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

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Message-ID: <CA+qeAOp5G94n5d1wOGe876d1HkSTVxN9hVbr9jLhGmSGvsAtJA@mail.gmail.com>
Date:	Wed, 21 May 2014 18:03:53 +0800
From:	Dongsheng Yang <dongsheng081251@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Dongsheng Yang <yangds.fnst@...fujitsu.com>, mingo@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched: fix tracepoint in scheduler.

Hi Peter, did you forget to take this patch? :-)

On Fri, Apr 4, 2014 at 8:52 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> 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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