sched: improve sched_clock() performance

[h-e-n] / arch / x86 / include / asm / msr.h

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 46be2fa..c2a812e 100644 (file)
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -108,9 +108,7 @@ static __always_inline unsigned long long __native_read_tsc(void)
 {
        DECLARE_ARGS(val, low, high);
 
-       rdtsc_barrier();
        asm volatile("rdtsc" : EAX_EDX_RET(val, low, high));
-       rdtsc_barrier();
 
        return EAX_EDX_VAL(val, low, high);
 }