linux-kernel - Re: [PATCH] kthread: Prevent unpark race which puts threads on the wrong cpu

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Message-ID: <5165C087.4060404@sr71.net>
Date:	Wed, 10 Apr 2013 12:41:59 -0700
From:	Dave Hansen <dave@...1.net>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Borislav Petkov <bp@...en8.de>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, dhillf@...il.com,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] kthread: Prevent unpark race which puts threads on the
 wrong cpu

I think I got a full trace this time:

	http://sr71.net/~dave/linux/bigbox-trace.1365621899.txt.gz

The last timestamp is pretty close to the timestamp on the console:

[ 2071.033434] smpboot_thread_fn():
[ 2071.033455] smpboot_thread_fn() cpu: 22 159
[ 2071.033470] td->cpu: 22
[ 2071.033475] smp_processor_id(): 21
[ 2071.033486] comm: migration/%u


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