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Message-ID: <87sifg9cq7.fsf@ashishki-desk.ger.corp.intel.com>
Date: Mon, 12 Jan 2015 18:37:36 +0200
From: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
Robert Richter <rric@...nel.org>,
Frederic Weisbecker <fweisbec@...il.com>,
Mike Galbraith <efault@....de>,
Paul Mackerras <paulus@...ba.org>,
Stephane Eranian <eranian@...gle.com>,
Andi Kleen <ak@...ux.intel.com>, kan.liang@...el.com,
adrian.hunter@...el.com, markus.t.metzger@...el.com,
mathieu.poirier@...aro.org, acme@...radead.org
Subject: Re: [PATCH v8 12/14] x86: perf: intel_pt: Intel PT PMU driver
Peter Zijlstra <peterz@...radead.org> writes:
> Also, if its already enabled, should we not return ENODEV as well, no
> saying who or what programmed it, we should not be touching it.
Or EBUSY?
Regards,
--
Alex
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