From: Valentin Schneider <valentin.schneider@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
tglx@linutronix.de, mingo@kernel.org, bigeasy@linutronix.de,
qais.yousef@arm.com, swood@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
bristot@redhat.com, vincent.donnefort@arm.com, tj@kernel.org,
ouwen210@hotmail.com, Qian Cai <cai@redhat.com>
Subject: [PATCH 0/2] workqueue: Fix migrate_disable hotplug changes vs kworker affinity
Date: Thu, 10 Dec 2020 16:38:28 +0000 [thread overview]
Message-ID: <20201210163830.21514-1-valentin.schneider@arm.com> (raw)
Hi folks,
This should fix the issue reported by Qian at [1]. Dietmar mentioned some
other issue with hotplug & deadline tasks, but that's being investigated by
someone else ATM.
I would like to mention I suspect this bug comes straight from $hell, as
I've never ever had to fight off so many (mostly unrelated) issues while
looking into it. Distro kernel being mangled, git tree corruption, periods of
heisenbugism...
Cheers,
Valentin
[1]: https://lore.kernel.org/r/ff62e3ee994efb3620177bf7b19fab16f4866845.camel@redhat.com
Valentin Schneider (2):
stop_machine: Add caller debug info to queue_stop_cpus_work
workqueue: Fix affinity of kworkers attached during late hotplug
kernel/stop_machine.c | 1 +
kernel/workqueue.c | 24 +++++++++++++++++-------
2 files changed, 18 insertions(+), 7 deletions(-)
--
2.27.0
next reply other threads:[~2020-12-10 16:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 16:38 Valentin Schneider [this message]
2020-12-10 16:38 ` [PATCH 1/2] stop_machine: Add caller debug info to queue_stop_cpus_work Valentin Schneider
2021-03-23 15:08 ` [tip: sched/core] " tip-bot2 for Valentin Schneider
2020-12-10 16:38 ` [PATCH 2/2] workqueue: Fix affinity of kworkers attached during late hotplug Valentin Schneider
2020-12-11 11:39 ` Vincent Donnefort
2020-12-11 12:41 ` Peter Zijlstra
2020-12-11 12:51 ` Peter Zijlstra
2020-12-11 12:51 ` Valentin Schneider
2020-12-11 13:13 ` Valentin Schneider
2020-12-11 13:16 ` Vincent Donnefort
2020-12-11 12:52 ` [PATCH 0/2] workqueue: Fix migrate_disable hotplug changes vs kworker affinity Peter Zijlstra
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