Re: [PATCH] timekeeping: drop irq-context clocksource polling

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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