diff options
| author | Paul Mackerras <paulus@samba.org> | 2008-11-12 08:43:22 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-11-12 08:43:22 +1100 |
| commit | 486936cd93e99c802153b3f2f629c5ce62b8c0d4 (patch) | |
| tree | 51e261a96e1fb6b51d4a6afb92bfc2480e150b6c /arch/x86/include/asm/tsc.h | |
| parent | 1c1b777a5673b57a6c0377ba60a790d05e4a0676 (diff) | |
| parent | f21f237cf55494c3a4209de323281a3b0528da10 (diff) | |
Merge branch 'linux-2.6' into next
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); |