From: Daniel Jordan <daniel.m.jordan@oracle.com>
To: Peter Zijlstra <peterz@infradead.org>,
Alexey Klimov <aklimov@redhat.com>
Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
yury.norov@gmail.com, tglx@linutronix.de, jobaker@redhat.com,
audralmitchel@gmail.com, arnd@arndb.de,
gregkh@linuxfoundation.org, rafael@kernel.org, tj@kernel.org,
lizefan@huawei.com, qais.yousef@arm.com, hannes@cmpxchg.org,
klimov.linux@gmail.com
Subject: Re: [RFC][PATCH] cpu/hotplug: wait for cpuset_hotplug_work to finish on cpu online
Date: Tue, 08 Dec 2020 21:40:57 -0500 [thread overview]
Message-ID: <87k0tritvq.fsf@oracle.com> (raw)
In-Reply-To: <20201207083827.GD3040@hirez.programming.kicks-ass.net>
Peter Zijlstra <peterz@infradead.org> writes:
>> The nature of this bug is also described here (with different consequences):
>> https://lore.kernel.org/lkml/20200211141554.24181-1-qais.yousef@arm.com/
>
> Yeah, pesky deadlocks.. someone was going to try again.
I dug up the synchronous patch
https://lore.kernel.org/lkml/1579878449-10164-1-git-send-email-prsood@codeaurora.org/
but surprisingly wasn't able to reproduce the lockdep splat from
https://lore.kernel.org/lkml/F0388D99-84D7-453B-9B6B-EEFF0E7BE4CC@lca.pw/
even though I could hit it a few weeks ago. I'm going to try to mess
with it later, but don't let me hold this up.
next prev parent reply other threads:[~2020-12-09 2:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-03 17:14 [RFC][PATCH] cpu/hotplug: wait for cpuset_hotplug_work to finish on cpu online Alexey Klimov
2020-12-07 8:38 ` Peter Zijlstra
2020-12-09 2:40 ` Daniel Jordan [this message]
2021-01-15 3:21 ` Daniel Jordan
2021-01-19 16:52 ` Alexey Klimov
2021-01-21 2:09 ` Daniel Jordan
2020-12-09 2:09 ` Daniel Jordan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87k0tritvq.fsf@oracle.com \
--to=daniel.m.jordan@oracle.com \
--cc=aklimov@redhat.com \
--cc=arnd@arndb.de \
--cc=audralmitchel@gmail.com \
--cc=cgroups@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=hannes@cmpxchg.org \
--cc=jobaker@redhat.com \
--cc=klimov.linux@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lizefan@huawei.com \
--cc=peterz@infradead.org \
--cc=qais.yousef@arm.com \
--cc=rafael@kernel.org \
--cc=tglx@linutronix.de \
--cc=tj@kernel.org \
--cc=yury.norov@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).