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| author | Brian Gerst <brgerst@gmail.com> | 2010-02-05 09:37:08 -0500 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-02-05 13:57:38 -0800 |
| commit | 910bf6ad0be3e1efbda0e9d358794937b52c9860 (patch) | |
| tree | e488696b553210cf1655da2d5c8c7087fd6bd519 /arch/x86/include/asm/io_64.h | |
| parent | 6175ddf06b6172046a329e3abfd9c901a43efd2e (diff) | |
| download | blackbird-op-linux-910bf6ad0be3e1efbda0e9d358794937b52c9860.tar.gz blackbird-op-linux-910bf6ad0be3e1efbda0e9d358794937b52c9860.zip | |
x86: Simplify flush_write_buffers()
Always make it an inline instead of using a macro for the no-op case.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1265380629-3212-7-git-send-email-brgerst@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/io_64.h')
| -rw-r--r-- | arch/x86/include/asm/io_64.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/include/asm/io_64.h b/arch/x86/include/asm/io_64.h index 1305525813fc..6964a1c366d3 100644 --- a/arch/x86/include/asm/io_64.h +++ b/arch/x86/include/asm/io_64.h @@ -83,7 +83,13 @@ memcpy_toio(volatile void __iomem *dst, const void *src, size_t count) * 1. Out of order aware processors * 2. Accidentally out of order processors (PPro errata #51) */ -#define flush_write_buffers() do { } while (0) + +static inline void flush_write_buffers(void) +{ +#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE) + asm volatile("lock; addl $0,0(%%esp)": : :"memory"); +#endif +} #endif /* __KERNEL__ */ |
