Huang Ying a3127336b7 llist: Move cpu_relax() to after the cmpxchg() ...

If in llist_add()/etc. functions the first cmpxchg() call succeeds, it is
not necessary to use cpu_relax() before the cmpxchg(). So cpu_relax() in
a busy loop involving cmpxchg() should go after cmpxchg() instead of before
that.

This patch fixes this for all involved llist functions.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1315461646-1379-4-git-send-email-ying.huang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2011-10-04 12:43:39 +02:00

..

lzo

lib: add support for LZO-compressed kernels

2010-01-11 09:34:04 -08:00

raid6

Move .gitignore from drivers/md to lib/raid6

2010-08-30 17:35:52 +10:00

reed_solomon

…

xz

XZ: Fix incorrect XZ_BUF_ERROR

2011-09-21 13:39:59 -07:00

zlib_deflate

zlib: slim down zlib_deflate() workspace when possible

2011-03-22 17:44:17 -07:00

zlib_inflate

inflate_fast: sout is already a short so ptr arith was off by one.

2010-03-12 15:52:44 -08:00

.gitignore

…

argv_split.c

tree-wide: convert open calls to remove spaces to skip_spaces() lib function

2009-12-15 08:53:32 -08:00

atomic64_test.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

atomic64.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

audit.c

audit: support the "standard" <asm-generic/unistd.h>

2011-05-04 14:41:28 -04:00

average.c

lib: Improve EWMA efficiency by using bitshifts

2010-12-06 15:58:43 -05:00

bcd.c

…

bch.c

lib: add shared BCH ECC library

2011-03-11 14:25:50 +00:00

bitmap.c

Merge branch 'apei' into apei-release

2011-08-03 11:30:42 -04:00

bitrev.c

…

bsearch.c

lib: Add generic binary search function to the kernel.

2011-05-19 16:55:27 +09:30

btree.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

bug.c

modules: Fix module_bug_list list corruption race

2010-10-05 11:29:27 -07:00

bust_spinlocks.c

oops handling: ensure that any oops is flushed to the mtdoops console

2009-01-06 15:59:11 -08:00

check_signature.c

…

checksum.c

lib/checksum.c: optimize do_csum a bit

2011-07-07 04:52:24 -07:00

cmdline.c

…

cordic.c

lib: cordic: add library module providing cordic angle calculation

2011-06-03 15:01:07 -04:00

cpu_rmap.c

lib: cpu_rmap: CPU affinity reverse-mapping

2011-01-24 14:51:56 -08:00

cpu-notifier-error-inject.c

fault-injection: add CPU notifier error injection module

2010-05-27 09:12:48 -07:00

cpumask.c

cpumask: alloc_cpumask_var() use NUMA_NO_NODE

2011-07-26 16:49:44 -07:00

crc7.c

…

crc8.c

lib: crc8: add new library module providing crc8 algorithm

2011-06-03 15:01:06 -04:00

crc16.c

…

crc32.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

crc32defs.h

…

crc-ccitt.c

…

crc-itu-t.c

…

crc-t10dif.c

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ctype.c

ctype: constify read-only _ctype string

2009-12-15 08:53:32 -08:00

debug_locks.c

Revert "debug_locks: set oops_in_progress if we will log messages."

2010-11-29 15:18:28 -08:00

debugobjects.c

debugobjects: Fix boot crash when kmemleak and debugobjects enabled

2011-06-20 14:38:43 +02:00

dec_and_lock.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

decompress_bunzip2.c

Decompressors: include <linux/slab.h> in <linux/decompress/mm.h>

2011-01-13 08:03:23 -08:00

decompress_inflate.c

decompressors: check input size in decompress_inflate.c

2011-01-13 08:03:25 -08:00

decompress_unlzma.c

Decompressors: validate match distance in decompress_unlzma.c

2011-01-13 08:03:24 -08:00

decompress_unlzo.c

Decompressors: fix callback-to-callback mode in decompress_unlzo.c

2011-01-13 08:03:24 -08:00

decompress_unxz.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

decompress.c

decompressors: add boot-time XZ support

2011-01-13 08:03:25 -08:00

devres.c

devres: fix possible use after free

2011-07-25 20:57:14 -07:00

div64.c

div64_u64(): improve precision on 32bit platforms

2010-10-26 16:52:19 -07:00

dma-debug.c

dma-debug: print information about leaked entry

2011-04-07 16:31:19 +02:00

dump_stack.c

…

dynamic_debug.c

dynamic_debug: add #include <linux/sched.h>

2011-02-03 15:59:58 -08:00

extable.c

module: trim exception table on init free.

