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Message-ID: <20071004080217.GE9176@elte.hu>
Date: Thu, 4 Oct 2007 10:02:17 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Mike Kravetz <kravetz@...ibm.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Steven Rostedt <rostedt@...dmis.org>,
Clark Williams <williams@...hat.com>
Subject: Re: -rt scheduling: wakeup bug?
* Mike Kravetz <kravetz@...ibm.com> wrote:
> > if (rq->curr && p && rq && _need_resched())
> > trace_special_pid(p->pid, PRIO(p), PRIO(rq->curr));
>
> Not an issue with the patch, just that last bit of code pulled in for
> context. I don't think it is a bug, but the checking of 'rq' after
> checking 'rq->curr' just doesn't look right (or necessary). Could it
> just be an artifact from earlier versions of the code?
yeah, you are right - and rq shouldnt ever be NULL there anyway.
Ingo
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