Re: [RFC] clocksouce implementation for powerpc

From: Thomas Gleixner
Date: Wed Jun 20 2007 - 13:31:33 EST


On Wed, 2007-06-20 at 21:20 +0400, Sergei Shtylyov wrote:
> >>+void update_vsyscall(struct timespec *wall_time, struct clocksource *clock)
> >>+{
> >>+ timer_recalc_offset(tb_last_jiffy);
> >>+ timer_check_rtc();
> >>+}
>
> > Hmm .. This doesn't look like it's taking into account that the time has
> > changed ..
>
> Why? By the time it gets called (form the timer softirq context)

It is called from interrupt context at least in mainline. Only the -rt
patch moves this to the softirq.

tglx


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