From: "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <levinsasha928@gmail.com>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"linux-kernel@vger.kernel.org List"
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/4] sched: WARN when migrating to an offline CPU
Date: Tue, 10 Oct 2017 01:18:34 +0000 [thread overview]
Message-ID: <20171010011832.sbfbhqss5can5lga@sasha-lappy> (raw)
In-Reply-To: <20171009080445.33dif4wraymljmr2@hirez.programming.kicks-ass.net>
On Mon, Oct 09, 2017 at 10:04:45AM +0200, Peter Zijlstra wrote:
>On Sat, Oct 07, 2017 at 05:43:32PM +0000, Levin, Alexander (Sasha Levin) wrote:
>> On Sat, Oct 07, 2017 at 11:15:17AM +0200, Peter Zijlstra wrote:
>> >On Sat, Oct 07, 2017 at 02:07:26AM +0000, Levin, Alexander (Sasha Levin) wrote:
>> >> And quite a few lines of your added trace (lmk if you need more, or all):
>> >
>> >Yeah, could you please upload all of it somewhere? That chunk didn't
>> >include any hotplug bits at all.
>>
>> Attached. It's the stack trace followed by everything else.
>
>Much thanks, clue:
>
>[ 2073.495414] NOHZ: local_softirq_pending 202 -- (TIMER_SOFTIRQ | RCU_SOFTIRQ)
>
>cpuhp/2-22 [002] .... 104.797971: sched_cpu_deactivate: not-active: 2 mask: 0-1,3-4,6-7,9
>
>cpuhp/2-22 [002] .... 104.825166: sched_cpu_deactivate: rcu-sync: 2
>
>migration/2-24 [002] ..s1 104.855994: rebalance_domains: rcu-read-lock: 2
>migration/2-24 [002] ..s1 104.856000: load_balance: dst_cpu: 2 cpus: 6
>
>
>supposed fix; could you please verify?
Patch works, thanks!
--
Thanks,
Sasha
next prev parent reply other threads:[~2017-10-10 1:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-07 15:03 [PATCH 0/4] sched: Fix some load-balancer vs hotplug holes Peter Zijlstra
2017-09-07 15:03 ` [PATCH 1/4] sched/fair: Avoid newidle balance for !active CPUs Peter Zijlstra
2017-09-12 18:04 ` [tip:sched/urgent] " tip-bot for Peter Zijlstra
2017-09-07 15:03 ` [PATCH 2/4] sched/fair: Plug hole between hotplug and active load_balance Peter Zijlstra
2017-09-12 18:05 ` [tip:sched/urgent] sched/fair: Plug hole between hotplug and active_load_balance() tip-bot for Peter Zijlstra
2017-09-07 15:03 ` [PATCH 3/4] sched: WARN when migrating to an offline CPU Peter Zijlstra
2017-09-12 18:05 ` [tip:sched/urgent] sched/core: WARN() " tip-bot for Peter Zijlstra
2017-09-28 9:14 ` [PATCH 3/4] sched: WARN " Sasha Levin
2017-09-28 10:35 ` Peter Zijlstra
2017-09-28 11:03 ` Levin, Alexander (Sasha Levin)
2017-09-28 11:42 ` Peter Zijlstra
2017-09-29 11:11 ` Peter Zijlstra
2017-10-07 2:07 ` Levin, Alexander (Sasha Levin)
2017-10-07 9:15 ` Peter Zijlstra
[not found] ` <20171007174327.ky6g5viokxg5ysdm@sasha-lappy>
2017-10-09 8:04 ` Peter Zijlstra
2017-10-10 1:18 ` Levin, Alexander (Sasha Levin) [this message]
2017-09-07 15:03 ` [PATCH 4/4] sched/debug: Add debugfs knob for "sched_debug" Peter Zijlstra
2017-09-12 18:05 ` [tip:sched/urgent] " tip-bot for Peter Zijlstra
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