linux-kernel - Re: [PATCH 2/2] hrtimer: Prevent enqueue of hrtimer on dead CPU

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Message-ID: <alpine.LFD.2.02.1304181141170.21884@ionos>
Date:	Thu, 18 Apr 2013 11:44:03 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Michael Bohan <mbohan@...eaurora.org>
cc:	LKML <linux-kernel@...r.kernel.org>, linux-arm-msm@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH 2/2] hrtimer: Prevent enqueue of hrtimer on dead CPU

On Wed, 10 Apr 2013, Michael Bohan wrote:

> When switching the hrtimer cpu_base, we briefly allow for
> preemption to become enabled by unlocking the cpu_base lock.

No, interrupts still stay disabled and there is no way to preempt
here. Can you please explain, what you are trying to do and what makes
you think there is a problem in that code?

Thanks,

	tglx


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