From 8e7d2b2c6ecd3c21a54b877eae3d5be48292e6b5 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Fri, 8 May 2009 16:13:25 -0700 Subject: drm/i915: allocate large pointer arrays with vmalloc For awhile now, many of the GEM code paths have allocated page or object arrays with the slab allocator. This is nice and fast, but won't work well if memory is fragmented, since the slab allocator works with physically contiguous memory (i.e. order > 2 allocations are likely to fail fairly early after booting and doing some work). This patch works around the issue by falling back to vmalloc for >PAGE_SIZE allocations. This is ugly, but much less work than chaining a bunch of pages together by hand (suprisingly there's not a bunch of generic kernel helpers for this yet afaik). vmalloc space is somewhat precious on 32 bit kernels, but our allocations shouldn't be big enough to cause problems, though they're routinely more than a page. Note that this patch doesn't address the unchecked alloc-based-on-ioctl-args in GEM; that needs to be fixed in a separate patch. Also, I've deliberately ignored the DRM's "area" junk. I don't think anyone actually uses it anymore and I'm hoping it gets ripped out soon. [Updated: removed size arg to new free function. We could unify the free functions as well once the DRM mem tracking is ripped out.] fd.o bug #20152 (part 1/3) Signed-off-by: Jesse Barnes Signed-off-by: Eric Anholt --- include/drm/drmP.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include') diff --git a/include/drm/drmP.h b/include/drm/drmP.h index c8c422151431..b84d8ae35e6f 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1519,6 +1519,30 @@ static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area) { return kcalloc(nmemb, size, GFP_KERNEL); } + +static __inline__ void *drm_calloc_large(size_t nmemb, size_t size) +{ + u8 *addr; + + if (size <= PAGE_SIZE) + return kcalloc(nmemb, size, GFP_KERNEL); + + addr = vmalloc(nmemb * size); + if (!addr) + return NULL; + + memset(addr, 0, nmemb * size); + + return addr; +} + +static __inline void drm_free_large(void *ptr) +{ + if (!is_vmalloc_addr(ptr)) + return kfree(ptr); + + vfree(ptr); +} #else extern void *drm_alloc(size_t size, int area); extern void drm_free(void *pt, size_t size, int area); -- cgit v1.2.1 From df391e0eda1e678add56a8e34226edf05d89af6a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 23 May 2009 09:51:20 -0700 Subject: Input: multitouch - add tracking ID to the protocol MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are a few multi-touch devices that support finger tracking well in hardware, Stantum being the prime example. By exposing the tracking ID in the MT protocol, evdev bandwidth and cpu usage in user space can be reduced. This patch adds the ABS_MT_TRACKING_ID to the MT protocol. Signed-off-by: Henrik Rydberg Tested-by: Stéphane Chatty Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/input.h b/include/linux/input.h index 0e6ff5de3588..6fed4f6a9c9e 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -656,6 +656,7 @@ struct input_absinfo { #define ABS_MT_POSITION_Y 0x36 /* Center Y ellipse position */ #define ABS_MT_TOOL_TYPE 0x37 /* Type of touching device */ #define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */ +#define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */ #define ABS_MAX 0x3f #define ABS_CNT (ABS_MAX+1) -- cgit v1.2.1 From bfcaa50270e18f35220a11d46e98fc6232c24606 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Mon, 25 May 2009 17:23:15 +0200 Subject: netfilter: nf_ct_tcp: fix accepting invalid RST segments Robert L Mathews discovered that some clients send evil TCP RST segments, which are accepted by netfilter conntrack but discarded by the destination. Thus the conntrack entry is destroyed but the destination retransmits data until timeout. The same technique, i.e. sending properly crafted RST segments, can easily be used to bypass connlimit/connbytes based restrictions (the sample script written by Robert can be found in the netfilter mailing list archives). The patch below adds a new flag and new field to struct ip_ct_tcp_state so that checking RST segments can be made more strict and thus TCP conntrack can catch the invalid ones: the RST segment is accepted only if its sequence number higher than or equal to the highest ack we seen from the other direction. (The last_ack field cannot be reused because it is used to catch resent packets.) Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/nf_conntrack_tcp.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/netfilter/nf_conntrack_tcp.h b/include/linux/netfilter/nf_conntrack_tcp.h index 3066789b972a..b2f384d42611 100644 --- a/include/linux/netfilter/nf_conntrack_tcp.h +++ b/include/linux/netfilter/nf_conntrack_tcp.h @@ -35,6 +35,9 @@ enum tcp_conntrack { /* Has unacknowledged data */ #define IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED 0x10 +/* The field td_maxack has been set */ +#define IP_CT_TCP_FLAG_MAXACK_SET 0x20 + struct nf_ct_tcp_flags { __u8 flags; __u8 mask; @@ -46,6 +49,7 @@ struct ip_ct_tcp_state { u_int32_t td_end; /* max of seq + len */ u_int32_t td_maxend; /* max of ack + max(win, 1) */ u_int32_t td_maxwin; /* max(win) */ + u_int32_t td_maxack; /* max of ack */ u_int8_t td_scale; /* window scale factor */ u_int8_t flags; /* per direction options */ }; -- cgit v1.2.1 From 2f102607ac77354b02a76cf2748598ce9f270f08 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 27 May 2009 23:59:58 -0400 Subject: i7300_idle: allow testing on i5000-series hardware w/o re-compile Testing the i7300_idle driver on i5000-series hardware required an edit to i7300_idle.h to "#define SUPPORT_I5000 1" and a re-build of both i7300_idle and ioat_dma. Replace that build-time scheme with a load-time module parameter: "7300_idle.forceload=1" to make it easier to test the driver on hardware that while not officially validated, works fine and is much more commonly available. By default (no modparam) the driver will continue to load only on the i7300. Note that ioat_dma runs a copy of i7300_idle's probe routine to know to reserve an IOAT channel for i7300_idle. This change makes ioat_dma do that always on the i5000, just like it does on the i7300. Signed-off-by: Len Brown Acked-by: Andrew Henroid --- include/linux/i7300_idle.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'include') diff --git a/include/linux/i7300_idle.h b/include/linux/i7300_idle.h index 05a80c44513c..1587b7dec505 100644 --- a/include/linux/i7300_idle.h +++ b/include/linux/i7300_idle.h @@ -16,35 +16,33 @@ struct fbd_ioat { unsigned int vendor; unsigned int ioat_dev; + unsigned int enabled; }; /* * The i5000 chip-set has the same hooks as the i7300 - * but support is disabled by default because this driver - * has not been validated on that platform. + * but it is not enabled by default and must be manually + * manually enabled with "forceload=1" because it is + * only lightly validated. */ -#define SUPPORT_I5000 0 static const struct fbd_ioat fbd_ioat_list[] = { - {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB}, -#if SUPPORT_I5000 - {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT}, -#endif + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB, 1}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT, 0}, {0, 0} }; /* table of devices that work with this driver */ static const struct pci_device_id pci_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) }, -#if SUPPORT_I5000 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, -#endif { } /* Terminating entry */ }; /* Check for known platforms with I/O-AT */ static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev, - struct pci_dev **ioat_dev) + struct pci_dev **ioat_dev, + int enable_all) { int i; struct pci_dev *memdev, *dmadev; @@ -69,6 +67,8 @@ static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev, for (i = 0; fbd_ioat_list[i].vendor != 0; i++) { if (dmadev->vendor == fbd_ioat_list[i].vendor && dmadev->device == fbd_ioat_list[i].ioat_dev) { + if (!(fbd_ioat_list[i].enabled || enable_all)) + continue; if (fbd_dev) *fbd_dev = memdev; if (ioat_dev) -- cgit v1.2.1 From b2e1feaf0af6b8a826b86748a19ddc2013ab7dbd Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Thu, 28 May 2009 14:34:20 -0700 Subject: cred: #include init.h in cred.h linux/cred.h can't be included as first header (alphabetical order) because it uses __init which is enough to break compilation on some archs. Signed-off-by: Alexey Dobriyan Acked-by: James Morris Acked-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cred.