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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-18 21:54:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-18 21:54:49 +0100 |
| commit | d110ec3a1e1f522e2e9dfceb9c36d6590c26d2d4 (patch) | |
| tree | 86b2f8f1d22b74b05239525c55bd42e3db6afc03 /arch/x86/kernel/tsc_sync.c | |
| parent | 343e9099c8152daff20e10d6269edec21da44fc0 (diff) | |
| parent | 55dac3a5553b13891f0ae4bbd11920619b5436d4 (diff) | |
Merge branch 'linus' into core/rcu
Diffstat (limited to 'arch/x86/kernel/tsc_sync.c')
| -rw-r--r-- | arch/x86/kernel/tsc_sync.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/tsc_sync.c b/arch/x86/kernel/tsc_sync.c index 9ffb01c31c40a..1c0dfbca87c18 100644 --- a/arch/x86/kernel/tsc_sync.c +++ b/arch/x86/kernel/tsc_sync.c @@ -46,7 +46,9 @@ static __cpuinit void check_tsc_warp(void) cycles_t start, now, prev, end; int i; + rdtsc_barrier(); start = get_cycles(); + rdtsc_barrier(); /* * The measurement runs for 20 msecs: */ @@ -61,7 +63,9 @@ static __cpuinit void check_tsc_warp(void) */ __raw_spin_lock(&sync_lock); prev = last_tsc; + rdtsc_barrier(); now = get_cycles(); + rdtsc_barrier(); last_tsc = now; __raw_spin_unlock(&sync_lock); |