Re: [Linux 2.6.29-rc2] BUG: using smp_processor_id() inpreemptible

From: Thomas Gleixner
Date: Sun Jan 25 2009 - 06:59:04 EST

On Sat, 24 Jan 2009, Andrew Morton wrote:
> Coming out of the hrtimer_hres_active() call, I assume.


> Is this new behaviour, or were 2.6.28 and earlier doing it?

This code is there since highres was merged, but something seems to
have changed in the suspend/resume code as I'm pretty sure, that this
code was always called with interrupts disabled.

> a) remove the wrong "Called with interrupts disabled via
> on_each_cpu()" comment from retrigger_next_event(), and replace it
> with something useful and truthful.

Good point.

> b) change hres_timers_resume() to do local_irq_save/restore

Right, but I'd like to know what changed below.


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