linux-kernel - Re: [patch] rt,sched,numa: Move task_numa_free() to __put_task

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Date:	Fri, 28 Feb 2014 12:32:09 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Galbraith <bitbucket@...ine.de>
Cc:	Mel Gorman <mgorman@...e.com>, LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>
Subject: Re: [patch] rt,sched,numa: Move task_numa_free() to
 __put_task_struct(), which -rt offloads

On Fri, Feb 28, 2014 at 07:23:11AM +0100, Mike Galbraith wrote:
> 
> Bad idea:
> [  908.026136]  [<ffffffff8150ad6a>] rt_spin_lock_slowlock+0xaa/0x2c0
> [  908.026145]  [<ffffffff8108f701>] task_numa_free+0x31/0x130
> [  908.026151]  [<ffffffff8108121e>] finish_task_switch+0xce/0x100
> [  908.026156]  [<ffffffff81509c0a>] thread_return+0x48/0x4ae
> [  908.026160]  [<ffffffff8150a095>] schedule+0x25/0xa0
> [  908.026163]  [<ffffffff8150ad95>] rt_spin_lock_slowlock+0xd5/0x2c0
> [  908.026170]  [<ffffffff810658cf>] get_signal_to_deliver+0xaf/0x680
> [  908.026175]  [<ffffffff8100242d>] do_signal+0x3d/0x5b0
> [  908.026179]  [<ffffffff81002a30>] do_notify_resume+0x90/0xe0
> [  908.026186]  [<ffffffff81513176>] int_signal+0x12/0x17
> [  908.026193]  [<00007ff2a388b1d0>] 0x7ff2a388b1cf
> 
> Signed-off-by: Mike Galbraith <bitbucket@...ine.de>

Fair enough; thanks!
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