diff options
| author | Dave Jones <davej@redhat.com> | 2014-03-10 19:32:22 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-11 10:16:18 -0700 |
| commit | 09df7c4c8097ca4a11393b1edd4997d786daad52 (patch) | |
| tree | 0a58d79b93d99af21711f093d6c0bd4f7d33d6ba /arch/x86/include/asm/spinlock.h | |
| parent | 8712a00514e50aafa7c9bf5cd3955fa60758e53b (diff) | |
| download | linux-09df7c4c8097ca4a11393b1edd4997d786daad52.tar.bz2 | |
x86: Remove CONFIG_X86_OOSTORE
This was an optimization that made memcpy type benchmarks a little
faster on ancient (Circa 1998) IDT Winchip CPUs. In real-life
workloads, it wasn't even noticable, and I doubt anyone is running
benchmarks on 16 year old silicon any more.
Given this code has likely seen very little use over the last decade,
let's just remove it.
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/include/asm/spinlock.h')
| -rw-r--r-- | arch/x86/include/asm/spinlock.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index bf156ded74b5..0f62f5482d91 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -26,10 +26,9 @@ # define LOCK_PTR_REG "D" #endif -#if defined(CONFIG_X86_32) && \ - (defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE)) +#if defined(CONFIG_X86_32) && (defined(CONFIG_X86_PPRO_FENCE)) /* - * On PPro SMP or if we are using OOSTORE, we use a locked operation to unlock + * On PPro SMP, we use a locked operation to unlock * (PPro errata 66, 92) */ # define UNLOCK_LOCK_PREFIX LOCK_PREFIX |