Re: [PATCH -rt] perf: make swevent hrtimer run in irq instead of softirq
From: Peter Zijlstra <hidden>
Date: 2012-07-05 08:29:15
Also in:
lkml
From: Peter Zijlstra <hidden>
Date: 2012-07-05 08:29:15
Also in:
lkml
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.