From: Robert Richter <robert.richter@amd.com>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Stephane Eranian <eranian@google.com>,
Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Paul Mackerras <paulus@samba.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH] perf: align raw sample data on 64-bit boundaries
Date: Fri, 28 May 2010 19:35:55 +0200 [thread overview]
Message-ID: <20100528173555.GP21799@erda.amd.com> (raw)
In-Reply-To: <20100524212459.GA9707@nowhere>
On 24.05.10 17:25:01, Frederic Weisbecker wrote:
> It doesn't duplicate much code paths, we only have a few corner cases to
> plug in. And more importantly, that would be temporary if we schedule the
> older PERF_SAMPLE_RAW in, say, three releases from now.
>
> This ensures an easy forward compatibility (older perf tools -> newer kernel).
> But the backward compatibility is less easy (newer perf tools -> older kernel)
> as it means we need to test dynamically if we have PERF_SAMPLE_RAW_ALIGNED,
> otherwise we need to fall back to using the older one.
Frederic, I will send an updated version with PERF_SAMPLE_RAW_ALIGNED.
-Robert
--
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@amd.com
next prev parent reply other threads:[~2010-05-28 17:36 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-13 20:23 [PATCH 00/12] perf: introduce model specific events and AMD IBS Robert Richter
2010-04-13 20:23 ` [PATCH 01/12] perf, x86: move perfctr init code to x86_setup_perfctr() Robert Richter
2010-05-07 18:42 ` [tip:perf/core] perf, x86: Move " tip-bot for Robert Richter
2010-04-13 20:23 ` [PATCH 02/12] perf, x86: moving x86_setup_perfctr() Robert Richter
2010-05-07 18:42 ` [tip:perf/core] perf, x86: Move x86_setup_perfctr() tip-bot for Robert Richter
2010-04-13 20:23 ` [PATCH 03/12] perf, x86: call x86_setup_perfctr() from .hw_config() Robert Richter
2010-05-07 18:42 ` [tip:perf/core] perf, x86: Call " tip-bot for Robert Richter
2010-04-13 20:23 ` [PATCH 04/12] perf: introduce flag for model specific events Robert Richter
2010-04-13 20:23 ` [PATCH 05/12] perf, x86: pass enable bit mask to __x86_pmu_enable_event() Robert Richter
2010-05-07 18:43 ` [tip:perf/core] perf, x86: Pass " tip-bot for Robert Richter
2010-04-13 20:23 ` [PATCH 06/12] perf, x86: use weight instead of cmask in for_each_event_constraint() Robert Richter
2010-05-07 18:43 ` [tip:perf/core] perf, x86: Use " tip-bot for Robert Richter
2010-04-13 20:23 ` [PATCH 07/12] perf, x86: introduce bit range for special pmu events Robert Richter
2010-04-13 20:23 ` [PATCH 08/12] perf, x86: modify some code to allow the introduction of ibs events Robert Richter
2010-04-13 20:23 ` [PATCH 09/12] perf, x86: implement IBS feature detection Robert Richter
2010-04-13 20:23 ` [PATCH 10/12] perf, x86: setup NMI handler for IBS Robert Richter
2010-04-15 12:57 ` Peter Zijlstra
2010-04-15 13:11 ` Robert Richter
2010-04-19 16:04 ` Robert Richter
2010-04-13 20:23 ` [PATCH 11/12] perf, x86: implement AMD IBS event configuration Robert Richter
2010-04-19 13:46 ` Stephane Eranian
2010-04-20 10:31 ` Robert Richter
2010-04-20 16:05 ` Robert Richter
2010-04-21 8:47 ` Robert Richter
2010-04-21 9:02 ` Stephane Eranian
2010-04-21 9:21 ` Robert Richter
2010-04-21 10:54 ` Robert Richter
2010-04-21 11:37 ` Stephane Eranian
2010-04-21 16:58 ` Robert Richter
2010-04-22 17:32 ` Stephane Eranian
2010-05-11 13:57 ` Robert Richter
2010-04-13 20:23 ` [PATCH 12/12] perf, x86: implement the ibs interrupt handler Robert Richter
2010-04-19 12:19 ` Stephane Eranian
2010-04-20 13:10 ` Robert Richter
2010-04-22 14:45 ` Robert Richter
2010-05-07 15:28 ` [PATCH] perf: fix raw sample size if no sampling data is attached Robert Richter
2010-05-07 15:41 ` Peter Zijlstra
2010-05-07 19:48 ` Robert Richter
2010-05-18 15:12 ` [RFC PATCH] perf: align raw sample data on 64-bit boundaries Robert Richter
2010-05-19 7:39 ` Frederic Weisbecker
2010-05-19 9:31 ` Robert Richter
2010-05-24 21:25 ` Frederic Weisbecker
2010-05-28 17:35 ` Robert Richter [this message]
2010-04-13 20:45 ` [osrc-patches] [PATCH 00/12] perf: introduce model specific events and AMD IBS Robert Richter
2010-04-14 12:31 ` Robert Richter
2010-04-15 7:41 ` Peter Zijlstra
2010-04-15 7:44 ` Peter Zijlstra
2010-04-15 15:16 ` Robert Richter
2010-04-21 12:11 ` Peter Zijlstra
2010-04-21 13:21 ` Stephane Eranian
2010-04-21 18:26 ` Robert Richter
2010-04-21 18:40 ` Stephane Eranian
2010-04-21 16:28 ` Robert Richter
2010-04-28 16:16 ` [osrc-patches] " Robert Richter
2010-05-04 14:18 ` Peter Zijlstra
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