From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@amd64.org>, Lin Ming <ming.m.lin@intel.com>,
Greg KH <greg@kroah.com>,
Corey Ashford <cjashfor@linux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Paul Mundt <lethal@linux-sh.org>,
"eranian@gmail.com" <eranian@gmail.com>,
"Gary.Mohr@Bull.com" <Gary.Mohr@bull.com>,
"arjan@linux.intel.com" <arjan@linux.intel.com>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
Paul Mackerras <paulus@samba.org>,
"David S. Miller" <davem@davemloft.net>,
Russell King <rmk+kernel@arm.linux.org.uk>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Will Deacon <will.deacon@arm.com>,
Maynard Johnson <mpjohn@us.ibm.com>, Carl Love <carll@us.ibm.com>,
Kay Sievers <kay.sievers@vrfy.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [RFC][PATCH v2 06/11] perf: core, export pmus via sysfs
Date: Wed, 19 May 2010 09:23:32 +0200 [thread overview]
Message-ID: <20100519072332.GE9618@elte.hu> (raw)
In-Reply-To: <1274253427.5605.10131.camel@twins>
* Peter Zijlstra <peterz@infradead.org> wrote:
> On Wed, 2010-05-19 at 09:06 +0200, Borislav Petkov wrote:
> >
> > have we considered the per-cpu granularity of MCEs
> > here and if yes, how to represent that?
>
> Uhm, by opening the MCE event on a particular cpu?
> Remember that sys_perf_event_open() has a cpu target.
>
> The thing is, CPUs are assumed symmetric, thus also all
> MCE events are symmetric, one CPU cannot generate other
> MCE than another. So the only thing that differs is
> where you want to listen for them.
Note, this does not preclude Linux from supporting
assymetric MP, should the need arise: if MP assymetry is
supported then that can (and should) be expressed in the
sysfs topology accordingly - and the moment the assymetric
MP topology is enumerated in sysfs it gives a place for
the different event_source's to live there as well.
Thanks,
Ingo
next prev parent reply other threads:[~2010-05-19 7:24 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-19 1:46 [RFC][PATCH v2 06/11] perf: core, export pmus via sysfs Lin Ming
2010-05-18 20:05 ` Greg KH
2010-05-19 2:34 ` Lin Ming
2010-05-19 2:48 ` Greg KH
2010-05-19 3:40 ` Lin Ming
2010-05-19 5:00 ` Greg KH
2010-05-19 6:32 ` Lin Ming
2010-05-19 7:14 ` Peter Zijlstra
2010-05-20 18:42 ` Greg KH
2010-05-20 19:52 ` Peter Zijlstra
2010-05-20 20:19 ` Greg KH
2010-05-20 20:14 ` Ingo Molnar
2010-05-20 23:12 ` Greg KH
2010-05-21 8:03 ` Peter Zijlstra
2010-05-21 9:40 ` [rfc] Describe events in a structured way " Ingo Molnar
[not found] ` <AANLkTinJeYJtCg2aRWhHTcf5E2-dN2-oAfEJ8tAtFjb9@mail.gmail.com>
2010-06-01 2:34 ` Lin Ming
2010-06-08 18:43 ` Ingo Molnar
[not found] ` <AANLkTimf1Z0N9cv2Pu2qTTUscn4utC37zOPelCbqQoPv@mail.gmail.com>
2010-06-21 8:55 ` Lin Ming
[not found] ` <1277112858.3618.16.camel@jlt3.sipsolutions.net>
[not found] ` <1277187920.4467.3.camel@minggr.sh.intel.com>
[not found] ` <1277189971.3637.5.camel@jlt3.sipsolutions.net>
2010-06-22 7:22 ` Lin Ming
2010-06-22 7:33 ` Johannes Berg
2010-06-22 7:39 ` Johannes Berg
2010-06-22 8:04 ` Lin Ming
2010-06-22 8:16 ` Johannes Berg
2010-06-22 7:47 ` Lin Ming
2010-06-22 7:52 ` Johannes Berg
2010-06-24 9:36 ` Ingo Molnar
2010-06-24 16:14 ` Johannes Berg
2010-06-24 17:33 ` Ingo Molnar
2010-06-29 6:15 ` Lin Ming
2010-06-29 8:55 ` Ingo Molnar
2010-06-29 9:20 ` Lin Ming
2010-06-29 10:26 ` Ingo Molnar
2010-07-02 8:06 ` Lin Ming
2010-07-03 12:54 ` Ingo Molnar
2010-07-17 0:20 ` Corey Ashford
2010-07-20 5:48 ` Lin Ming
2010-07-20 15:19 ` Robert Richter
2010-07-20 17:50 ` Corey Ashford
2010-07-20 18:30 ` Robert Richter
2010-07-20 21:18 ` Corey Ashford
2010-07-20 17:43 ` Corey Ashford
2010-05-19 7:06 ` [RFC][PATCH v2 06/11] perf: core, export pmus " Borislav Petkov
2010-05-19 7:17 ` Peter Zijlstra
2010-05-19 7:23 ` Ingo Molnar [this message]
2010-05-18 20:07 ` Greg KH
2010-05-19 2:37 ` Lin Ming
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