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Eric Dumazet 179f7ebff6 percpu_counter: FBC_BATCH should be a variable 
For NR_CPUS >= 16 values, FBC_BATCH is 2*NR_CPUS

Considering more and more distros are using high NR_CPUS values, it makes
sense to use a more sensible value for FBC_BATCH, and get rid of NR_CPUS.

A sensible value is 2*num_online_cpus(), with a minimum value of 32 (This
minimum value helps branch prediction in __percpu_counter_add())

We already have a hotcpu notifier, so we can adjust FBC_BATCH dynamically.

We rename FBC_BATCH to percpu_counter_batch since its not a constant
anymore.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 15:59:13 -08:00
..
lzo
lzo: use get/put_unaligned_* helpers
2008-07-25 10:53:26 -07:00
reed_solomon
lib: Remove unnecessary inclusions of asm/semaphore.h
2008-04-18 22:17:17 -04:00
zlib_deflate
lib/: Spelling fixes
2008-02-03 17:48:52 +02:00
zlib_inflate
[ZLIB]: Fix external builds of zlib_inflate code.
2007-10-11 22:17:20 -07:00
.gitignore
Add some basic .gitignore files
2005-10-18 08:26:15 -07:00
argv_split.c
LIB: Replace inappropriate include of <linux/bug.h>
2007-10-20 00:26:10 +02:00
audit.c
[PATCH] audit signal recipients
2007-05-11 05:38:25 -04:00
bcd.c
rtc: BCD codeshrink
2008-07-24 10:47:33 -07:00
bitmap.c
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb
2008-10-23 08:20:34 -07:00
bitrev.c
lib: export bitrev16
2008-06-06 11:29:10 -07:00
bug.c
allow bug table entries to use relative pointers (and use it on x86-64)
2008-12-16 18:40:32 +01:00
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
uninline check_signature()
2007-07-16 09:05:50 -07:00
cmdline.c
generic, memparse(): constify argument
2008-07-28 15:05:23 +02:00
cpumask.c
cpumask: zero extra bits in alloc_cpumask_var_node
2009-01-01 10:12:30 +10:30
crc7.c
CRC7 support
2007-07-17 10:23:04 -07:00
crc16.c
[PATCH] kernel-doc for lib/crc*.c
2006-06-25 10:01:20 -07:00
crc32.c
lib/: Spelling fixes
2008-02-03 17:48:52 +02:00
crc32defs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
crc-ccitt.c
[PATCH] kernel-doc for lib/crc*.c
2006-06-25 10:01:20 -07:00
crc-itu-t.c
CRC ITU-T V.41
2007-05-10 18:24:13 +02:00
crc-t10dif.c
[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC
2008-07-12 08:22:32 -05:00
ctype.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
debug_locks.c
debug_locks: set oops_in_progress if we will log messages.
2008-08-01 10:46:43 +02:00
debugobjects.c
debugobjects: add boot parameter default value
2008-11-26 10:07:06 +01:00
dec_and_lock.c
[PATCH] atomic: dec_and_lock use atomic primitives
2006-01-08 20:13:48 -08:00
devres.c
[POWERPC] devres: Add devm_ioremap_prot()
2008-05-05 16:47:14 +10:00
div64.c
add an inlined version of iter_div_u64_rem
2008-06-12 10:47:58 +02:00
dump_stack.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dynamic_printk.c
driver core: add newlines to debugging enabled/disabled messages
2008-12-17 11:23:07 -08:00
extable.c
lib/extable.c: remove an expensive integer divide in search_extable()
2008-02-06 10:41:08 -08:00
fault-inject.c
Remove remaining unwinder code
2009-01-06 15:59:11 -08:00
find_last_bit.c
bitmap: find_last_bit()
2009-01-01 10:12:19 +10:30
find_next_bit.c
bitops: remove "optimizations"
2008-04-29 08:11:16 -07:00
gen_crc32table.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
genalloc.c
Slab allocators: Replace explicit zeroing with __GFP_ZERO
2007-07-17 10:23:02 -07:00
halfmd4.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hexdump.c
lib: create common ascii hex array
2008-05-14 19:11:14 -07:00
hweight.c
remove asm/bitops.h includes
2007-10-19 11:53:41 -07:00
idr.c
lib/idr.c: Fix bug introduced by RCU fix
2008-12-10 13:34:33 -08:00
inflate.c
inflate: refactor inflate malloc code
2008-07-25 10:53:28 -07:00
int_sqrt.c
[PATCH] lib: Fix bug in int_sqrt() for 64 bit longs
2006-02-03 08:32:08 -08:00
iomap_copy.c
[PATCH] add __iowrite64_copy
2006-06-20 20:24:58 -07:00
iomap.c
Use WARN() in lib/
2008-07-26 12:00:07 -07:00
iommu-helper.c
introduce generic iommu_num_pages function
2008-10-16 11:21:33 -07:00
ioremap.c
lib/ioremap.c should #include <linux/io.h>
2007-10-17 08:42:50 -07:00
irq_regs.c
[PATCH] irq_reqs: export __irq_regs
2006-10-06 08:53:40 -07:00
is_single_threaded.c
CRED: Rename is_single_threaded() to is_wq_single_threaded()
2008-11-14 10:39:21 +11:00
kasprintf.c
