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Date: Fri, 19 Jan 2018 17:45:40 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Tvrtko Ursulin <tursulin@ursulin.net>
Cc: Intel-gfx@lists.freedesktop.org,
        Tvrtko Ursulin <tvrtko.ursulin@intel.com>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
        linux-kernel@vger.kernel.org
Subject: Re: [RFC] perf: Allow fine-grained PMU access control
Message-ID: <20180119164540.GT2228@hirez.programming.kicks-ass.net>
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On Thu, Jan 18, 2018 at 06:40:07PM +0000, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> 
> For situations where sysadmins might want to allow different level of
> of access control for different PMUs, we start creating per-PMU
> perf_event_paranoid controls in sysfs.

You've completely and utterly failed to explain why.