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Date: Wed, 10 Oct 2012 16:38:35 +0200
From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
To: Jiri Olsa <jolsa@...hat.com>
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, 2012-10-10 at 16:25 +0200, Jiri Olsa wrote:
> 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?
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?
No thats fine, just something we shouldn't forget about. They're in Andi
Kleen's HSW patches, I need to go over the v2 of that.
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