2009-06-12 21:47:04 +09:30

fault-inject.c

fault-injection: add ability to export fault_attr in arbitrary directory

2011-08-03 14:25:20 -10:00

find_last_bit.c

bitops: add #ifndef for each of find bitops

2011-05-26 17:12:38 -07:00

find_next_bit.c

arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT}

2011-05-26 17:12:38 -07:00

flex_array.c

flex_array: avoid divisions when accessing elements

2011-05-26 17:12:33 -07:00

gcd.c

lib: add lib/gcd.c

2009-06-18 13:04:05 -07:00

gen_crc32table.c

crc32: major optimization

2010-05-25 08:07:06 -07:00

genalloc.c

lib, Make gen_pool memory allocator lockless

2011-08-03 11:15:57 -04:00

halfmd4.c

…

hexdump.c

include/linux/printk.h lib/hexdump.c: neatening and add CONFIG_PRINTK guard

2011-01-13 08:03:10 -08:00

hweight.c

x86: Add optimized popcnt variants

2010-04-06 15:52:11 -07:00

idr.c

ida: simplified functions for id allocation

2011-08-03 14:25:20 -10:00

inflate.c

MN10300: Don't try and #include <linux/slab.h> in lib/inflate.c from bootloader

2010-08-12 09:51:35 -07:00

int_sqrt.c

…

iomap_copy.c

…

iomap.c

iomap: make IOPORT/PCI mapping functions conditional

2011-07-22 18:46:26 +02:00

iommu-helper.c

iommu: inline iommu_num_pages

2010-08-09 20:45:05 -07:00

ioremap.c

ACPI, APEI, Generic Hardware Error Source POLL/IRQ/NMI notification type support

2011-01-12 03:06:19 -05:00

irq_regs.c

…

is_single_threaded.c

kernel: is_current_single_threaded: don't use ->mmap_sem

2009-07-17 09:11:31 +10:00

kasprintf.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

Kconfig

llist: Make some llist functions inline

2011-10-04 11:30:53 +02:00

Kconfig.debug

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-07-22 16:45:02 -07:00

Kconfig.kgdb

mips,kgdb: kdb low level trap catch and stack trace

2010-05-20 21:04:26 -05:00

Kconfig.kmemcheck

kmemcheck: depend on HAVE_ARCH_KMEMCHECK

2009-07-01 22:28:44 +02:00

klist.c

driver core: Remove completion from struct klist_node

2009-01-06 10:44:30 -08:00

kobject_uevent.c

kobject_uevent: fix typo in comments

2010-08-23 18:12:46 -07:00

kobject.c

Delay struct net freeing while there's a sysfs instance refering to it

2011-06-12 17:45:41 -04:00

kref.c

kref: Add a kref_sub function

2010-11-22 13:25:13 +10:00

kstrtox.c

lib: make _tolower() public

2011-07-25 20:57:16 -07:00

lcm.c

lib/lcm.c: quiet sparse noise

2011-07-25 20:57:15 -07:00

libcrc32c.c

libcrc32c: Fix "crc32c undefined" compilation error

2008-12-25 11:01:42 +11:00

list_debug.c

Expand CONFIG_DEBUG_LIST to several other list operations

2011-02-18 11:32:28 -08:00

list_sort.c

lib/list_sort: test: check element addresses

2010-10-26 16:52:19 -07:00

llist.c

llist: Move cpu_relax() to after the cmpxchg()

