linux-kernel - Re: [PATCH v2 1/6] perf: Add interface to add general events to sysfs

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Message-ID: <1311659443.3938.1522.camel@minggr.sh.intel.com>
Date:	Tue, 26 Jul 2011 13:50:43 +0800
From:	Lin Ming <ming.m.lin@...el.com>
To:	Greg KH <gregkh@...e.de>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	Stephane Eranian <eranian@...gle.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Kay Sievers <kay.sievers@...y.org>
Subject: Re: [PATCH v2 1/6] perf: Add interface to add general events to
 sysfs

On Tue, 2011-07-26 at 12:42 +0800, Greg KH wrote:
> On Tue, Jul 26, 2011 at 09:06:07AM +0800, Lin Ming wrote:
> > On Mon, 2011-07-25 at 23:20 +0800, Greg KH wrote:
> > > On Mon, Jul 25, 2011 at 10:32:03AM +0200, Peter Zijlstra wrote:
> > > > On Mon, 2011-07-25 at 16:11 +0800, Lin Ming wrote:
> > > > > It's strange that I didn't find a way to check if a directory is present
> > > > > in sysfs. Any hint?
> > > > 
> > > > sysfs is voodoo for me, best I can come up with is, ask the sysfs
> > > > folks ;-)
> > > > 
> > > > Kay, Greg?
> > > 
> > > What are you trying to do here specifically?
> > 
> > Now there are perf event source devices in sysfs.
> 
> As of what kernel release?

Since v2.6.38-rc1, commit abe4340(perf: Sysfs enumeration)

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