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From: Sasha Levin <sasha.levin@oracle.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: hpa@zytor.com, torvalds@linux-foundation.org, efault@gmx.de,
	tglx@linutronix.de, linux-kernel@vger.kernel.org,
	mingo@kernel.org, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:sched/core] sched: Change the sched_class::set_cpus_allowed( ) calling context
Date: Thu, 13 Aug 2015 16:59:01 -0400	[thread overview]
Message-ID: <55CD0515.3090404@oracle.com> (raw)
In-Reply-To: <20150813203732.GF16853@twins.programming.kicks-ass.net>

On 08/13/2015 04:37 PM, Peter Zijlstra wrote:
> On Thu, Aug 13, 2015 at 02:47:20PM -0400, Sasha Levin wrote:
>> > [79817.224383] bad: scheduling from the idle thread!
>> > [79817.224900] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.2.0-rc6-next-20150813-sasha-00040-g059fd6d #2431
>> > [79817.225709]  ffffffffae0c6320 ffff880051b77c00 ffffffffade7f739 ffff8800a69e15c0
>> > [79817.226419]  ffff880051b77c18 ffffffffa43c4ed3 ffff880051be8000 ffff880051b77c48
>> > [79817.227122]  ffffffffa43a7ffb ffff880051be8000 ffff8800a69e15c0 ffffffffae094d40
>> > [79817.227806] Call Trace:
>> > [79817.228039] dump_stack (lib/dump_stack.c:52)
>> > [79817.228503] dequeue_task_idle (kernel/sched/idle_task.c:45)
>> > [79817.229005] dequeue_task (kernel/sched/core.c:839)
>> > [79817.229485] do_set_cpus_allowed (kernel/sched/core.c:1178 (discriminator 9))
>> > [79817.230006] init_idle (kernel/sched/core.c:4937)
>> > [79817.230467] idle_thread_get (kernel/smpboot.c:35)
> Dhurr.. so oddly enough my actual hardware boots without issue.
> 
> But I can see how that could go wrong, does the below make your
> (virtual) machine happy again?

Seems to work fine now, thanks!


Thanks,
Sasha

  reply	other threads:[~2015-08-13 20:59 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-15 15:43 [RFC][PATCH 0/4] sched,numa: pinned task accounting Peter Zijlstra
2015-05-15 15:43 ` [RFC][PATCH 1/4] sched: Fix a race between __kthread_bind() and sched_setaffinity() Peter Zijlstra
2015-05-15 15:56   ` Tejun Heo
2015-08-07 14:27     ` Peter Zijlstra
2015-08-07 15:16       ` Tejun Heo
2015-08-07 15:29         ` Peter Zijlstra
2015-08-07 15:38           ` Tejun Heo
2015-08-07 15:59             ` Peter Zijlstra
2015-08-07 16:09               ` Tejun Heo
2015-08-12 12:38   ` [tip:sched/core] " tip-bot for Peter Zijlstra
2015-05-15 15:43 ` [RFC][PATCH 2/4] sched: Make sched_class::set_cpus_allowed() unconditional Peter Zijlstra
2015-08-12 12:38   ` [tip:sched/core] " tip-bot for Peter Zijlstra
2015-08-20 16:45   ` [RFC][PATCH 2/4] " Sasha Levin
2015-05-15 15:43 ` [RFC][PATCH 3/4] sched: Change sched_class::set_cpus_allowed calling context Peter Zijlstra
     [not found]   ` <OF66BF3765.2EBFD3B1-ON48257E49.0028DC79-48257E49.0029F058@zte.com.cn>
2015-05-18  8:32     ` Peter Zijlstra
2015-05-18  9:34       ` Juri Lelli
2015-05-18 20:04       ` Peter Zijlstra
2015-08-12 12:38   ` [tip:sched/core] sched: Change the sched_class::set_cpus_allowed( ) " tip-bot for Peter Zijlstra
2015-08-13 18:47     ` Sasha Levin
2015-08-13 20:37       ` Peter Zijlstra
2015-08-13 20:59         ` Sasha Levin [this message]
2015-08-13 21:30           ` Peter Zijlstra
2015-05-15 15:43 ` [RFC][PATCH 4/4] sched, numa: Ignore pinned tasks Peter Zijlstra
2015-05-15 19:05   ` Rik van Riel
2015-05-16  9:31   ` Peter Zijlstra
2015-05-18 13:00   ` Srikar Dronamraju
2015-05-18 13:06     ` Peter Zijlstra
2015-05-18 14:13       ` Rik van Riel
2015-05-18 14:29       ` Srikar Dronamraju
2015-05-18 15:09         ` Peter Zijlstra
2015-05-18 13:10   ` Srikar Dronamraju
2015-05-18  9:08 ` [RFC][PATCH 0/4] sched,numa: pinned task accounting Artem Bityutskiy

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