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-rw-r--r--lib/Kconfig14
-rw-r--r--lib/Kconfig.debug15
-rw-r--r--lib/Makefile3
-rw-r--r--lib/bitmap.c2
-rw-r--r--lib/checksum.c13
-rw-r--r--lib/cordic.c101
-rw-r--r--lib/crc8.c86
-rw-r--r--lib/debugobjects.c2
-rw-r--r--lib/iomap.c4
-rw-r--r--lib/kobject.c26
-rw-r--r--lib/plist.c7
-rw-r--r--lib/swiotlb.c5
-rw-r--r--lib/vsprintf.c7
-rw-r--r--lib/xz/xz_private.h2
14 files changed, 244 insertions, 43 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 830181cc7a83..32f3e5ae2be5 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -79,6 +79,13 @@ config LIBCRC32C
require M here. See Castagnoli93.
Module will be libcrc32c.
+config CRC8
+ tristate "CRC8 function"
+ help
+ This option provides CRC8 function. Drivers may select this
+ when they need to do cyclic redundancy check according CRC8
+ algorithm. Module will be called crc8.
+
config AUDIT_GENERIC
bool
depends on AUDIT && !AUDIT_ARCH
@@ -262,4 +269,11 @@ config AVERAGE
If unsure, say N.
+config CORDIC
+ tristate "Cordic function"
+ help
+ The option provides arithmetic function using cordic algorithm
+ so its calculations are in fixed point. Modules can select this
+ when they require this function. Module will be called cordic.
+
endmenu
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 28afa4c5333c..c0cb9c4bc46d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -227,7 +227,7 @@ config BOOTPARAM_SOFTLOCKUP_PANIC_VALUE
config DETECT_HUNG_TASK
bool "Detect Hung Tasks"
depends on DEBUG_KERNEL
- default DETECT_SOFTLOCKUP
+ default LOCKUP_DETECTOR
help
Say Y here to enable the kernel to detect "hung tasks",
which are bugs that cause the task to be stuck in
@@ -648,12 +648,15 @@ config TRACE_IRQFLAGS
Enables hooks to interrupt enabling and disabling for
either tracing or lock debugging.
-config DEBUG_SPINLOCK_SLEEP
- bool "Spinlock debugging: sleep-inside-spinlock checking"
+config DEBUG_ATOMIC_SLEEP
+ bool "Sleep inside atomic section checking"
+ select PREEMPT_COUNT
depends on DEBUG_KERNEL
help
If you say Y here, various routines which may sleep will become very
- noisy if they are called with a spinlock held.
+ noisy if they are called inside atomic sections: when a spinlock is
+ held, inside an rcu read side critical section, inside preempt disabled
+ sections, inside an interrupt, etc...
config DEBUG_LOCKING_API_SELFTESTS
bool "Locking API boot-time self-tests"
@@ -697,7 +700,7 @@ config DEBUG_BUGVERBOSE
bool "Verbose BUG() reporting (adds 70K)" if DEBUG_KERNEL && EXPERT
depends on BUG
depends on ARM || AVR32 || M32R || M68K || SPARC32 || SPARC64 || \
- FRV || SUPERH || GENERIC_BUG || BLACKFIN || MN10300
+ FRV || SUPERH || GENERIC_BUG || BLACKFIN || MN10300 || TILE
default y
help
Say Y here to make BUG() panics output the file name and line number
@@ -866,7 +869,7 @@ config BOOT_PRINTK_DELAY
system, and then set "lpj=M" before setting "boot_delay=N".
NOTE: Using this option may adversely affect SMP systems.
I.e., processors other than the first one may not boot up.
- BOOT_PRINTK_DELAY also may cause DETECT_SOFTLOCKUP to detect
+ BOOT_PRINTK_DELAY also may cause LOCKUP_DETECTOR to detect
what it believes to be lockup conditions.
config RCU_TORTURE_TEST
diff --git a/lib/Makefile b/lib/Makefile
index 6b597fdb1898..892f4e282ea1 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o
obj-$(CONFIG_CRC32) += crc32.o
obj-$(CONFIG_CRC7) += crc7.o
obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
+obj-$(CONFIG_CRC8) += crc8.o
obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
@@ -112,6 +113,8 @@ obj-$(CONFIG_AVERAGE) += average.o
obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
+obj-$(CONFIG_CORDIC) += cordic.o
+
hostprogs-y := gen_crc32table
clean-files := crc32table.h
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 41baf02924e6..3f3b68199d74 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -572,7 +572,7 @@ EXPORT_SYMBOL(bitmap_scnlistprintf);
/**
* __bitmap_parselist - convert list format ASCII string to bitmap
- * @bp: read nul-terminated user string from this buffer
+ * @buf: read nul-terminated user string from this buffer
* @buflen: buffer size in bytes. If string is smaller than this
* then it must be terminated with a \0.
