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Subject: Re: [RFC][PATCH 2/9] perf: core, remove hw_perf_event_init
From: Peter Zijlstra <peterz@infradead.org>
To: Lin Ming <ming.m.lin@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>, Ingo Molnar <mingo@elte.hu>,
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Date: Tue, 11 May 2010 11:18:37 +0200
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On Tue, 2010-05-11 at 14:44 +0800, Lin Ming wrote:
> On Tue, 2010-05-11 at 14:38 +0800, Peter Zijlstra wrote:
> > On Tue, 2010-05-11 at 01:09 +0200, Frederic Weisbecker wrote:
> > 
> > > Which module do you have in mind that could register a pmu?
> > > And I don't understand the problem with pci-hotplug.
> > 
> > Well, the DRM drivers for one, but basically the trend is for every
> > aspect of the machine to include PMUs of some form, this includes bus
> > bridges and fancy devices.
> 
> So the concept of "PMU" is really broadened here?
> Not just only the performance monitoring hardware in CPU?

Arguably the uncore unit is already outside of what we traditionally
call a CPU ;-)

But yeah, PMUs are found in lots of things these days.