linux-kernel - Re: [tip:timers/urgent] tick: Don't invoke tick_nohz_stop_sched

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Message-ID: <20130516141505.GF31373@pd.tnic>
Date:	Thu, 16 May 2013 16:15:05 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Frederic Weisbecker <fweisbec@...il.com>, mingo@...nel.org,
	hpa@...or.com, linux-kernel@...r.kernel.org, jkosina@...e.cz,
	tony.luck@...el.com, prarit@...hat.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:timers/urgent] tick: Don't invoke
 tick_nohz_stop_sched_tick( ) if the cpu is offline

On Thu, May 16, 2013 at 04:06:58PM +0200, Thomas Gleixner wrote:
> No, it's not about restarting the tick. It's about not falling into
> the nohz functions when the cpu is about to die. Just leave it alone,
> that's what the patch does.

Yep, this is how I saw it too: why even fiddle when the tick when we're
going offline anyway. We can look at the tick when we come back online
and enter idle.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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