* @is_user: location of buffer, 0 indicates kernel space
diff --git a/lib/checksum.c b/lib/checksum.c
index 097508732f34..8df2f91e6d98 100644
--- a/lib/checksum.c
+++ b/lib/checksum.c
@@ -49,7 +49,7 @@ static inline unsigned short from32to16(unsigned int x)
static unsigned int do_csum(const unsigned char *buff, int len)
{
- int odd, count;
+ int odd;
unsigned int result = 0;
if (len <= 0)
@@ -64,25 +64,22 @@ static unsigned int do_csum(const unsigned char *buff, int len)
len--;
buff++;
}
- count = len >> 1; /* nr of 16-bit words.. */
- if (count) {
+ if (len >= 2) {
if (2 & (unsigned long) buff) {
result += *(unsigned short *) buff;
- count--;
len -= 2;
buff += 2;
}
- count >>= 1; /* nr of 32-bit words.. */
- if (count) {
+ if (len >= 4) {
+ const unsigned char *end = buff + ((unsigned)len & ~3);
unsigned int carry = 0;
do {
unsigned int w = *(unsigned int *) buff;
- count--;
buff += 4;
result += carry;
result += w;
carry = (w > result);
- } while (count);
+ } while (buff < end);
result += carry;
result = (result & 0xffff) + (result >> 16);
}
diff --git a/lib/cordic.c b/lib/cordic.c
new file mode 100644
index 000000000000..aa27a88d7e04
--- /dev/null
+++ b/lib/cordic.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2011 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/module.h>
+#include <linux/cordic.h>
+
+#define CORDIC_ANGLE_GEN 39797
+#define CORDIC_PRECISION_SHIFT 16
+#define CORDIC_NUM_ITER (CORDIC_PRECISION_SHIFT + 2)
+
+#define FIXED(X) ((s32)((X) << CORDIC_PRECISION_SHIFT))
+#define FLOAT(X) (((X) >= 0) \
+ ? ((((X) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1) \
+ : -((((-(X)) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1))
+
+static const s32 arctan_table[] = {
+ 2949120,
+ 1740967,
+ 919879,
+ 466945,
+ 234379,
+ 117304,
+ 58666,
+ 29335,
+ 14668,
+ 7334,
+ 3667,
+ 1833,
+ 917,
+ 458,
+ 229,
+ 115,
+ 57,
+ 29
+};
+
+/*
+ * cordic_calc_iq() - calculates the i/q coordinate for given angle
+ *
+ * theta: angle in degrees for which i/q coordinate is to be calculated
+ * coord: function output parameter holding the i/q coordinate
+ */
+struct cordic_iq cordic_calc_iq(s32 theta)
+{
+ struct cordic_iq coord;
+ s32 angle, valtmp;
+ unsigned iter;
+ int signx = 1;
+ int signtheta;
+
+ coord.i = CORDIC_ANGLE_GEN;
+ coord.q = 0;
+ angle = 0;
+
+ theta = FIXED(theta);
+ signtheta = (theta < 0) ? -1 : 1;
+ theta = ((theta + FIXED(180) * signtheta) % FIXED(360)) -
+ FIXED(180) * signtheta;
+
+ if (FLOAT(theta) > 90) {
+ theta -= FIXED(180);
+ signx = -1;
+ } else if (FLOAT(theta) < -90) {
+ theta += FIXED(180);
+ signx = -1;
+ }
+
+ for (iter = 0; iter < CORDIC_NUM_ITER; iter++) {
+ if (theta > angle) {
+ valtmp = coord.i - (coord.q >> iter);
+ coord.q += (coord.i >> iter);
+ angle += arctan_table[iter];
+ } else {
+ valtmp = coord.i + (coord.q >> iter);
+ coord.q -= (coord.i >> iter);
+ angle -= arctan_table[iter];
+ }
+ coord.i = valtmp;
+ }
+
+ coord.i *= signx;
+ coord.q *= signx;
+ return coord;
+}
+EXPORT_SYMBOL(cordic_calc_iq);
+
+MODULE_DESCRIPTION("Cordic functions");
+MODULE_AUTHOR("Broadcom Corporation");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/lib/crc8.c b/lib/crc8.c
new file mode 100644
index 000000000000..87b59cafdb83
--- /dev/null
+++ b/lib/crc8.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2011 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/crc8.h>
+#include <linux/printk.h>
+
+/*
+ * crc8_populate_msb - fill crc table for given polynomial in reverse bit order.
