From: John Ogness <john.ogness@linutronix.de>
To: Sergey Senozhatsky <senozhatsky@chromium.org>,
Petr Mladek <pmladek@suse.com>
Cc: Peter Geis <pgwipeout@gmail.com>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip@lists.infradead.org>
Subject: Re: [BUG] Threaded printk breaks early debugging
Date: Mon, 13 Jun 2022 01:08:23 +0206 [thread overview]
Message-ID: <8735g9mqo0.fsf@jogness.linutronix.de> (raw)
In-Reply-To: <YqVZ4CyWTiDgngkA@google.com>
On 2022-06-12, Sergey Senozhatsky <senozhatsky@chromium.org> wrote:
> Should a situation when we have only one online CPU be enough of a
> reason to do direct printing? Otherwise we might not have CPUs to
> wakeup khtread on, e.g. when CPU that printk is in atomic section for
> too long.
IMHO, no. Especially in that situation, we do not want printk causing
that atomic section to become even longer. If the machine has entered
normal operation, we want printk out of the way.
John Ogness
next prev parent reply other threads:[~2022-06-12 23:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-10 12:48 Peter Geis
2022-06-10 15:05 ` John Ogness
2022-06-10 15:34 ` Peter Geis
2022-06-12 2:57 ` Sergey Senozhatsky
2022-06-12 13:30 ` Peter Geis
2022-06-12 23:08 ` John Ogness
2022-06-12 23:30 ` Peter Geis
2022-06-13 2:23 ` John Ogness
2022-06-13 15:11 ` Petr Mladek
2022-06-13 22:20 ` Peter Geis
2022-06-14 8:38 ` Petr Mladek
2022-06-13 11:24 ` Petr Mladek
2022-06-12 3:13 ` Sergey Senozhatsky
2022-06-12 23:02 ` John Ogness [this message]
2022-06-13 3:49 ` Sergey Senozhatsky
2022-06-13 8:30 ` John Ogness
2022-06-13 9:05 ` Sergey Senozhatsky
2022-06-13 10:14 ` Petr Mladek
2022-06-13 16:11 ` David Laight
2022-06-14 8:37 ` Petr Mladek
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=8735g9mqo0.fsf@jogness.linutronix.de \
--to=john.ogness@linutronix.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=pgwipeout@gmail.com \
--cc=pmladek@suse.com \
--cc=senozhatsky@chromium.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
Powered by JetHome