mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Takashi Iwai <tiwai@suse.de>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: LKML <linux-kernel@vger.kernel.org>, Tejun Heo <tj@kernel.org>,
	Lai Jiangshan <jiangshanlai@gmail.com>
Subject: Re: An announcement for kernel-global workqueue users.
Date: Tue, 22 Mar 2022 16:22:16 +0100	[thread overview]
Message-ID: <s5ha6dixb9z.wl-tiwai@suse.de> (raw)
In-Reply-To: <49925af7-78a8-a3dd-bce6-cfc02e1a9236@I-love.SAKURA.ne.jp>

On Mon, 21 Mar 2022 02:24:23 +0100,
Tetsuo Handa wrote:
> 
> Hello.
> 
> The Linux kernel provides kernel-global WQs (namely, system_wq, system_highpri_wq,
> system_long_wq, system_unbound_wq, system_freezable_wq, system_power_efficient_wq
> and system_freezable_power_efficient_wq). But since attempt to flush kernel-global
> WQs has possibility of deadlock, Tejun Heo thinks that we should stop calling
> flush_scheduled_work() and flush_workqueue(system_*). Such callers as of Linux 5.17
> are listed below.
> 
> ----------
> $ git grep -nF 'flush_scheduled_work()'
(snip)
> sound/soc/intel/atom/sst/sst.c:363:     flush_scheduled_work();

At least this one looks superfluous, the call can be simply dropped.
I'm going to submit a fix patch.


thanks,

Takashi

      parent reply	other threads:[~2022-03-22 15:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-21  1:24 Tetsuo Handa
2022-03-21 16:45 ` Tejun Heo
2022-03-22 15:22 ` Takashi Iwai [this message]

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=s5ha6dixb9z.wl-tiwai@suse.de \
    --to=tiwai@suse.de \
    --cc=jiangshanlai@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=penguin-kernel@I-love.SAKURA.ne.jp \
    --cc=tj@kernel.org \
    /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
all inboxes | Powered by JetHome®