linux-kernel - Re: [PATCH RESEND v2] bus: ARM CCN PMU driver

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Date:	Thu, 24 Jul 2014 15:45:41 +0100
From:	Pawel Moll <pawel.moll@....com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	linux-kernel@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>, arm@...nel.org,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Kumar Gala <galak@...eaurora.org>,
	Olof Johansson <olof@...om.net>, Jiri Olsa <jolsa@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RESEND v2] bus: ARM CCN PMU driver

On Wed, 2014-07-23 at 23:29 +0200, Arnd Bergmann wrote:
> On Wednesday 23 July 2014 22:23:38 Arnd Bergmann wrote:
> > On Tuesday 22 July 2014, Pawel Moll wrote:
> > > Driver providing perf backend for ARM Cache Coherent Network
> > > interconnect. Supports counting all hardware events and crosspoint
> > > watchpoints.
> > > 
> > > Currently works with CCN-504 only, although there should be
> > > no changes required for CCN-508 (just impossible to test it now).
> > > 
> > > Signed-off-by: Pawel Moll <pawel.moll@....com>
> > 
> > Applied to next/drivers, thanks!
> 
> I'm getting build errors with CONFIG_PERF_EVENTS disabled. 
> Is the patch below the right answer, or should we still load
> the driver and #ifdef the perf-events code?
> 
> It seems to me that the driver doesn't do anything besides
> perf events, but I could be missing something.

No, you're right. At the moment this is only a PMU driver, and I don't
expect this would change any time soon, so your change will do the job,
thanks!

Pawel

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