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authorAndi Kleen <ak@suse.de>2007-10-19 20:35:04 +0200
committerThomas Gleixner <tglx@linutronix.de>2007-10-19 20:35:04 +0200
commitab483570a13be2a34c0502b166df8f8b26802103 (patch)
tree6f9997b9313227b25faf28d67fe6e06d001022cc /include/asm-x86/processor_64.h
parenti386: do not BUG_ON() when MSR is unknown (diff)
downloadlinux-ab483570a13be2a34c0502b166df8f8b26802103.tar.xz
linux-ab483570a13be2a34c0502b166df8f8b26802103.zip
x86 & generic: change to __builtin_prefetch()
gcc 3.2+ supports __builtin_prefetch, so it's possible to use it on all architectures. Change the generic fallback in linux/prefetch.h to use it instead of noping it out. gcc should do the right thing when the architecture doesn't support prefetching Undefine the x86-64 inline assembler version and use the fallback. 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/asm-x86/processor_64.h')
-rw-r--r--include/asm-x86/processor_64.h6
1 files changed, 0 insertions, 6 deletions
diff --git a/include/asm-x86/processor_64.h b/include/asm-x86/processor_64.h
index f422becbddd9..398c39160fce 100644
--- a/include/asm-x86/processor_64.h
+++ b/include/asm-x86/processor_64.h
@@ -390,12 +390,6 @@ static inline void sync_core(void)
asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory");
}
-#define ARCH_HAS_PREFETCH
-static inline void prefetch(void *x)
-{
- asm volatile("prefetcht0 (%0)" :: "r" (x));
-}
-
#define ARCH_HAS_PREFETCHW 1
static inline void prefetchw(void *x)
{