From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Jones <davej@redhat.com>
Subject: Re: [patch] perf_event_open enable sysfs exported events
Date: Wed, 19 Jun 2013 11:27:22 -0400
Message-ID: <20130619152722.GA22109@redhat.com>
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To: Vince Weaver <vincent.weaver@maine.edu>
Cc: Tommi Rantala <tt.rantala@gmail.com>, trinity@vger.kernel.org

On Thu, Jun 13, 2013 at 03:58:37PM -0400, Vince Weaver wrote:
 > On Thu, 13 Jun 2013, Tommi Rantala wrote:
 > 
 > > Unable to opendir /sys/bus/event_source/devices : Resource temporarily
 > > unavailable
 >
 > Though in the case where /sys/bus/event_source/devices isn't available
 > trinity will try opening it again each time it tries to do a 
 > PERF_TYPE_READ_FROM_SYSFS type (1 time in 7).  Not sure if it's
 > worth rate-limiting that.

I'm puzzled why I'm seeing opendir() fail with -ENOMEM when there's gigabytes
of free memory available.  Likewise, getting -EAGAIN seems.. weird.

Is there actually a problem there ? Or can we just remove the output from
the failure paths, and fail silently ?

init_pmus might be simpler if it was converted to use nftw() too.

	Dave