From: Andrew Morton <akpm@zip.com.au>
To: anton wilson <anton.wilson@camotion.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: printks in the scheduler freeze during scripts
Date: Thu, 27 Jun 2002 07:15:51 -0700 [thread overview]
Message-ID: <3D1B1E17.EC626EFD@zip.com.au> (raw)
In-Reply-To: 200206271349.JAA16318@test-area.com
anton wilson wrote:
>
> I'm running linux 2.4.17 and Redhat 7.2 with the preemptive and low latency
> patches, and whenever I stick printks in the scheduler(void) my system
> freezes somewhere after it tries to load the system font. Where it stops
> seems to be random. I can only run under single user mode without my system
> freezing. Does anyone have any clues why? Or any better ways to go about
> tracking the scheduling of processes in the scheduler?
>
printk() calls wake_up(), to give klogd a kick. So a printk
from the scheduler tends to deadlock. Just delete the
last two lines of kernel/printk.c:release_console_sem() and it
should work OK.
next prev parent reply other threads:[~2002-06-27 14:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-27 14:03 printks in the scheduler freeze during scripts anton wilson
2002-06-27 14:15 ` Andrew Morton [this message]
2002-06-28 11:56 ` Michael S. Zick
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