linux-kernel - Re: [RFC][PATCH v2 06/11] perf: core, export pmus via sysfs

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Message-ID: <20100519070655.GB30320@aftab>
Date:	Wed, 19 May 2010 09:06:55 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	Greg KH <greg@...ah.com>, Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	"eranian@...il.com" <eranian@...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>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Will Deacon <will.deacon@....com>,
	Maynard Johnson <mpjohn@...ibm.com>,
	Carl Love <carll@...ibm.com>,
	Kay Sievers <kay.sievers@...y.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH v2 06/11] perf: core, export pmus via sysfs

From: Lin Ming <ming.m.lin@...el.com>
Date: Wed, May 19, 2010 at 10:34:55AM +0800

Hi,

[..]

> 
> For mce,
> /sys/kernel/events/mce/*

have we considered the per-cpu granularity of MCEs here and if yes, how
to represent that?

Something like

/sys/kernel/events/mce/cpus/cpuX/..

or similar maybe. One use case I can think of right now is being able to
inject an MCE on a certain cpu...

Thanks.

-- 
Regards/Gruss,
Boris.

Operating Systems Research Center
Advanced Micro Devices, Inc.
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