linux-kernel - Re: sched: softlockups in multi_cpu

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Date:	Fri, 06 Mar 2015 09:45:36 -0500
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Rafael David Tinoco <inaddy@...ntu.com>,
	Ingo Molnar <mingo@...nel.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...emonkey.org.uk>,
	Davidlohr Bueso <dave@...olabs.net>, jason.low2@...com,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: sched: softlockups in multi_cpu_stop

On 03/06/2015 09:34 AM, Rafael David Tinoco wrote:
> Are you sure about this ? I have a core dump locked on the same place
> (state machine for powering cpu down for the task swap) from a 3.13 (+
> upstream patches) and this commit wasn't backported yet.

bisect took me to that same commit twice, and I'm running a -next with that
commit reverted and not seeing those hangs anymore.

I also didn't see the hang up until a month or so ago (which matches with that
commit date), and definitely not back in 3.13.


Thanks,
Sasha
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