linux-kernel - [PATCH] Re: 3.1-rc6: wchan not working

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Message-ID: <20110923000346.GA25425@hostway.ca>
Date:	Thu, 22 Sep 2011 17:03:46 -0700
From:	Simon Kirby <sim@...tway.ca>
To:	linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH] Re: 3.1-rc6: wchan not working

On Thu, Sep 22, 2011 at 04:06:47PM -0700, Simon Kirby wrote:

> Without changing .config, /proc/x/wchan seems to now print "schedule" for
> everything; eg, with 0x.ca/sim/ref/3.1-rc6-blue/config-3.1.0-rc6-blue+
> as the .config. I'm currently bisecting a few other regressions as well,
> but will add this to the list, unless it's obvious to anyone...

Probably introduced by c259e01a1ec90063042f758e409cd26b2a0963c8

This patch from Peter (who should probably sign off on it) seems to work:

Tested-by: Simon Kirby <sim@...tway.ca>

diff --git a/kernel/sched.c b/kernel/sched.c
index ec5f472..d249ea8 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4372,7 +4372,7 @@ static inline void sched_submit_work(struct task_struct *tsk)
 		blk_schedule_flush_plug(tsk);
 }
 
-asmlinkage void schedule(void)
+asmlinkage void __sched schedule(void)
 {
 	struct task_struct *tsk = current;
 

Simon-
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