linux-kernel - Re: [PATCH] perf: Update event buffer tail when overwriting old events

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Message-ID: <20130709074046.GF25631@dyad.programming.kicks-ass.net>
Date:	Tue, 9 Jul 2013 09:40:46 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	"Yan, Zheng" <zheng.z.yan@...el.com>, linux-kernel@...r.kernel.org,
	mingo@...e.hu, eranian@...gle.com, ak@...ux.intel.com
Subject: Re: [PATCH] perf: Update event buffer tail when overwriting old
 events

On Tue, Jul 09, 2013 at 03:18:20PM +0900, Namhyung Kim wrote:
> Hi Peter,
> 
> On Mon, 8 Jul 2013 14:15:57 +0200, Peter Zijlstra wrote:
> [SNIP]
> > +static void 
> > +perf_event_set_overflow(struct perf_event *event, struct ring_buffer *rb)
> > +{
> > +	if (event->overflow_handler != perf_event_output ||
> 
> I guess you wanted "&&" instead of "||" here.

Uhm.. yeah. /me dons the brown paper bag.
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