linux-kernel - Re: [PATCH] trace: add ability to set a target task for events (v2)

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Message-ID: <20120711151728.GE17991@somewhere>
Date:	Wed, 11 Jul 2012 17:17:31 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Andrew Vagin <avagin@...nvz.org>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Arun Sharma <asharma@...com>
Subject: Re: [PATCH] trace: add ability to set a target task for events (v2)

On Wed, Jul 11, 2012 at 05:12:04PM +0200, Peter Zijlstra wrote:
> On Wed, 2012-07-11 at 16:55 +0200, Peter Zijlstra wrote:
> > Right.. back when I did that the plan was to make PERF_SAMPLE_PERIOD fix
> > that, of course that never seemed to have happened.
> > 
> > With PERF_SAMPLE_PERIOD you can simply write the 1b into the period of 1
> > event and be done with it. 
> 
> It did! Andrew fixed it..

Ah! Then may be we need to force PERF_SAMPLE_PERIOD on tracepoints from
perf tools. I need to check that.
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