linux-kernel - Re: [PATCH 4/8] perf x86: Adding hardware events translations for amd cpus

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Date:	Wed, 10 Oct 2012 16:25:14 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 4/8] perf x86: Adding hardware events translations for
 amd cpus

On Wed, Oct 10, 2012 at 04:11:42PM +0200, Peter Zijlstra wrote:
> On Wed, 2012-10-10 at 14:53 +0200, Jiri Olsa wrote:
> > +static ssize_t amd_event_sysfs_show(char *page, u64 config)
> > +{
> > +       u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT) |
> > +                   (config & AMD64_EVENTSEL_EVENT) >> 24;
> > +
> > +       return x86_event_sysfs_show(page, config, event);
> > +} 
> 
> You'll need to filter out 0xF<<32 bits before passing them on in
> @config, Intel has a different meaning for them.

Right, that would be those 'intx and intx_cp' bits we discussed, right?

My thinking was to customize this once those bits are introduced and
part of the format stuff. Until that time the x86_event_sysfs_show
function shows proper data for both amd and intel. Or is it already
on its way in?

jirka
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