From: Peter Zijlstra <peterz@infradead.org>
To: eranian@google.com
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
Subject: Re: [PATCH] perf_events: fix ordering bug in perf_output_sample()
Date: Thu, 18 Mar 2010 19:33:14 +0100 [thread overview]
Message-ID: <1268937194.9440.373.camel@laptop> (raw)
In-Reply-To: <4ba2317a.8109cc0a.2858.ffffcd0c@mx.google.com>
On Thu, 2010-03-18 at 14:42 +0200, Stephane Eranian wrote:
> In order to parse a sample correctly based on the information
> requested via sample_type, the kernel needs to save each component
> in a known order. There is no type value saved with each component.
> The current convention is that each component is saved according to
> the order in enum perf_event_sample_format. But perf_output_sample()
> was not completely following this convention, thereby making samples
> impossible to parse without internal kernel knowledge.
>
> This patch puts things in the right order.
NAK, not so actually, its in the order specified in the
PERF_RECORD_SAMPLE comment.
next prev parent reply other threads:[~2010-03-18 19:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-18 12:42 [PATCH] perf_events: fix ordering bug in perf_output_sample() Stephane Eranian
2010-03-18 18:33 ` Peter Zijlstra [this message]
2010-03-18 21:29 ` Stephane Eranian
2010-03-19 0:14 ` Peter Zijlstra
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