linux-kernel - Re: [PATCH 5/6][v4]: perf: Create a sysfs entry for Power event format

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Message-ID: <20130226200343.GA21543@us.ibm.com>
Date:	Tue, 26 Feb 2013 12:03:43 -0800
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	Michael Ellerman <michael@...erman.id.au>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>, robert.richter@....com,
	Anton Blanchard <anton@....ibm.com>,
	linux-kernel@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>, linuxppc-dev@...abs.org,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Jiri Olsa <jolsa@...hat.com>, benh@...nel.crashing.org
Subject: Re: [PATCH 5/6][v4]: perf: Create a sysfs entry for Power event
 format

Michael Ellerman [michael@...erman.id.au] wrote:
| On Tue, Jan 22, 2013 at 10:26:13PM -0800, Sukadev Bhattiprolu wrote:
| > 
| > [PATCH 5/6][v4]: perf: Create a sysfs entry for Power event format
| > 
| > Create a sysfs entry, '/sys/bus/event_source/devices/cpu/format/event'
| > which describes the format of a POWER cpu.
| 
| Did this patch go upstream? I don't see it.

Hmm, patches 1..4,6 are in linux-tip and Arnaldo's trees but patch 5 is
in neither.

| 
| If not, please don't merge it.
| 
| > The format of the event is the same for all POWER cpus at least in
| > (Power6, Power7), so bulk of this change is common in the code common
| > to POWER cpus.
| 
| No. The event format is different on most POWER cpus, in particular it
| is different on Power6 and Power7, and will be different again on
| Power8.

Sigh.  The port of this patchset to Power6 has not started yet.

But this patchset does work on Power7 correct ?

If so, and we figure out what happened to patch 5, can we add a patch to
to move the format code to power7-pmu.c ?

Sukadev

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