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Andi Kleen 0136611c62 [PATCH] optimize hweight64 for x86_64 
Based on patch from David Rientjes <rientjes@google.com>, but
changed by AK.

Optimizes the 64-bit hamming weight for x86_64 processors assuming they
have fast multiplication.  Uses five fewer bitops than the generic
hweight64.  Benchmark on one EMT64 showed ~25% speedup with 2^24
consecutive calls.

Define a new ARCH_HAS_FAST_MULTIPLIER that can be set by other
architectures that can also multiply fast.

Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:38 +02:00
..
reed_solomon [PATCH] reed-solomon: fix kernel-doc comments 2006-06-25 10:01:23 -07:00
zlib_deflate [PATCH] zlib_inflate: Upgrade library code to a recent version 2006-06-22 15:05:58 -07:00
zlib_inflate [PATCH] Fix ppc32 zImage inflate 2006-07-31 13:28:37 -07:00
.gitignore
audit.c [PATCH] fix missing ifdefs in syscall classes hookup for generic targets 2006-09-22 17:48:56 -07:00
bitmap.c [PATCH] kernel-doc for lib/bitmap.c 2006-06-25 10:01:20 -07:00
bust_spinlocks.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
cmdline.c
cpumask.c [PATCH] cpumask: uninline any_online_cpu() 2006-03-25 08:23:00 -08:00
crc-ccitt.c [PATCH] kernel-doc for lib/crc*.c 2006-06-25 10:01:20 -07:00
crc16.c [PATCH] kernel-doc for lib/crc*.c 2006-06-25 10:01:20 -07:00
crc32.c [PATCH] kernel-doc for lib/crc*.c 2006-06-25 10:01:20 -07:00
crc32defs.h
ctype.c
debug_locks.c [PATCH] lockdep: better lock debugging 2006-07-03 15:27:01 -07:00
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 Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
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] change gen_pool allocator to not touch managed memory 2006-06-23 07:42:49 -07:00
halfmd4.c
hweight.c [PATCH] optimize hweight64 for x86_64 2006-09-26 10:52:38 +02:00
idr.c [PATCH] Convert idr's internal locking to _irqsave variant 2006-07-14 21:53:54 -07:00
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] add __iowrite64_copy 2006-06-20 20:24:58 -07:00
Kconfig [PATCH] syscall class hookup for all normal targets 2006-09-12 03:04:40 -04:00
Kconfig.debug [PATCH] Don't force frame pointers for lockdep 2006-09-26 10:52:34 +02:00
kernel_lock.c [PATCH] lockdep: prove spinlock rwlock locking correctness 2006-07-03 15:27:04 -07:00
klist.c [PATCH] klist: Fix broken kref counting in find functions 2006-01-04 16:18:08 -08:00
kobject.c [PATCH] kobject: make people pay attention to kobject_add errors 2006-06-21 12:40:47 -07:00
kobject_uevent.c PCI: docking station: remove dock uevents 2006-08-03 13:20:06 -07:00
kref.c [PATCH] kref: avoid an atomic operation in kref_put() 2006-03-20 13:42:57 -08:00
libcrc32c.c [PATCH] constify libcrc32c table 2006-06-25 10:01:09 -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: allow read_lock() recursion of same class 2006-07-03 15:27:04 -07:00
Makefile [PATCH] syscall class hookup for all normal targets 2006-09-12 03:04:40 -04:00
parser.c
percpu_counter.c [PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter 2006-06-23 07:43:06 -07:00
plist.c [PATCH] pi-futex: add plist implementation 2006-06-27 17:32:46 -07:00
prio_tree.c
radix-tree.c [PATCH] radixtree: normalize radix_tree_tag_get() return value 2006-06-25 10:01:13 -07:00
rbtree.c [RBTREE] Switch rb_colour() et al to en_US spelling of 'color' for consistency 2006-06-05 20:19:05 +01:00
rwsem-spinlock.c [PATCH] lockdep: prove rwsem locking correctness 2006-07-03 15:27:04 -07:00
rwsem.c [PATCH] lockdep: prove rwsem locking correctness 2006-07-03 15:27:04 -07:00
semaphore-sleepers.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
sha1.c
smp_processor_id.c
sort.c
spinlock_debug.c [PATCH] disable debugging version of write_lock() 2006-08-06 08:57:46 -07:00
string.c [PATCH] strstrip() API 2006-06-23 07:43:06 -07:00
swiotlb.c BUG_ON() Conversion in lib/swiotlb.c 2006-03-24 18:47:11 +01:00
textsearch.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ts_bm.c [TEXTSEARCH]: Fix Boyer Moore initialization bug 2006-08-22 14:33:58 -07:00
ts_fsm.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ts_kmp.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
vsprintf.c Fix vsnprintf off-by-one bug 2006-06-28 17:09:34 -07:00