+ *
+ * table: table to be filled.
+ * polynomial: polynomial for which table is to be filled.
+ */
+void crc8_populate_msb(u8 table[CRC8_TABLE_SIZE], u8 polynomial)
+{
+ int i, j;
+ const u8 msbit = 0x80;
+ u8 t = msbit;
+
+ table[0] = 0;
+
+ for (i = 1; i < CRC8_TABLE_SIZE; i *= 2) {
+ t = (t << 1) ^ (t & msbit ? polynomial : 0);
+ for (j = 0; j < i; j++)
+ table[i+j] = table[j] ^ t;
+ }
+}
+EXPORT_SYMBOL(crc8_populate_msb);
+
+/*
+ * crc8_populate_lsb - fill crc table for given polynomial in regular bit order.
+ *
+ * table: table to be filled.
+ * polynomial: polynomial for which table is to be filled.
+ */
+void crc8_populate_lsb(u8 table[CRC8_TABLE_SIZE], u8 polynomial)
+{
+ int i, j;
+ u8 t = 1;
+
+ table[0] = 0;
+
+ for (i = (CRC8_TABLE_SIZE >> 1); i; i >>= 1) {
+ t = (t >> 1) ^ (t & 1 ? polynomial : 0);
+ for (j = 0; j < CRC8_TABLE_SIZE; j += 2*i)
+ table[i+j] = table[j] ^ t;
+ }
+}
+EXPORT_SYMBOL(crc8_populate_lsb);
+
+/*
+ * crc8 - calculate a crc8 over the given input data.
+ *
+ * table: crc table used for calculation.
+ * pdata: pointer to data buffer.
+ * nbytes: number of bytes in data buffer.
+ * crc: previous returned crc8 value.
+ */
+u8 crc8(const u8 table[CRC8_TABLE_SIZE], u8 *pdata, size_t nbytes, u8 crc)
+{
+ /* loop over the buffer data */
+ while (nbytes-- > 0)
+ crc = table[(crc ^ *pdata++) & 0xff];
+
+ return crc;
+}
+EXPORT_SYMBOL(crc8);
+
+MODULE_DESCRIPTION("CRC8 (by Williams, Ross N.) function");
+MODULE_AUTHOR("Broadcom Corporation");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 9d86e45086f5..a78b7c6e042c 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -198,7 +198,7 @@ static void free_object(struct debug_obj *obj)
* initialized:
*/
if (obj_pool_free > ODEBUG_POOL_SIZE && obj_cache)
- sched = !work_pending(&debug_obj_work);
+ sched = keventd_up() && !work_pending(&debug_obj_work);
hlist_add_head(&obj->node, &obj_pool);
obj_pool_free++;
obj_pool_used--;
diff --git a/lib/iomap.c b/lib/iomap.c
index d32229385151..5dbcb4b2d864 100644
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -224,6 +224,7 @@ EXPORT_SYMBOL(iowrite8_rep);
EXPORT_SYMBOL(iowrite16_rep);
EXPORT_SYMBOL(iowrite32_rep);
+#ifdef CONFIG_HAS_IOPORT
/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
@@ -238,7 +239,9 @@ void ioport_unmap(void __iomem *addr)
}
EXPORT_SYMBOL(ioport_map);
EXPORT_SYMBOL(ioport_unmap);
+#endif /* CONFIG_HAS_IOPORT */
+#ifdef CONFIG_PCI
/**
* pci_iomap - create a virtual mapping cookie for a PCI BAR
* @dev: PCI device that owns the BAR
@@ -280,3 +283,4 @@ void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
}
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);
+#endif /* CONFIG_PCI */
diff --git a/lib/kobject.c b/lib/kobject.c
index 82dc34c095c2..640bd98a4c8a 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -948,14 +948,14 @@ const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj)
}
-const void *kobj_ns_current(enum kobj_ns_type type)
+void *kobj_ns_grab_current(enum kobj_ns_type type)
{
- const void *ns = NULL;
+ void *ns = NULL;
spin_lock(&kobj_ns_type_lock);
if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) &&
kobj_ns_ops_tbl[type])
- ns = kobj_ns_ops_tbl[type]->current_ns();
+ ns = kobj_ns_ops_tbl[type]->grab_current_ns();
spin_unlock(&kobj_ns_type_lock);
return ns;
@@ -987,23 +987,15 @@ const void *kobj_ns_initial(enum kobj_ns_type type)
return ns;
}
-/*
- * kobj_ns_exit - invalidate a namespace tag
- *
- * @type: the namespace type (i.e. KOBJ_NS_TYPE_NET)
- * @ns: the actual namespace being invalidated
- *
- * This is called when a tag is no longer valid. For instance,
- * when a network namespace exits, it uses this helper to
- * make sure no sb's sysfs_info points to the now-invalidated
- * netns.
