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| author | David Vrabel <david.vrabel@csr.com> | 2008-11-25 13:52:56 +0000 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2008-11-25 13:52:56 +0000 |
| commit | 65d76f368295973a35d195c9b13053502a67b6bc (patch) | |
| tree | fa7d9204b2da01a9c53633dda789380cfcad38c6 /arch/x86/kernel/tsc_sync.c | |
| parent | dba0a918722ee0f0ba3442575e4448c3ab622be4 (diff) | |
| parent | ed313489badef16d700f5a3be50e8fd8f8294bc8 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream
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 9ffb01c31c40..1c0dfbca87c1 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); |