From: Pavel Machek <pavel@ucw.cz>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Alexey Dobriyan <adobriyan@openvz.org>,
Kirill Korotaev <dev@sw.ru>
Subject: Re: [PATCH] printk deadlocks if called with runqueue lock held
Date: Thu, 24 Jan 2008 10:00:49 +0100 [thread overview]
Message-ID: <20080124090048.GB10217@elf.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.58.0801231335450.9982@gandalf.stny.rr.com>
On Wed 2008-01-23 13:36:12, Steven Rostedt wrote:
>
>
> On Wed, 23 Jan 2008, Pavel Machek wrote:
> >
> > Could try_to_wakeup use trylock, and only avoid wakeup if lock is
> > already held?
> > Pavel
>
> I could imagine a lot of missed wakeups caused by that.
...alternative being suggested is to miss _all_ the wakeups. So
"missing some" seems like better alternative.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
prev parent reply other threads:[~2008-01-24 13:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-18 1:04 Steven Rostedt
2008-01-18 1:19 ` Andrew Morton
2008-01-18 1:57 ` Steven Rostedt
2008-01-18 1:31 ` Linus Torvalds
2008-01-18 1:52 ` Steven Rostedt
2008-01-18 11:04 ` Jiri Kosina
2008-01-18 11:35 ` Steven Rostedt
2008-01-18 14:55 ` Jan Kiszka
2008-01-18 16:26 ` Steven Rostedt
2008-01-18 17:30 ` Linus Torvalds
2008-01-23 13:31 ` Pavel Machek
2008-01-23 18:36 ` Steven Rostedt
2008-01-24 9:00 ` Pavel Machek [this message]
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