linux-kernel - Re: [PATCH] perf record: Fix to honor user freq/interval properly

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Message-ID: <20140609165431.GS25366@two.firstfloor.org>
Date:	Mon, 9 Jun 2014 18:54:31 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Jiri Olsa <jolsa@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH] perf record: Fix to honor user freq/interval properly

On Mon, Jun 09, 2014 at 02:43:37PM +0900, Namhyung Kim wrote:
> When configuring event perf checked a wrong condition that user
> specified both of freq (-F) and period (-c) or the event has no
> default value.  This worked because most of events don't have default
> value and only tracepoint events have default of 1 (and it's not
> desirable to change it for those events).
> 
> However, Andi's downloadable event patch changes the situation so it
> cannot change the value for those events.  Fix it by allowing override
> the default value if user gives one of the options.

Thanks. Looks good. I'll drop my version.

-Andi
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