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SubjectRe: [PATCH -rt] perf: make swevent hrtimer run in irq instead of softirq
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On Thu, 2012-07-05 at 16:21 +0800, Yong Zhang wrote:
> diff --git a/kernel/events/core.c b/kernel/events/core.c
> index fd126f8..451d452 100644
> --- a/kernel/events/core.c
> +++ b/kernel/events/core.c
> @@ -5403,6 +5403,7 @@ static void perf_swevent_init_hrtimer(struct perf_event *event)
>
> hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
> hwc->hrtimer.function = perf_swevent_hrtimer;
> + hwc->hrtimer.irqsafe = 1;
>
> /*
> * Since hrtimers have a fixed rate, we can do a static freq->period

Yes this is correct.. curious we lost that. I'm sure I've done this
before.


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