linux-kernel - Re: [PATCH] perf_events: fix bogus warn_on(_once) in perf_prepare

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Message-ID: <1270761860.20295.3162.camel@laptop>
Date:	Thu, 08 Apr 2010 23:24:20 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, paulus@...ba.org,
	davem@...emloft.net, fweisbec@...il.com, robert.richter@....com,
	perfmon2-devel@...ts.sf.net, eranian@...il.com
Subject: Re: [PATCH] perf_events: fix bogus warn_on(_once) in 
 perf_prepare_sample()

On Thu, 2010-04-08 at 23:18 +0200, Stephane Eranian wrote:
> I am not sure I understand what you mean by buffered PEBS. Are you talking
> about using PEBS buffer bigger than one entry?

Yep.

> If so, how can you do:
>   - the LBR based fixups for multiple samples (on PMU interrupt)

Not, so it would be the offset on.

>   - attribute PID/TID in system-wide mode

flush on context switches.

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