Commit 52a8968c authored Aug 25, 2008 by Peter Zijlstra Committed by Ingo Molnar Aug 25, 2008

x86: fix cpufreq + sched_clock() regression



I noticed that my sched_clock() was slow on a number of machine, so I
started looking at cpufreq.

The below seems to fix the problem for me.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent f58899bb

arch/x86/kernel/tsc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}