Bruno Randolf af55688435 lib: Improve EWMA efficiency by using bitshifts ...

Using bitshifts instead of division and multiplication should improve
performance. That requires weight and factor to be powers of two, but i think
this is something we can live with.

Thanks to Peter Zijlstra for the improved formula!

Signed-off-by: Bruno Randolf <br1@einfach.org>

--

v2:	use log2.h functions
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

..

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

lib: Remove unnecessary inclusions of asm/semaphore.h

2008-04-18 22:17:17 -04:00

zlib_deflate

trivial: fix typo "to to" in multiple files

2009-09-21 15:14:55 +02:00

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

ARM: 6213/1: atomic64_test: add ARM as supported architecture

2010-07-27 10:43:46 +01:00

atomic64.c

lib: Fix atomic64_add_unless return value convention

2010-03-01 11:38:46 -08:00

audit.c

…

average.c

lib: Improve EWMA efficiency by using bitshifts

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

bcd.c

rtc: BCD codeshrink

2008-07-24 10:47:33 -07:00

bitmap.c

lib/bitmap.c: use hex_to_bin()

2010-10-26 16:52:18 -07:00

bitrev.c

lib: export bitrev16

2008-06-06 11:29:10 -07:00

btree.c

lib/btree: fix possible NULL pointer dereference

2010-05-15 12:48:10 -07:00

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: fix one more thinko

2009-11-03 16:06:53 +01:00

cmdline.c

generic, memparse(): constify argument

2008-07-28 15:05:23 +02:00

cpu-notifier-error-inject.c

fault-injection: add CPU notifier error injection module

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

cpumask.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

crc7.c

…

crc16.c

…

crc32.c

revert "crc32: use __BYTE_ORDER macro for endian detection"

2010-05-26 08:19:23 -07:00

crc32defs.h

…

crc-ccitt.c

…

crc-itu-t.c

…

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

ctype: constify read-only _ctype string

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

debug_locks.c

rcu: Introduce lockdep-based checking to RCU read-side primitives

2010-02-25 09:40:59 +01:00

debugobjects.c

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

2010-05-18 08:17:58 -07:00

dec_and_lock.c

atomic: only take lock when the counter drops to zero on UP as well

2009-06-16 19:47:47 -07:00

decompress_bunzip2.c

lib/decompress_bunzip2.c: fix checkstack warning

2010-08-11 08:59:23 -07:00

decompress_inflate.c

lzma/gzip: fix potential oops when input data is truncated

2009-09-24 07:21:05 -07:00

decompress_unlzma.c

lzma/gzip: fix potential oops when input data is truncated

2009-09-24 07:21:05 -07:00

decompress_unlzo.c

lib: fix the use of LZO to decompress initramfs images

2010-04-24 11:31:25 -07:00

decompress.c

Add LZO compression support for initramfs and old-style initrd

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

devres.c

lib/devres.c: fix comment typo

2010-07-11 22:16:32 +02:00

div64.c

div64_u64(): improve precision on 32bit platforms

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

dma-debug.c

llseek: automatically add .llseek fop

2010-10-15 15:53:27 +02:00

dump_stack.c

…

dynamic_debug.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

2010-10-22 19:36:42 -07:00

extable.c

module: trim exception table on init free.

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

fault-inject.c

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

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

flex_array.c

flex_array: add helpers to get and put to make pointers easy to use

2010-08-09 20:45:09 -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

genalloc: fix allocation from end of pool

2010-06-29 15:29:30 -07:00

halfmd4.c

…

hexdump.c

lib: introduce common method to convert hex digits

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

hweight.c

x86: Add optimized popcnt variants

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

idr.c

docbook: add idr/ida to kernel-api docbook

2010-10-26 17:40:56 -07:00

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

Use WARN() in lib/

2008-07-26 12:00:07 -07:00

iommu-helper.c

iommu: inline iommu_num_pages

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

ioremap.c

x86, ioremap: Fix incorrect physical address handling in PAE mode

2010-07-09 11:42:03 -07:00

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

lib: Add generic exponentially weighted moving average (EWMA) function

2010-11-18 14:21:52 -05:00

Kconfig.debug

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2010-10-27 19:04:36 -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

kernel_lock.c

bkl: Fixup core_lock fallout

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

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

kobject: Introduce kset_find_obj_hinted.

2010-10-22 10:16:44 -07:00

kref.c

kref: remove kref_set

2010-05-21 09:37:29 -07:00

lcm.c

block: Fix overrun in lcm() and move it to lib

2010-03-15 12:47:59 +01:00

libcrc32c.c

libcrc32c: Fix "crc32c undefined" compilation error

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

list_debug.c

list debugging: warn when deleting a deleted entry

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

list_sort.c

lib/list_sort: test: check element addresses

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

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

locking: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit]

2009-03-13 01:32:36 +01:00

lru_cache.c

The DRBD driver

2009-10-01 21:17:49 +02:00

Makefile

lib: Add generic exponentially weighted moving average (EWMA) function

2010-11-18 14:21:52 -05:00

nlattr.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6

2009-03-26 22:45:23 -07:00

parser.c

lib/parser: cleanup match_number()

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

percpu_counter.c

percpu_counter: use this_cpu_ptr() instead of per_cpu_ptr()

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

plist.c

plist: Make plist debugging raw_spinlock aware

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

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

Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu

2010-10-07 09:43:11 +02:00

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

rbtree: Undo augmented trees performance damage and regression

2010-07-05 14:43:50 +02:00

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: smaller wrappers around rwsem_down_failed_common

2010-08-09 20:45:11 -07:00

scatterlist.c

scatterlist: prevent invalid free when alloc fails

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

sha1.c

…

show_mem.c

mm: use the same log level for show_mem()

2010-03-06 11:26:27 -08:00

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

lib/string.c: simplify strnstr()

2010-03-06 11:26:35 -08:00

swiotlb.c

swiotlb: Use page alignment for early buffer allocation

2010-10-11 17:08:36 -04:00

syscall.c

task_current_syscall

2008-07-26 12:00:10 -07:00

textsearch.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

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

uuid.c

Unified UUID/GUID definition

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

vsprintf.c

lib: fix scnprintf() if @size is == 0

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