- */
-void kobj_ns_exit(enum kobj_ns_type type, const void *ns)
+void kobj_ns_drop(enum kobj_ns_type type, void *ns)
{
- sysfs_exit_ns(type, ns);
+ spin_lock(&kobj_ns_type_lock);
+ if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) &&
+ kobj_ns_ops_tbl[type] && kobj_ns_ops_tbl[type]->drop_ns)
+ kobj_ns_ops_tbl[type]->drop_ns(ns);
+ spin_unlock(&kobj_ns_type_lock);
}
-
EXPORT_SYMBOL(kobject_get);
EXPORT_SYMBOL(kobject_put);
EXPORT_SYMBOL(kobject_del);
diff --git a/lib/plist.c b/lib/plist.c
index 0ae7e6431726..a0a4da489c22 100644
--- a/lib/plist.c
+++ b/lib/plist.c
@@ -56,11 +56,6 @@ static void plist_check_list(struct list_head *top)
static void plist_check_head(struct plist_head *head)
{
- WARN_ON(head != &test_head && !head->rawlock && !head->spinlock);
- if (head->rawlock)
- WARN_ON_SMP(!raw_spin_is_locked(head->rawlock));
- if (head->spinlock)
- WARN_ON_SMP(!spin_is_locked(head->spinlock));
if (!plist_head_empty(head))
plist_check_list(&plist_first(head)->prio_list);
plist_check_list(&head->node_list);
@@ -180,7 +175,7 @@ static int __init plist_test(void)
unsigned int r = local_clock();
printk(KERN_INFO "start plist test\n");
- plist_head_init(&test_head, NULL);
+ plist_head_init(&test_head);
for (i = 0; i < ARRAY_SIZE(test_node); i++)
plist_node_init(test_node + i, 0);
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 93ca08b8a451..99093b396145 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -110,6 +110,11 @@ setup_io_tlb_npages(char *str)
__setup("swiotlb=", setup_io_tlb_npages);
/* make io_tlb_overflow tunable too? */
+unsigned long swioltb_nr_tbl(void)
+{
+ return io_tlb_nslabs;
+}
+
/* Note that this doesn't work with highmem page */
static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev,
volatile void *address)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index c11205688fb4..75bace7acefb 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -666,6 +666,8 @@ char *ip6_compressed_string(char *p, const char *addr)
colonpos = i;
}
}
+ if (longest == 1) /* don't compress a single 0 */
+ colonpos = -1;
/* emit address */
for (i = 0; i < range; i++) {
@@ -826,7 +828,7 @@ int kptr_restrict __read_mostly;
* IPv4 uses dot-separated decimal with leading 0's (010.123.045.006)
* - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order
* - 'I6c' for IPv6 addresses printed as specified by
- * http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00
+ * http://tools.ietf.org/html/rfc5952
* - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form
* "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
* Options for %pU are:
@@ -1147,8 +1149,7 @@ qualifier:
* %pi4 print an IPv4 address with leading zeros
* %pI6 print an IPv6 address with colons
* %pi6 print an IPv6 address without colons
- * %pI6c print an IPv6 address as specified by
- * http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00
+ * %pI6c print an IPv6 address as specified by RFC 5952
* %pU[bBlL] print a UUID/GUID in big or little endian using lower or upper
* case.
* %n is ignored
diff --git a/lib/xz/xz_private.h b/lib/xz/xz_private.h
index a65633e06962..482b90f363fe 100644
--- a/lib/xz/xz_private.h
+++ b/lib/xz/xz_private.h
@@ -12,7 +12,7 @@
#ifdef __KERNEL__
# include <linux/xz.h>
-# include <asm/byteorder.h>
+# include <linux/kernel.h>
# include <asm/unaligned.h>
/* XZ_PREBOOT may be defined only via decompress_unxz.c. */
# ifndef XZ_PREBOOT
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