lib: move kasprintf to a separate file
2007-07-31 15:39:39 -07:00
Kconfig
Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-02 11:44:09 -08:00
Kconfig.debug
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
2008-12-30 17:28:09 -08:00
Kconfig.kgdb
kgdb: remove the requirement for CONFIG_FRAME_POINTER
2008-08-01 08:39:34 -05:00
kernel_lock.c
BKL: revert back to the old spinlock implementation
2008-05-10 20:58:02 -07:00
klist.c
klist: don't iterate over deleted entries
2008-10-09 08:56:04 +02:00
kobject_uevent.c
Use WARN() in lib/
2008-07-26 12:00:07 -07:00
kobject.c
kobject: Cleanup kobject_rename and !CONFIG_SYSFS
2008-10-16 09:24:52 -07:00
kref.c
kref: add kref_set()
2008-01-24 20:40:05 -08:00
libcrc32c.c
libcrc32c: Fix "crc32c undefined" compilation error
2008-12-25 11:01:42 +11:00
list_debug.c
list debugging: use WARN() instead of BUG()
2008-07-25 10:53:29 -07:00
lmb.c
lmb: Fix reserved region handling in lmb_enforce_memory_limit().
2008-08-15 19:57:57 -07:00
locking-selftest-hardirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-mutex.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-rlock-hardirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-rlock-softirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-rlock.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-rsem.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-softirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-spin-hardirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-spin-softirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-spin.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-wlock-hardirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-wlock-softirq.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-wlock.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest-wsem.h
[PATCH] lockdep: locking API self tests
2006-07-03 15:27:03 -07:00
locking-selftest.c
[PATCH] lockdep: show more details about self-test failures
2006-12-07 08:39:43 -08:00
Makefile
bitmap: find_last_bit()
2009-01-01 10:12:19 +10:30
parser.c
vfs: Use const for kernel parser table
2008-10-13 10:10:37 -07:00
percpu_counter.c
percpu_counter: FBC_BATCH should be a variable
2009-01-06 15:59:13 -08:00
plist.c
Use WARN() in lib/
2008-07-26 12:00:07 -07:00
prio_heap.c
lib: fix sparse shadowed variable warning
2009-01-06 15:59:11 -08:00
prio_tree.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
proportions.c
lib: proportions.c trivial sparse lock annotation
2009-01-06 15:59:11 -08:00
radix-tree.c
lib: radix_tree.c make percpu variable static
2009-01-06 15:59:11 -08:00
random32.c
random32: seeding improvement
2008-07-30 16:29:19 -07:00
ratelimit.c
__ratelimit() cpu flags can't be static
2008-07-28 16:30:20 -07:00
rbtree.c
[PATCH] rbtree: fixed reversed RB_EMPTY_NODE and rb_next/prev
2006-09-30 20:26:56 +02:00
reciprocal_div.c
[PATCH] SLAB: use a multiply instead of a divide in obj_to_index()
2006-12-13 09:05:49 -08:00
rwsem-spinlock.c
lib: remove fastcall from lib/*
2008-02-08 09:22:31 -08:00
rwsem.c
x86: fix UML and -regparm=3
2008-01-30 13:33:00 +01:00
scatterlist.c
lib/scatterlist.c: fix kunmap() argument in sg_miter_stop()
2008-11-19 18:49:58 -08:00
sha1.c
[PATCH] Numerous fixes to kernel-doc info in source files.
2007-02-11 10:51:32 -08:00
show_mem.c
lib: generic show_mem()
2008-07-26 12:00:10 -07:00
smp_processor_id.c
cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu
2008-07-26 16:40:33 +02:00
sort.c
lib/sort.c optimization
2007-10-17 08:42:52 -07:00
spinlock_debug.c
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
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 new sysfs_streq() string comparison function
2008-05-01 08:03:59 -07:00
swiotlb.c
swiotlb: Don't include linux/swiotlb.h twice in lib/swiotlb.c
2009-01-04 12:25:16 +01:00
syscall.c
task_current_syscall
2008-07-26 12:00:10 -07:00
textsearch.c
remove CONFIG_KMOD from lib
2008-07-22 19:24:31 +10:00
ts_bm.c
textsearch: ts_bm: support case insensitive searching in Boyer-Moore algorithm
2008-07-08 02:37:54 -07:00
ts_fsm.c
textsearch: ts_fsm: return error on request for case insensitive search
2008-07-08 02:38:27 -07:00
ts_kmp.c
textsearch: ts_kmp: support case insensitive searching in Knuth-Morris-Pratt algorithm
2008-07-08 02:38:09 -07:00
vsprintf.c
strict_strto* is not strict enough
2009-01-06 15:59:12 -08:00