On Sat, 2007-04-07 at 10:43 -0700, Daniel Walker wrote:
> Looks like this path ,
>
> arch/i386/kernel/tsc.c: time_cpufreq_notifier(); <-- takes xtime_lock
> mark_tsc_unstable();
> clocksource_change_rating(&clocksource_tsc, 0);
> timekeeping_change_clocksource(); <-- takes xtime_lock
>
>
> I'm not sure why the time_cpufreq_notifier is taking the xtime_lock tho .
Simply because it fiddles with variables which are relevant for
timekeeping.
tglx
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