From: Jeff Moyer <jmoyer@redhat.com>
To: Muli Ben-Yehuda <mulix@mulix.org>
Cc: Matt Mackall <mpm@selenic.com>,
linux-kernel@vger.kernel.org, Stelian Pop <stelian@popies.net>,
jgarzik@pobox.com
Subject: Re: [patch] fix netconsole hang with alt-sysrq-t
Date: Thu, 12 Aug 2004 17:32:21 -0400 [thread overview]
Message-ID: <16667.57829.212177.183803@segfault.boston.redhat.com> (raw)
In-Reply-To: <20040812211841.GB17907@granada.merseine.nu>
==> Regarding Re: [patch] fix netconsole hang with alt-sysrq-t; Muli Ben-Yehuda <mulix@mulix.org> adds:
mulix> On Thu, Aug 12, 2004 at 05:01:18PM -0400, Jeff Moyer wrote:
>> So how do you want to deal with this case? We could do something like:
>>
>> int cpu = smp_processor_id();
mulix> That doesn't look right, unless I'm missing something, you could get
mulix> preempted here (between the smp_processor_id() and the
mulix> local_irq_save() and end up with 'cpu' pointing to the wrong CPU.
Would a preempt_disable() be too hideous? Other suggestions?
-Jeff
next prev parent reply other threads:[~2004-08-12 21:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-06 19:29 Jeff Moyer
2004-08-06 19:52 ` Matt Mackall
2004-08-06 20:01 ` Jeff Moyer
2004-08-06 20:26 ` Matt Mackall
2004-08-12 21:01 ` Jeff Moyer
2004-08-12 21:18 ` Muli Ben-Yehuda
2004-08-12 21:32 ` Jeff Moyer [this message]
2004-08-12 21:39 ` Muli Ben-Yehuda
2004-08-13 0:21 ` Matt Mackall
2004-08-13 0:29 ` Matt Mackall
2004-08-16 18:41 ` Jeff Moyer
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