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Tim Chen cca57c5b5a [PATCH] Kconfig.debug: Set DEBUG_MUTEX to off by default 
DEBUG_MUTEX flag is on by default in current kernel configuration.

During performance testing, we saw mutex debug functions like
mutex_debug_check_no_locks_freed (called by kfree()) is expensive as it
goes through a global list of memory areas with mutex lock and do the
checking.  For benchmarks such as Volanomark and Hackbench, we have seen
more than 40% drop in performance on some platforms.  We suggest to set
DEBUG_MUTEX off by default.  Or at least do that later when we feel that
the mutex changes in the current code have stabilized.

Signed-off-by: Tim Chen <tim.c.chen@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-19 09:13:51 -07:00
..
reed_solomon [PATCH] sem2mutex: kernel/ 2006-03-23 07:38:10 -08:00
zlib_deflate [PATCH] lib/zlib*: cleanups 2006-01-10 08:01:57 -08:00
zlib_inflate [PATCH] lib/zlib*: cleanups 2006-01-10 08:01:57 -08:00
.gitignore Add some basic .gitignore files 2005-10-18 08:26:15 -07:00
bitmap.c [PATCH] bitops: hweight() related cleanup 2006-03-26 08:57:15 -08:00
bust_spinlocks.c
cmdline.c
cpumask.c [PATCH] cpumask: uninline any_online_cpu() 2006-03-25 08:23:00 -08:00
crc-ccitt.c
crc16.c [PATCH] lib/crc16: added crc16 algorithm. 2005-09-08 14:41:27 -07:00
crc32.c
crc32defs.h
ctype.c
dec_and_lock.c [PATCH] atomic: dec_and_lock use atomic primitives 2006-01-08 20:13:48 -08:00
div64.c
dump_stack.c
errno.c
extable.c [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
find_next_bit.c [PATCH] bitops: generic ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() 2006-03-26 08:57:11 -08:00
gen_crc32table.c
genalloc.c [PATCH] fix broken lib/genalloc.c 2005-11-28 14:42:23 -08:00
halfmd4.c
hweight.c [PATCH] bitops: hweight() speedup 2006-03-26 08:59:30 -08:00
idr.c [PATCH] Whitespace and CodingStyle cleanup for lib/idr.c 2005-10-30 17:37:19 -08:00
inflate.c
int_sqrt.c [PATCH] lib: Fix bug in int_sqrt() for 64 bit longs 2006-02-03 08:32:08 -08:00
iomap.c
iomap_copy.c [PATCH] iomap_copy fallout (m68k) 2006-02-18 16:30:40 -05:00
Kconfig [PATCH] lib/crc16: added crc16 algorithm. 2005-09-08 14:41:27 -07:00
Kconfig.debug [PATCH] Kconfig.debug: Set DEBUG_MUTEX to off by default 2006-04-19 09:13:51 -07:00
kernel_lock.c [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
klist.c [PATCH] klist: Fix broken kref counting in find functions 2006-01-04 16:18:08 -08:00
kobject.c [PATCH] sysfs: Allow sysfs attribute files to be pollable 2006-04-14 11:41:24 -07:00
kobject_uevent.c [PATCH] kobject: fix build error if CONFIG_SYSFS=n 2006-03-20 13:42:57 -08:00
kref.c [PATCH] kref: avoid an atomic operation in kref_put() 2006-03-20 13:42:57 -08:00
libcrc32c.c
Makefile [PATCH] bitops: generic hweight{64,32,16,8}() 2006-03-26 08:57:11 -08:00
parser.c
prio_tree.c
radix-tree.c [PATCH] radix-tree documentation cleanups 2006-03-25 08:22:59 -08:00
rbtree.c
rwsem-spinlock.c
rwsem.c
semaphore-sleepers.c
sha1.c
smp_processor_id.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
sort.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
spinlock_debug.c [PATCH] Fix spinlock debugging delays to not time out too early 2006-02-07 16:12:33 -08:00
string.c [PATCH] Silence a const vs non-const warning 2006-04-11 06:18:42 -07:00
swiotlb.c BUG_ON() Conversion in lib/swiotlb.c 2006-03-24 18:47:11 +01:00
textsearch.c [PATCH] gfp_t: lib/* 2005-10-28 08:16:47 -07:00
ts_bm.c [TEXTSEARCH]: Fix broken good shift array calculation in Boyer-Moore 2006-02-02 17:15:41 -08:00
ts_fsm.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
ts_kmp.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
vsprintf.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00