hardware sectors in the usual 512b unit * * Description: @@ -244,7 +244,7 @@ EXPORT_SYMBOL(blk_queue_bounce_limit); * per-device basis in /sys/block//queue/max_sectors_kb. * The soft limit can not exceed max_hw_sectors. **/ -void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors) +void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_sectors) { if ((max_hw_sectors << 9) < PAGE_CACHE_SIZE) { max_hw_sectors = 1 << (PAGE_CACHE_SHIFT - 9); @@ -252,9 +252,23 @@ void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_secto __func__, max_hw_sectors); } - q->limits.max_hw_sectors = max_hw_sectors; - q->limits.max_sectors = min_t(unsigned int, max_hw_sectors, - BLK_DEF_MAX_SECTORS); + limits->max_hw_sectors = max_hw_sectors; + limits->max_sectors = min_t(unsigned int, max_hw_sectors, + BLK_DEF_MAX_SECTORS); +} +EXPORT_SYMBOL(blk_limits_max_hw_sectors); + +/** + * blk_queue_max_hw_sectors - set max sectors for a request for this queue + * @q: the request queue for the device + * @max_hw_sectors: max hardware sectors in the usual 512b unit + * + * Description: + * See description for blk_limits_max_hw_sectors(). + **/ +void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors) +{ + blk_limits_max_hw_sectors(&q->limits, max_hw_sectors); } EXPORT_SYMBOL(blk_queue_max_hw_sectors); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index e2da1912a2cb..4d705cea0f8c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -517,9 +517,8 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, */ if (q->merge_bvec_fn && !ti->type->merge) - limits->max_sectors = - min_not_zero(limits->max_sectors, - (unsigned int) (PAGE_SIZE >> 9)); + blk_limits_max_hw_sectors(limits, + (unsigned int) (PAGE_SIZE >> 9)); return 0; } EXPORT_SYMBOL_GPL(dm_set_device_limits); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 95aeeeb49e8b..36ab42c9bb99 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -808,6 +808,7 @@ extern struct request_queue *blk_init_allocated_queue(struct request_queue *, extern void blk_cleanup_queue(struct request_queue *); extern void blk_queue_make_request(struct request_queue *, make_request_fn *); extern void blk_queue_bounce_limit(struct request_queue *, u64); +extern void blk_limits_max_hw_sectors(struct queue_limits *, unsigned int); extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int); extern void blk_queue_max_segments(struct request_queue *, unsigned short); extern void blk_queue_max_segment_size(struct request_queue *, unsigned int); -- cgit v1.2.3 From b6aa5901c7a2bd90d0b6b9866300d2648b2568f3 Mon Sep 17 00:00:00 2001 From: Henry C Chang Date: Wed, 15 Dec 2010 20:45:41 -0800 Subject: ceph: mark user pages dirty on direct-io reads For read operation, we have to set the argument _write_ of get_user_pages to 1 since we will write data to pages. Also, we need to SetPageDirty before releasing these pages. Signed-off-by: Henry C Chang Signed-off-by: Sage Weil --- fs/ceph/file.c | 8 ++++---- include/linux/ceph/libceph.h | 6 ++++-- net/ceph/pagevec.c | 11 +++++++---- 3 files changed, 15 insertions(+), 10 deletions(-) (limited to 'include') diff --git a/fs/ceph/file.c b/fs/ceph/file.c index e860d8f1bb45..7d0e4a82d898 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -384,7 +384,7 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data, if (file->f_flags & O_DIRECT) { num_pages = calc_pages_for((unsigned long)data, len); - pages = ceph_get_direct_page_vector(data, num_pages); + pages = ceph_get_direct_page_vector(data, num_pages, true); } else { num_pages = calc_pages_for(off, len); pages = ceph_alloc_page_vector(num_pages, GFP_NOFS); @@ -413,7 +413,7 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data, done: if (file->f_flags & O_DIRECT) - ceph_put_page_vector(pages, num_pages); + ceph_put_page_vector(pages, num_pages, true); else ceph_release_page_vector(pages, num_pages); dout("sync_read result %d\n", ret); @@ -522,7 +522,7 @@ more: return -ENOMEM; if (file->f_flags & O_DIRECT) { - pages = ceph_get_direct_page_vector(data, num_pages); + pages = ceph_get_direct_page_vector(data, num_pages, false); if (IS_ERR(pages)) { ret = PTR_ERR(pages); goto out; @@ -572,7 +572,7 @@ more: } if (file->f_flags & O_DIRECT) - ceph_put_page_vector(pages, num_pages); + ceph_put_page_vector(pages, num_pages, false); else if (file->f_flags & O_SYNC) ceph_release_page_vector(pages, num_pages); diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 9e76d35670d2..72c72bfccb88 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -227,8 +227,10 @@ extern int ceph_open_session(struct ceph_client *client); extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_get_direct_page_vector(const char __user *data, - int num_pages); -extern void ceph_put_page_vector(struct page **pages, int num_pages); + int num_pages, + bool write_page); +extern void ceph_put_page_vector(struct page **pages, int num_pages, + bool dirty); extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); extern int ceph_copy_user_to_page_vector(struct page **pages, diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c index ac34feeb2b3a..01947a5d03b7 100644 --- a/net/ceph/pagevec.c +++ b/net/ceph/pagevec.c @@ -13,7 +13,7 @@ * build a vector of user pages */ struct page **ceph_get_direct_page_vector(const char __user *data, - int num_pages) + int num_pages, bool write_page) { struct page **pages; int rc; @@ -24,7 +24,7 @@ struct page **ceph_get_direct_page_vector(const char __user *data, down_read(¤t->mm->mmap_sem); rc = get_user_pages(current, current->mm, (unsigned long)data, - num_pages, 0, 0, pages, NULL); + num_pages, write_page, 0, pages, NULL); up_read(¤t->mm->mmap_sem); if (rc < 0) goto fail; @@ -36,12 +36,15 @@ fail: } EXPORT_SYMBOL(ceph_get_direct_page_vector); -void ceph_put_page_vector(struct page **pages, int num_pages) +void ceph_put_page_vector(struct page **pages, int num_pages, bool dirty) { int i; - for (i = 0; i < num_pages; i++) + for (i = 0; i < num_pages; i++) { + if (dirty) + set_page_dirty_lock(pages[i]); put_page(pages[i]); + } kfree(pages); } EXPORT_SYMBOL(ceph_put_page_vector); -- cgit v1.2.3 From c0f5ac5426f7fd82b23dd5c6a1e633b290294a08 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 16 Dec 2010 10:38:41 -0700 Subject: Revert "resources: support allocating space within a region from the top down" This reverts commit e7f8567db9a7f6b3151b0b275e245c1cef0d9c70. Acked-by: H. Peter Anvin Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- Documentation/kernel-parameters.txt | 5 -- include/linux/ioport.h | 1 - kernel/resource.c | 98 ++----------------------------------- 3 files changed, 4 insertions(+), 100 deletions(-) (limited to 'include') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index cdd2a6e8a3b7..8b61c9360999 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2175,11 +2175,6 @@ and is between 256 and 4096 characters. It is defined in the file reset_devices [KNL] Force drivers to reset the underlying device during initialization. - resource_alloc_from_bottom - Allocate new resources from the beginning of available - space, not the end. If you need to use this, please - report a bug. - resume= [SWSUSP] Specify the partition device for software suspend diff --git a/include/linux/ioport.h b/include/linux/ioport.h index d377ea815d45..b22790268b64 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -112,7 +112,6 @@ struct resource_list { /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ extern struct resource ioport_resource; extern struct resource iomem_resource; -extern int resource_alloc_from_bottom; extern struct resource *request_resource_conflict(struct resource *root, struct resource *new); extern int request_resource(struct resource *root, struct resource *new); diff --git a/kernel/resource.c b/kernel/resource.c index 9fad33efd0db..560659f7baef 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -40,23 +40,6 @@ EXPORT_SYMBOL(iomem_resource); static DEFINE_RWLOCK(resource_lock); -/* - * By default, we allocate free space bottom-up. The architecture can request - * top-down by clearing this flag. The user can override the architecture's - * choice with the "resource_alloc_from_bottom" kernel boot option, but that - * should only be a debugging tool. - */ -int resource_alloc_from_bottom = 1; - -static __init int setup_alloc_from_bottom(char *s) -{ - printk(KERN_INFO - "resource: allocating from bottom-up; please report a bug\n"); - resource_alloc_from_bottom = 1; - return 0; -} -early_param("resource_alloc_from_bottom", setup_alloc_from_bottom); - static void *r_next(struct seq_file *m, void *v, loff_t *pos) { struct resource *p = v; @@ -396,75 +379,8 @@ static bool resource_contains(struct resource *res1, struct resource *res2) return res1->start <= res2->start && res1->end >= res2->end; } -/* - * Find the resource before "child" in the sibling list of "root" children. - */ -static struct resource *find_sibling_prev(struct resource *root, struct resource *child) -{ - struct resource *this; - - for (this = root->child; this; this = this->sibling) - if (this->sibling == child) - return this; - - return NULL; -} - -/* - * Find empty slot in the resource tree given range and alignment. - * This version allocates from the end of the root resource first. - */ -static int find_resource_from_top(struct resource *root, struct resource *new, - resource_size_t size, resource_size_t min, - resource_size_t max, resource_size_t align, - resource_size_t (*alignf)(void *, - const struct resource *, - resource_size_t, - resource_size_t), - void *alignf_data) -{ - struct resource *this; - struct resource tmp, avail, alloc; - - tmp.start = root->end; - tmp.end = root->end; - - this = find_sibling_prev(root, NULL); - for (;;) { - if (this) { - if (this->end < root->end) - tmp.start = this->end + 1; - } else - tmp.start = root->start; - - resource_clip(&tmp, min, max); - - /* Check for overflow after ALIGN() */ - avail = *new; - avail.start = ALIGN(tmp.start, align); - avail.end = tmp.end; - if (avail.start >= tmp.start) { - alloc.start = alignf(alignf_data, &avail, size, align); - alloc.end = alloc.start + size - 1; - if (resource_contains(&avail, &alloc)) { - new->start = alloc.start; - new->end = alloc.end; - return 0; - } - } - - if (!this || this->start == root->start) - break; - - tmp.end = this->start - 1; - this = find_sibling_prev(root, this); - } - return -EBUSY; -} - /* * Find empty slot in the resource tree given range and alignment. - * This version allocates from the beginning of the root resource first. */ static int find_resource(struct resource *root, struct resource *new, resource_size_t size, resource_size_t min, @@ -480,15 +396,14 @@ static int find_resource(struct resource *root, struct resource *new, tmp.start = root->start; /* - * Skip past an allocated resource that starts at 0, since the - * assignment of this->start - 1 to tmp->end below would cause an - * underflow. + * Skip past an allocated resource that starts at 0, since the assignment + * of this->start - 1 to tmp->end below would cause an underflow. */ if (this && this->start == 0) { tmp.start = this->end + 1; this = this->sibling; } - for (;;) { + for(;;) { if (this) tmp.end = this->start - 1; else @@ -509,10 +424,8 @@ static int find_resource(struct resource *root, struct resource *new, return 0; } } - if (!this) break; - tmp.start = this->end + 1; this = this->sibling; } @@ -545,10 +458,7 @@ int allocate_resource(struct resource *root, struct resource *new, alignf = simple_align_resource; write_lock(&resource_lock); - if (resource_alloc_from_bottom) - err = find_resource(root, new, size, min, max, align, alignf, alignf_data); - else - err = find_resource_from_top(root, new, size, min, max, align, alignf, alignf_data); + err = find_resource(root, new, size, min, max, align, alignf, alignf_data); if (err >= 0 && __request_resource(root, new)) err = -EBUSY; write_unlock(&resource_lock); -- cgit v1.2.3 From fcb119183c73bf0781009713f303e28b1fb13d3e Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 16 Dec 2010 10:38:46 -0700 Subject: resources: add arch hook for preventing allocation in reserved areas This adds arch_remove_reservations(), which an arch can implement if it needs to protect part of the address space from allocation. Sometimes that can be done by just putting a region in the resource tree, but there are cases where that doesn't work well. For example, x86 BIOS E820 reservations are not related to devices, so they may overlap part of, all of, or more than a device resource, so they may not end up at the correct spot in the resource tree. Acked-by: H. Peter Anvin Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- include/linux/ioport.h | 1 + kernel/resource.c | 6 ++++++ 2 files changed, 7 insertions(+) (limited to 'include') diff --git a/include/linux/ioport.h b/include/linux/ioport.h index b22790268b64..e9bb22cba764 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -123,6 +123,7 @@ extern void reserve_region_with_split(struct resource *root, extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new); extern int insert_resource(struct resource *parent, struct resource *new); extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new); +extern void arch_remove_reservations(struct resource *avail); extern int allocate_resource(struct resource *root, struct resource *new, resource_size_t size, resource_size_t min, resource_size_t max, resource_size_t align, diff --git a/kernel/resource.c b/kernel/resource.c index 560659f7baef..798e2fae2a06 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -357,6 +357,10 @@ int __weak page_is_ram(unsigned long pfn) return walk_system_ram_range(pfn, 1, NULL, __is_ram) == 1; } +void __weak arch_remove_reservations(struct resource *avail) +{ +} + static resource_size_t simple_align_resource(void *data, const struct resource *avail, resource_size_t size, @@ -394,6 +398,7 @@ static int find_resource(struct resource *root, struct resource *new, struct resource *this = root->child; struct resource tmp = *new, avail, alloc; + tmp.flags = new->flags; tmp.start = root->start; /* * Skip past an allocated resource that starts at 0, since the assignment @@ -410,6 +415,7 @@ static int find_resource(struct resource *root, struct resource *new, tmp.end = root->end; resource_clip(&tmp, min, max); + arch_remove_reservations(&tmp); /* Check for overflow after ALIGN() */ avail = *new; -- cgit v1.2.3 From b8da46d3d55807037b58f14621a0949f18053bde Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Mon, 20 Dec 2010 00:29:32 -0500 Subject: clarify a usage constraint for cnt32_to_63() The cnt32_to_63 algorithm relies on proper counter data evaluation ordering to work properly. This was missing from the provided documentation. Let's augment the documentation with the missing usage constraint and fix the only instance that got it wrong. Signed-off-by: Nicolas Pitre Acked-by: David Howells Signed-off-by: Linus Torvalds --- arch/mn10300/kernel/time.c | 10 +++------- include/linux/cnt32_to_63.h | 20 +++++++++++++++++++- 2 files changed, 22 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c index f860a340acc9..75da468090b9 100644 --- a/arch/mn10300/kernel/time.c +++ b/arch/mn10300/kernel/time.c @@ -40,21 +40,17 @@ unsigned long long sched_clock(void) unsigned long long ll; unsigned l[2]; } tsc64, result; - unsigned long tsc, tmp; + unsigned long tmp; unsigned product[3]; /* 96-bit intermediate value */ /* cnt32_to_63() is not safe with preemption */ preempt_disable(); - /* read the TSC value - */ - tsc = get_cycles(); - - /* expand to 64-bits. + /* expand the tsc to 64-bits. * - sched_clock() must be called once a minute or better or the * following will go horribly wrong - see cnt32_to_63() */ - tsc64.ll = cnt32_to_63(tsc) & 0x7fffffffffffffffULL; + tsc64.ll = cnt32_to_63(get_cycles()) & 0x7fffffffffffffffULL; preempt_enable(); diff --git a/include/linux/cnt32_to_63.h b/include/linux/cnt32_to_63.h index 7605fdd1eb65..e3d8bf26e5eb 100644 --- a/include/linux/cnt32_to_63.h +++ b/include/linux/cnt32_to_63.h @@ -61,13 +61,31 @@ union cnt32_to_63 { * * 2) this code must not be preempted for a duration longer than the * 32-bit counter half period minus the longest period between two - * calls to this code. + * calls to this code; * * Those requirements ensure proper update to the state bit in memory. * This is usually not a problem in practice, but if it is then a kernel * timer should be scheduled to manage for this code to be executed often * enough. * + * And finally: + * + * 3) the cnt_lo argument must be seen as a globally incrementing value, + * meaning that it should be a direct reference to the counter data which + * can be evaluated according to a specific ordering within the macro, + * and not the result of a previous evaluation stored in a variable. + * + * For example, this is wrong: + * + * u32 partial = get_hw_count(); + * u64 full = cnt32_to_63(partial); + * return full; + * + * This is fine: + * + * u64 full = cnt32_to_63(get_hw_count()); + * return full; + * * Note that the top bit (bit 63) in the returned value should be considered * as garbage. It is not cleared here because callers are likely to use a * multiplier on the returned value which can get rid of the top bit -- cgit v1.2.3