redonkable/alistair23-linux
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alistair23-linux/arch/x86/lib
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Ma Ling 3b4b682bec x86, mem: Optimize memmove for small size and unaligned cases 
movs instruction will combine data to accelerate moving data,
however we need to concern two cases about it.

1. movs instruction need long lantency to startup,
   so here we use general mov instruction to copy data.
2. movs instruction is not good for unaligned case,
   even if src offset is 0x10, dest offset is 0x0,
   we avoid and handle the case by general mov instruction.

Signed-off-by: Ma Ling <ling.ma@intel.com>
LKML-Reference: <1284664360-6138-1-git-send-email-ling.ma@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-09-24 18:57:11 -07:00
..
.gitignore x86: Gitignore: arch/x86/lib/inat-tables.c 2009-11-04 13:11:28 +01:00
atomic64_32.c x86-32: Rewrite 32-bit atomic64 functions in assembly 2010-02-25 20:47:30 -08:00
atomic64_386_32.S x86, asm: Use a lower case name for the end macro in atomic64_386_32.S 2010-08-12 07:04:16 -07:00
atomic64_cx8_32.S x86-32: Fix atomic64_inc_not_zero return value convention 2010-03-01 11:39:03 -08:00
cache-smp.c x86, lib: Add wbinvd smp helpers 2010-01-22 16:05:42 -08:00
checksum_32.S
clear_page_64.S x86, alternatives: Use 16-bit numbers for cpufeature index 2010-07-07 10:36:28 -07:00
cmpxchg.c x86, asm: Merge cmpxchg_486_u64() and cmpxchg8b_emu() 2010-07-28 17:05:11 -07:00
cmpxchg8b_emu.S
copy_page_64.S x86, alternatives: Use 16-bit numbers for cpufeature index 2010-07-07 10:36:28 -07:00
copy_user_64.S x86, alternatives: Fix one more open-coded 8-bit alternative number 2010-07-13 14:56:16 -07:00
copy_user_nocache_64.S
csum-copy_64.S
csum-partial_64.c
csum-wrappers_64.c
delay.c
getuser.S
inat.c x86: AVX instruction set decoder support 2009-10-29 08:47:46 +01:00
insn.c x86: AVX instruction set decoder support 2009-10-29 08:47:46 +01:00
iomap_copy_64.S
Makefile x86, asm: Move cmpxchg emulation code to arch/x86/lib 2010-07-28 16:53:49 -07:00
memcpy_32.c x86, mem: Optimize memmove for small size and unaligned cases 2010-09-24 18:57:11 -07:00
memcpy_64.S x86, mem: Optimize memcpy by avoiding memory false dependece 2010-08-23 14:56:41 -07:00
memmove_64.c x86, mem: Optimize memmove for small size and unaligned cases 2010-09-24 18:57:11 -07:00
memset_64.S x86, alternatives: Use 16-bit numbers for cpufeature index 2010-07-07 10:36:28 -07:00
mmx_32.c
msr-reg-export.c
msr-reg.S
msr-smp.c x86, msr: msrs_alloc/free for CONFIG_SMP=n 2009-12-16 15:36:32 -08:00
msr.c x86, msr: msrs_alloc/free for CONFIG_SMP=n 2009-12-16 15:36:32 -08:00
putuser.S
rwlock_64.S
rwsem_64.S Fix the x86_64 implementation of call_rwsem_wait() 2010-05-04 15:24:14 -07:00
semaphore_32.S
string_32.c
strstr_32.c
thunk_32.S
thunk_64.S
usercopy_32.c x86: Turn the copy_from_user check into an (optional) compile time warning 2009-10-01 11:31:04 +02:00
usercopy_64.c
x86-opcode-map.txt x86: Add Intel FMA instructions to x86 opcode map 2009-10-29 08:47:47 +01:00