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Date: Thu, 8 Apr 2010 23:33:15 +0200
Message-ID: <v2lbd4cb8901004081433l7bff8d3cq2f11ca6c222e8e87@mail.gmail.com>
Subject: Re: [PATCH] perf_events: fix bogus warn_on(_once) in 
	perf_prepare_sample()
From: Stephane Eranian <eranian@google.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org, mingo@elte.hu, paulus@samba.org,
       davem@davemloft.net, fweisbec@gmail.com, robert.richter@amd.com,
       perfmon2-devel@lists.sf.net, eranian@gmail.com
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On Thu, Apr 8, 2010 at 11:24 PM, Peter Zijlstra <peterz@infradead.org> wrote:
> 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.
>
Not sure I understand what you mean here.

>>   - attribute PID/TID in system-wide mode
>
> flush on context switches.
>
cost?