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| author | Steve French <sfrench@us.ibm.com> | 2008-08-26 16:56:05 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2008-08-26 16:56:05 +0000 |
| commit | 3dae49abef945c55c10fa7c479cfd8fd13af55db (patch) | |
| tree | 487c47c6d23cc28a259b913396aeaff0b792d32d /arch/x86/kernel/tsc.c | |
| parent | 6ce5eecb9cd3ac97b952c50309b87c31488a45e9 (diff) | |
| parent | b8e6c91c74e9f0279b7c51048779b3d62da60b88 (diff) | |
Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86/kernel/tsc.c')
| -rw-r--r-- | arch/x86/kernel/tsc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 46af71676738..8e786b0d665a 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -314,7 +314,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, mark_tsc_unstable("cpufreq changes"); } - set_cyc2ns_scale(tsc_khz_ref, freq->cpu); + set_cyc2ns_scale(tsc_khz, freq->cpu); return 0; } @@ -325,6 +325,10 @@ static struct notifier_block time_cpufreq_notifier_block = { static int __init cpufreq_tsc(void) { + if (!cpu_has_tsc) + return 0; + if (boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) + return 0; cpufreq_register_notifier(&time_cpufreq_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); return 0; |