From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Vince Weaver <vincent.weaver@maine.edu>,
linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
eranian@gmail.com, "Meadows,
Lawrence F" <lawrence.f.meadows@intel.com>
Subject: Re: [PATCH 1/1] perf, Add support for Xeon-Phi PMU
Date: Tue, 25 Sep 2012 14:01:26 +0200 [thread overview]
Message-ID: <1348574486.3881.43.camel@twins> (raw)
In-Reply-To: <20120925114225.GF14490@moon>
On Tue, 2012-09-25 at 15:42 +0400, Cyrill Gorcunov wrote:
> Guys, letme re-read this whole mail thread first since I have no clue
> what this remapping about ;)
x86_setup_perfctr() / set_ext_hw_attr() have special purposed 0 and -1
config values to mean -ENOENT and -EINVAL resp.
This means neither config value can be a 'real' event. Now it turns out
Xeon-Phi has an actual event 0, which is masked by these special case
thingies.
next prev parent reply other threads:[~2012-09-25 12:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-20 17:03 [PATCH 1/1] perf, Add support for Xeon-Phi PMU Vince Weaver
2012-09-24 17:48 ` Meadows, Lawrence F
2012-09-25 11:32 ` Peter Zijlstra
2012-09-25 11:42 ` Cyrill Gorcunov
2012-09-25 11:51 ` Cyrill Gorcunov
2012-09-25 12:01 ` Peter Zijlstra [this message]
2012-09-25 12:05 ` stephane eranian
2012-09-25 12:22 ` Cyrill Gorcunov
2012-09-25 12:23 ` Cyrill Gorcunov
2012-09-25 13:27 ` Cyrill Gorcunov
2012-09-25 14:45 ` Vince Weaver
2012-09-25 14:53 ` Cyrill Gorcunov
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