From: Lin Ming <ming.m.lin@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Corey Ashford <cjashfor@linux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
"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>,
Paul Mundt <lethal@linux-sh.org>,
lkml <linux-kernel@vger.kernel.org>,
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>,
"greg@kroah.com" <greg@kroah.com>,
Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: [RFC][PATCH 3/9] perf: export registerred pmus via sysfs
Date: Tue, 11 May 2010 17:53:02 +0800 [thread overview]
Message-ID: <1273571582.30322.60.camel@minggr.sh.intel.com> (raw)
In-Reply-To: <1273571322.5605.3523.camel@twins>
On Tue, 2010-05-11 at 17:48 +0800, Peter Zijlstra wrote:
> On Tue, 2010-05-11 at 17:40 +0800, Lin Ming wrote:
> > /sys/devices/system/cpu/cpu0/cpu_hw_events/*
> > /sys/devices/system/cpu/cpu0/cpu_hw_cache_events/*
> > /sys/devices/system/cpu/cpu0/cpu_raw_events/*
> > ....
> > ....
> > /sys/devices/system/cpu/cpuN/cpu_hw_events/*
> > /sys/devices/system/cpu/cpuN/cpu_hw_cache_events/*
> > /sys/devices/system/cpu/cpuN/cpu_raw_events/*
> >
> > Is /sys/class/event_sources/* looks like,
> >
> > /sys/class/event_sources/cpu_hw_events0
> > -> /sys/devices/system/cpu/cpu0/cpu_hw_events
> > ...
> > /sys/class/event_sources/cpu_hw_eventsN
> > -> /sys/devices/system/cpu/cpuN/cpu_hw_events
> >
> > /sys/class/event_sources/cpu_hw_cache_events0
> > -> /sys/devices/system/cpu/cpu0/cpu_hw_events
> > ...
> > /sys/class/event_sources/cpu_hw_cache_eventsN
> > -> /sys/devices/system/cpu/cpuN/cpu_hw_events
>
> Hmm, good question.
>
> No all the cpus would have the same event sources. I'm not sure if we
> can make sysfs understand that though (added GregKH and Kay to CC).
>
> Possibly we'd have to place them at the cpu level, like:
>
> /sys/devices/system/cpu/cpu_*_events/
>
> and have links like:
>
> /sys/devices/system/cpu/cpuN/cpu_*_events ->
> /sys/devices/system/cpu/cpu_*_events/
>
> as well as
>
> /sys/class/event_sources/cpu_*_events ->
> /sys/devices/system/cpu/cpu_*_events/
Ah, I like this idea.
Thanks.
next prev parent reply other threads:[~2010-05-11 9:53 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-10 9:27 Lin Ming
2010-05-10 9:40 ` Peter Zijlstra
2010-05-10 10:11 ` Lin Ming
2010-05-10 10:18 ` Peter Zijlstra
2010-05-10 10:26 ` Lin Ming
2010-05-10 10:35 ` Paul Mundt
2010-05-10 10:58 ` Lin Ming
2010-05-10 11:04 ` Peter Zijlstra
2010-05-10 11:11 ` Lin Ming
2010-05-10 11:18 ` Lin Ming
2010-05-10 11:27 ` Peter Zijlstra
2010-05-10 11:36 ` Peter Zijlstra
2010-05-10 11:48 ` Ingo Molnar
2010-05-10 11:39 ` Russell King
2010-05-10 11:42 ` Peter Zijlstra
2010-05-10 20:25 ` Will Deacon
2010-05-11 6:34 ` Peter Zijlstra
2010-05-10 11:43 ` Ingo Molnar
2010-05-10 11:49 ` Peter Zijlstra
2010-05-10 11:53 ` Ingo Molnar
2010-05-10 23:13 ` Corey Ashford
2010-05-11 6:46 ` Peter Zijlstra
2010-05-11 7:21 ` Ingo Molnar
2010-05-11 8:20 ` Lin Ming
2010-05-11 8:50 ` Peter Zijlstra
2010-05-11 9:03 ` Lin Ming
2010-05-11 9:05 ` Lin Ming
2010-05-11 9:12 ` Peter Zijlstra
2010-05-11 9:18 ` Ingo Molnar
2010-05-11 9:24 ` Peter Zijlstra
2010-05-11 9:31 ` Ingo Molnar
2010-05-11 10:28 ` Lin Ming
2010-05-13 8:28 ` Lin Ming
2010-05-13 8:38 ` Ingo Molnar
2010-05-13 9:22 ` Lin Ming
2010-05-11 9:40 ` Lin Ming
2010-05-11 9:48 ` Peter Zijlstra
2010-05-11 9:53 ` Lin Ming [this message]
2010-05-11 15:17 ` Greg KH
2010-05-12 5:51 ` Paul Mundt
2010-05-12 8:37 ` Peter Zijlstra
2010-05-14 7:04 ` Paul Mundt
2010-05-11 10:09 ` stephane eranian
2010-05-11 14:15 ` Borislav Petkov
2010-05-11 14:25 ` Peter Zijlstra
2010-05-11 15:37 ` Borislav Petkov
2010-05-11 15:46 ` Peter Zijlstra
2010-05-10 23:54 ` Corey Ashford
2010-05-11 6:50 ` Peter Zijlstra
2010-05-11 2:43 ` Lin Ming
2010-05-11 6:35 ` Peter Zijlstra
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