From: Pierre Ossman <drzeus-list@drzeus.cx>
To: Neil Horman <nhorman@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Tasklet usage?
Date: Fri, 15 Oct 2004 15:46:40 +0200 [thread overview]
Message-ID: <416FD4C0.3090403@drzeus.cx> (raw)
In-Reply-To: <416FD177.1050404@redhat.com>
Neil Horman wrote:
> Pierre Ossman wrote:
>> * Can tasklets be preempted?
>
> A tasklet can get preempted by a hard interrupt, but tasklets run in
> interrupt context, so don't do anything in a tasklet that can call
> schedule.
Being preempted by hard interrupts is sort of the point of moving the
stuff to a tasklet. Just as long as other tasklets and user space cannot
preempt it.
Are there any concerns when it comes to locking and tasklets? I've tried
finding kernel-locking-HOWTO referenced in kernel-docs.txt but the link
is dead and I can't find a mirror.
Rgds
Pierre
next prev parent reply other threads:[~2004-10-15 13:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-15 13:14 Tasklet usage? Pierre Ossman
2004-10-15 13:32 ` Neil Horman
2004-10-15 13:46 ` Pierre Ossman [this message]
2004-10-15 14:09 ` Neil Horman
2004-10-16 15:17 ` Pierre Ossman
2004-10-16 16:03 ` Roland Dreier
2004-10-16 16:36 ` Pierre Ossman
2004-10-16 17:51 ` Roland Dreier
[not found] <fa.dvqma04.n40gos@ifi.uio.no>
2004-10-16 1:46 ` Robert Hancock
[not found] <fa.hf0cjfr.n3qt2d@ifi.uio.no>
[not found] ` <fa.doac9ep.1ckig8r@ifi.uio.no>
2004-10-16 17:53 ` Robert Hancock
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