diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2007-10-17 20:04:37 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de> | 2007-10-17 22:16:12 +0400 |
| commit | 6619a8fb594486363783cc4a8372e4d4ee4b913e (patch) | |
| tree | 83130702b16dae3ccae5be54acd18993474ff757 /include | |
| parent | 9689ba8ad0dc27c0a2ce40eb4c0f8fb66551119c (diff) | |
| download | linux-6619a8fb594486363783cc4a8372e4d4ee4b913e.tar.xz | |
x86: Create clflush() inline, remove hardcoded wbinvd
Create an inline function for clflush(), with the proper arguments,
and use it instead of hard-coding the instruction.
This also removes one instance of hard-coded wbinvd, based on a patch
by Bauder de Oliveira Costa.
[ tglx: arch/x86 adaptation ]
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/system_32.h | 4 | ||||
| -rw-r--r-- | include/asm-x86/system_64.h | 5 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-x86/system_32.h b/include/asm-x86/system_32.h index 1d6fb3afa533..db6283eb5e46 100644 --- a/include/asm-x86/system_32.h +++ b/include/asm-x86/system_32.h @@ -161,6 +161,10 @@ static inline void native_wbinvd(void) asm volatile("wbinvd": : :"memory"); } +static inline void clflush(volatile void *__p) +{ + asm volatile("clflush %0" : "+m" (*(char __force *)__p)); +} #ifdef CONFIG_PARAVIRT #include <asm/paravirt.h> diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h index fb4bcf99e665..ec4c29bcfcb0 100644 --- a/include/asm-x86/system_64.h +++ b/include/asm-x86/system_64.h @@ -137,6 +137,11 @@ static inline void write_cr8(unsigned long val) #endif /* __KERNEL__ */ +static inline void clflush(volatile void *__p) +{ + asm volatile("clflush %0" : "+m" (*(char __force *)__p)); +} + #define nop() __asm__ __volatile__ ("nop") #ifdef CONFIG_SMP |