Re: [patch] rt: sysprof hrtimer fix

[Ingo Molnar]

* Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote:

> So, just a thing.
> -rt make the hrtimer's timers running on softirq context because the hrtimer_interrupt
> doesn't run as a threaded interrupt, and then it is not preemptible right?
> 
> In that case, sysprof will continue to run in hardirq context, as before, and
> it will considerably increase the latency. And that matters here.
> So I think it is important to put it on the reminder:

hm, not sure. Do you know it numerically how much worst-case overhead it
induces?

	Ingo
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