From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Lee Revell <rlrevell@joe-job.com>
Cc: root@chaos.analogic.com, Linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: printk() with a spin-lock held.
Date: Sat, 23 Oct 2004 15:48:41 +1000 [thread overview]
Message-ID: <4179F0B9.20908@yahoo.com.au> (raw)
In-Reply-To: <1098503815.13176.2.camel@krustophenia.net>
Lee Revell wrote:
> On Fri, 2004-10-22 at 15:07 -0400, Richard B. Johnson wrote:
>
>>Linux-2.6.9 will bug-check and halt if my code executes
>>a printk() with a spin-lock held.
>>
>>Is this the intended behavior?
>
>
> Yes. printk() can sleep. No sleeping with a spinlock held.
>
You can call printk anywhere (except from the scheduler).
Or if you're doing tricky things with preempt.
>
>>If so, NotGood(tm).
>
>
> See above. If you think you can improve the situation, patches are
> welcome, as always.
>
In this case, the patch would be to himself though.
next prev parent reply other threads:[~2004-10-23 5:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-22 19:07 printk() with a spin-lock held Richard B. Johnson
2004-10-23 3:56 ` Lee Revell
2004-10-23 5:27 ` Andrew Morton
2004-10-23 7:04 ` Lee Revell
2004-10-23 5:48 ` Nick Piggin [this message]
2004-10-25 12:32 ` Richard B. Johnson
2004-10-25 18:41 ` Lee Revell
2004-10-25 19:07 ` linux-os
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=4179F0B9.20908@yahoo.com.au \
--to=nickpiggin@yahoo.com.au \
--cc=linux-kernel@vger.kernel.org \
--cc=rlrevell@joe-job.com \
--cc=root@chaos.analogic.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.