1
linux/lib
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
reed_solomon
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
audit.c
bcd.c
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
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
cmdline.c
cpumask.c cpumask: zero extra bits in alloc_cpumask_var_node 2009-01-01 10:12:30 +10:30
crc7.c
crc16.c
crc32.c
crc32defs.h
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
ctype.c
debug_locks.c
debugobjects.c debugobjects: add boot parameter default value 2008-11-26 10:07:06 +01:00
dec_and_lock.c
devres.c
div64.c
dump_stack.c
dynamic_printk.c driver core: add newlines to debugging enabled/disabled messages 2008-12-17 11:23:07 -08:00
extable.c
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
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c
hweight.c
idr.c lib/idr.c: Fix bug introduced by RCU fix 2008-12-10 13:34:33 -08:00
inflate.c
int_sqrt.c
iomap_copy.c
iomap.c
iommu-helper.c
ioremap.c
irq_regs.c
is_single_threaded.c CRED: Rename is_single_threaded() to is_wq_single_threaded() 2008-11-14 10:39:21 +11:00
kasprintf.c
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
kernel_lock.c
klist.c
kobject_uevent.c
kobject.c
kref.c
libcrc32c.c libcrc32c: Fix "crc32c undefined" compilation error 2008-12-25 11:01:42 +11:00
list_debug.c
lmb.c
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
Makefile bitmap: find_last_bit() 2009-01-01 10:12:19 +10:30
parser.c
percpu_counter.c percpu_counter: FBC_BATCH should be a variable 2009-01-06 15:59:13 -08:00
plist.c
prio_heap.c lib: fix sparse shadowed variable warning 2009-01-06 15:59:11 -08:00
prio_tree.c
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
ratelimit.c
rbtree.c
reciprocal_div.c
rwsem-spinlock.c
rwsem.c
scatterlist.c lib/scatterlist.c: fix kunmap() argument in sg_miter_stop() 2008-11-19 18:49:58 -08:00
sha1.c
show_mem.c
smp_processor_id.c
sort.c
spinlock_debug.c
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
swiotlb.c swiotlb: Don't include linux/swiotlb.h twice in lib/swiotlb.c 2009-01-04 12:25:16 +01:00
syscall.c
textsearch.c
ts_bm.c
ts_fsm.c
ts_kmp.c
vsprintf.c strict_strto* is not strict enough 2009-01-06 15:59:12 -08:00