linux-kernel - Re: [PATCH] sched: fix tracepoint in scheduler.

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Date:	Fri, 4 Apr 2014 14:52:49 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Dongsheng Yang <yangds.fnst@...fujitsu.com>
Cc:	mingo@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched: fix tracepoint in scheduler.

On Thu, Apr 03, 2014 at 08:12:48PM +0800, Dongsheng Yang wrote:
> In function set_task_cpu(), if cpu == new_cpu,
> there is no migration happen. But current trace point
> will raise a migration trace event.
> 
> This patch change trace point to right place,
> only when migration really happen, an event will
> be threw out.

Yeah its there so we can see pointless 'migrations'.
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