linux-kernel - Re: [PATCH v5 12/20] x86: perf: intel

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Message-ID: <20141024115131.GY21513@worktop.programming.kicks-ass.net>
Date:	Fri, 24 Oct 2014 13:51:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
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, acme@...radead.org
Subject: Re: [PATCH v5 12/20] x86: perf: intel_pt: Intel PT PMU driver

On Fri, Oct 24, 2014 at 11:22:20AM +0300, Alexander Shishkin wrote:
> > The fact that the hardware cannot even tell you the supported mask is
> > further fail.

> The problem with this is that some bits go in groups, there'd be 2..3..4
> bit fields encoding desired packet frequency, for example.

OK, so put the magic number in the big model array.
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