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| author | Ingo Molnar <mingo@elte.hu> | 2008-11-23 08:55:47 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-23 08:55:47 +0100 |
| commit | ca9eed76133c00e7f4b1eeb4c1a6cb800cd2654c (patch) | |
| tree | 5f011f4bd00c921e41605b1915c227aeaf411a0d /arch/x86/include/asm/tsc.h | |
| parent | 8652cb4b0d87accbe78725fd2a13be2787059649 (diff) | |
| parent | 13d428afc007fcfcd6deeb215618f54cf9c0cae6 (diff) | |
Merge commit 'v2.6.28-rc6' into x86/debug
Diffstat (limited to 'arch/x86/include/asm/tsc.h')
| -rw-r--r-- | arch/x86/include/asm/tsc.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index 38ae163cc91b..9cd83a8e40d5 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -34,6 +34,8 @@ static inline cycles_t get_cycles(void) static __always_inline cycles_t vget_cycles(void) { + cycles_t cycles; + /* * We only do VDSOs on TSC capable CPUs, so this shouldnt * access boot_cpu_data (which is not VDSO-safe): @@ -42,7 +44,11 @@ static __always_inline cycles_t vget_cycles(void) if (!cpu_has_tsc) return 0; #endif - return (cycles_t)__native_read_tsc(); + rdtsc_barrier(); + cycles = (cycles_t)__native_read_tsc(); + rdtsc_barrier(); + + return cycles; } extern void tsc_init(void); |