linux-kernel - Re: [RFC][PATCH 3/9] perf: export registerred pmus via sysfs

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Date:	Tue, 11 May 2010 12:09:06 +0200
From:	stephane eranian <eranian@...glemail.com>
To:	Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Lin Ming <ming.m.lin@...el.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"Gary.Mohr@...l.com" <Gary.Mohr@...l.com>,
	"arjan@...ux.intel.com" <arjan@...ux.intel.com>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Paul Mackerras <paulus@...ba.org>,
	"David S. Miller" <davem@...emloft.net>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Paul Mundt <lethal@...ux-sh.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Will Deacon <will.deacon@....com>,
	Maynard Johnson <mpjohn@...ibm.com>,
	Carl Love <carll@...ibm.com>
Subject: Re: [RFC][PATCH 3/9] perf: export registerred pmus via sysfs

Corey,

On Tue, May 11, 2010 at 1:13 AM, Corey Ashford
<cjashfor@...ux.vnet.ibm.com> wrote:
> We'd like to have the capability of hardware-specific symbolic event names in the perf tool by some mechanism, unified or otherwise.  Right now, for the IBM Wire-Speed processor, we are currently not able to use the perf tool because of its lack of symbolic raw event name support.
>
> In the mean time, we are using a pair of demo programs from Stephane Eranian's libpfm4 source tree called "task" and "syst".  These tools use the symbolic event names provided by libpfm4, and use the kernel support from perf_events.
>
I will soon post a patch to make use of libpfm4 in perf, thereby
giving access to all events
unit masks, filters, using symbolic names.
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