2011-10-04 12:43:39 +02:00

locking-selftest-hardirq.h

…

locking-selftest-mutex.h

…

locking-selftest-rlock-hardirq.h

…

locking-selftest-rlock-softirq.h

…

locking-selftest-rlock.h

…

locking-selftest-rsem.h

…

locking-selftest-softirq.h

…

locking-selftest-spin-hardirq.h

…

locking-selftest-spin-softirq.h

…

locking-selftest-spin.h

…

locking-selftest-wlock-hardirq.h

…

locking-selftest-wlock-softirq.h

…

locking-selftest-wlock.h

…

locking-selftest-wsem.h

…

locking-selftest.c

rcu: Fix unpaired rcu_irq_enter() from locking selftests

2011-05-26 09:42:19 -07:00

lru_cache.c

lru_cache: use correct type in sizeof for allocation

2011-05-25 08:39:52 -07:00

Makefile

llist: Make some llist functions inline

2011-10-04 11:30:53 +02:00

md5.c

crypto: Move md5_transform to lib/md5.c

2011-08-06 18:32:45 -07:00

nlattr.c

net: fix nla_policy_len to actually _iterate_ over the policy

2011-02-28 12:38:25 -08:00

parser.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

percpu_counter.c

percpucounter: Optimize __percpu_counter_add a bit through the use of this_cpu() options.

2010-12-17 15:07:18 +01:00

plist.c

plist: Remove the need to supply locks to plist heads

2011-07-08 14:02:53 +02:00

prio_heap.c

lib: fix sparse shadowed variable warning

2009-01-06 15:59:11 -08:00

prio_tree.c

…

proportions.c

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-01-06 17:10:04 -08:00

radix-tree.c

tmpfs radix_tree: locate_item to speed up swapoff

2011-08-03 14:25:24 -10:00

random32.c

Merge branch 'master' into for-next

2010-06-16 18:08:13 +02:00

ratelimit.c

ratelimit: fix the return value when __ratelimit() fails to acquire the lock

2010-04-07 08:38:04 -07:00

rational.c

lib/rational.c needs module.h

2010-01-11 09:34:05 -08:00

rbtree.c

Export the augmented rbtree helper functions

2011-01-28 12:16:59 +10:00

reciprocal_div.c

…

rwsem-spinlock.c

rwsem generic spinlock: use IRQ save/restore spinlocks

2010-04-07 16:15:05 -07:00

rwsem.c

rwsem: Remove redundant asmregparm annotation

2011-01-27 12:30:40 +01:00

scatterlist.c

scatterlist: prevent invalid free when alloc fails

2010-08-30 19:55:09 +02:00

sha1.c

lib/sha1.c: quiet sparse noise about symbol not declared

2011-09-13 16:09:41 -07:00

show_mem.c

arch, mm: filter disallowed nodes from arch specific show_mem functions

2011-05-25 08:39:03 -07:00

smp_processor_id.c

cpumask: convert lib/smp_processor_id to new cpumask ops

2009-01-30 15:47:34 +01:00

sort.c

generic swap(): lib/sort.c: rename swap to swap_func

2009-01-08 08:31:14 -08:00

spinlock_debug.c

locking: Further name space cleanups

2009-12-14 23:55:33 +01:00

string_helpers.c

[SCSI] lib: string_get_size(): don't hang on zero; no decimals on exact

2008-10-23 11:42:20 -05:00

string.c

Add a strtobool function matching semantics of existing in kernel equivalents

2011-05-19 16:55:28 +09:30

swiotlb.c

swiotlb: Export swioltb_nr_tbl and utilize it as appropiate.

2011-06-06 15:41:16 -04:00

syscall.c

…

test-kstrtox.c

kstrtox: fix compile warnings in test

2011-04-14 16:06:54 -07:00

textsearch.c

textsearch: doc - fix spelling in lib/textsearch.c.

2011-01-24 23:33:30 -08:00

timerqueue.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

ts_bm.c

…

ts_fsm.c

…

ts_kmp.c

…

uuid.c

Unified UUID/GUID definition

2010-05-19 22:40:47 -04:00

vsprintf.c

Merge 'akpm' patch series

2011-07-25 21:00:19 -07:00