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/cred.h b/include/linux/cred.h index 3282ee4318e7..4fa999696310 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -13,6 +13,7 @@ #define _LINUX_CRED_H #include +#include #include #include -- cgit v1.2.1 From e767e0561d7fd2333df1921f1ab4176211f9036b Mon Sep 17 00:00:00 2001 From: Daisuke Nishimura Date: Thu, 28 May 2009 14:34:28 -0700 Subject: memcg: fix deadlock between lock_page_cgroup and mapping tree_lock mapping->tree_lock can be acquired from interrupt context. Then, following dead lock can occur. Assume "A" as a page. CPU0: lock_page_cgroup(A) interrupted -> take mapping->tree_lock. CPU1: take mapping->tree_lock -> lock_page_cgroup(A) This patch tries to fix above deadlock by moving memcg's hook to out of mapping->tree_lock. charge/uncharge of pagecache/swapcache is protected by page lock, not tree_lock. After this patch, lock_page_cgroup() is not called under mapping->tree_lock. Signed-off-by: KAMEZAWA Hiroyuki Signed-off-by: Daisuke Nishimura Cc: Balbir Singh Cc: Daisuke Nishimura Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/linux/swap.h b/include/linux/swap.h index 62d81435347a..d476aad3ff57 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -437,6 +437,11 @@ static inline int mem_cgroup_cache_charge_swapin(struct page *page, return 0; } +static inline void +mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent) +{ +} + #endif /* CONFIG_SWAP */ #endif /* __KERNEL__*/ #endif /* _LINUX_SWAP_H */ -- cgit v1.2.1 From 52bb25a620e1925bb53d41d0ed28571b3de98a31 Mon Sep 17 00:00:00 2001 From: Jaswinder Singh Rajput Date: Mon, 1 Jun 2009 06:21:13 +0000 Subject: headers_check fix: linux/auto_fs.h fix the following 'make headers_check' warnings: usr/include/linux/auto_fs.h:17: include of is preferred over Signed-off-by: Jaswinder Singh Rajput --- include/linux/auto_fs.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/auto_fs.h b/include/linux/auto_fs.h index 63265852b7d1..7b09c8348fd3 100644 --- a/include/linux/auto_fs.h +++ b/include/linux/auto_fs.h @@ -14,13 +14,12 @@ #ifndef _LINUX_AUTO_FS_H #define _LINUX_AUTO_FS_H +#include #ifdef __KERNEL__ #include #include -#include #include #else -#include #include #endif /* __KERNEL__ */ -- cgit v1.2.1 From d280cc989ad591607e812cd5c5dfde702b5f191a Mon Sep 17 00:00:00 2001 From: Jaswinder Singh Rajput Date: Mon, 1 Jun 2009 06:23:25 +0000 Subject: headers_check fix: linux/net_dropmon.h fix the following 'make headers_check' warnings: usr/include/linux/net_dropmon.h:7: found __[us]{8,16,32,64} type without #include Signed-off-by: Jaswinder Singh Rajput --- include/linux/net_dropmon.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/net_dropmon.h b/include/linux/net_dropmon.h index 0217fb81a630..0e2e100c44a2 100644 --- a/include/linux/net_dropmon.h +++ b/include/linux/net_dropmon.h @@ -1,6 +1,7 @@ #ifndef __NET_DROPMON_H #define __NET_DROPMON_H +#include #include struct net_dm_drop_point { -- cgit v1.2.1 From 05ad709d04799125ed85dd816fdb558258102172 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 2 Jun 2009 16:58:10 +0100 Subject: parport: quickfix the proc registration bug Ideally we should have a directory of drivers and a link to the 'active' driver. For now just show the first device which is effectively the existing semantics without a warning. This is an update on the original buggy patch that I then forgot to resubmit. Confusingly it was proposed by Red Hat, written by Etched Pixels fixed and submitted by Intel ... Resolves-Bug: http://bugzilla.kernel.org/show_bug.cgi?id=9749 Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds --- include/linux/parport.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/parport.h b/include/linux/parport.h index e1f83c5065c5..38a423ed3c01 100644 --- a/include/linux/parport.h +++ b/include/linux/parport.h @@ -324,6 +324,10 @@ struct parport { int spintime; atomic_t ref_count; + unsigned long devflags; +#define PARPORT_DEVPROC_REGISTERED 0 + struct pardevice *proc_device; /* Currently register proc device */ + struct list_head full_list; struct parport *slaves[3]; }; -- cgit v1.2.1