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| author | Dave Jones <davej@redhat.com> | 2014-03-11 00:32:22 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-11 18:16:18 +0100 |
| commit | 09df7c4c8097ca4a11393b1edd4997d786daad52 (patch) | |
| tree | 0a58d79b93d99af21711f093d6c0bd4f7d33d6ba /arch/x86/um | |
| parent | Merge branch 'akpm' (patches from Andrew Morton) (diff) | |
| download | linux-09df7c4c8097ca4a11393b1edd4997d786daad52.tar.xz linux-09df7c4c8097ca4a11393b1edd4997d786daad52.zip | |
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/um')
| -rw-r--r-- | arch/x86/um/asm/barrier.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/um/asm/barrier.h b/arch/x86/um/asm/barrier.h index 7d01b8c56c00..cc04e67bfd05 100644 --- a/arch/x86/um/asm/barrier.h +++ b/arch/x86/um/asm/barrier.h @@ -40,11 +40,7 @@ #define smp_rmb() barrier() #endif /* CONFIG_X86_PPRO_FENCE */ -#ifdef CONFIG_X86_OOSTORE -#define smp_wmb() wmb() -#else /* CONFIG_X86_OOSTORE */ #define smp_wmb() barrier() -#endif /* CONFIG_X86_OOSTORE */ #define smp_read_barrier_depends() read_barrier_depends() #define set_mb(var, value) do { (void)xchg(&var, value); } while (0) |