Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as non-idletimer target

From: Peter Zijlstra
Date: Mon Dec 20 2010 - 10:48:23 EST


On Mon, 2010-12-20 at 16:24 +0100, Frederic Weisbecker wrote:
> Unbound timers are preferably targeted for non idle cpu. If
> possible though, prioritize idle cpus over nohz task cpus,
> because the main point of nohz task is to avoid unnecessary
> timer interrupts.

Oh is it?

I'd very much expect the cpu that arms the timer to get the interrupt. I
mean, if the task doesn't want to get interrupted by timers,
_DON'T_USE_TIMERS_ to begin with.

So no, don't much like this at all.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/