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From: Thomas Gleixner <tglx@linutronix.de>
To: Borislav Petkov <bp@alien8.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Ingo Molnar <mingo@redhat.com>,
	linux-kernel@vger.kernel.org, vince@deater.net,
	eranian@google.com, Arnaldo Carvalho de Melo <acme@infradead.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>
Subject: Re: [PATCH v1 2/5] perf/x86/intel/pt: IP filtering register/cpuid bits
Date: Fri, 22 Apr 2016 09:58:31 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1604220954260.3941@nanos> (raw)
In-Reply-To: <20160421203752.GL28821@pd.tnic>

On Thu, 21 Apr 2016, Borislav Petkov wrote:

> On Thu, Apr 21, 2016 at 08:55:38PM +0200, Thomas Gleixner wrote:
> > I have to disagree here. The MSRs itself can really go into msr-index.h while
> > the bit definitions might go elsewhere. What's wrong with having all MSRs at a
> > central place?
> 
> Same reason as for pci_ids.h - to contain only MSRs which are used in
> multiple compilation units.

That's really not the same thing. pci ids are issued by a gazillion of vendors
for a bazillion of different devices. There is no consistent view for them.

MSRs on the other hand are x86 specific registers nicely defined in the
SDM/APM and having at least the MSR defines in a single header makes a lot of
sense.

Thanks,

	tglx

  reply	other threads:[~2016-04-22  8:00 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-21 15:16 [PATCH v1 0/5] perf: Introduce address range filtering Alexander Shishkin
2016-04-21 15:16 ` [PATCH v1 1/5] perf: Move set_filter() from behind EVENT_TRACING Alexander Shishkin
2016-04-21 15:17 ` [PATCH v1 2/5] perf/x86/intel/pt: IP filtering register/cpuid bits Alexander Shishkin
2016-04-21 17:48   ` Borislav Petkov
2016-04-21 18:55     ` Thomas Gleixner
2016-04-21 19:17       ` Peter Zijlstra
2016-04-21 20:39         ` Borislav Petkov
2016-04-21 20:37       ` Borislav Petkov
2016-04-22  7:58         ` Thomas Gleixner [this message]
2016-04-22  9:34           ` Borislav Petkov
2016-04-21 15:17 ` [PATCH v1 3/5] perf: Extend perf_event_aux_ctx() to optionally iterate through more events Alexander Shishkin
2016-04-21 15:17 ` [PATCH v1 4/5] perf: Introduce address range filtering Alexander Shishkin
2016-04-22  7:45   ` Peter Zijlstra
2016-04-22 16:19     ` Alexander Shishkin
2016-04-25 12:57       ` Peter Zijlstra
2016-04-25 15:41         ` Alexander Shishkin
2016-04-25 13:10       ` Peter Zijlstra
2016-04-25 13:36         ` Peter Zijlstra
2016-04-25 16:02         ` Alexander Shishkin
2016-04-25 13:19       ` Peter Zijlstra
2016-04-25 16:03         ` Alexander Shishkin
2016-04-25 14:14       ` Peter Zijlstra
2016-04-25 16:07         ` Alexander Shishkin
2016-04-25 14:25       ` Peter Zijlstra
2016-04-25 16:14         ` Alexander Shishkin
2016-04-26 14:35         ` Alexander Shishkin
2016-04-21 15:17 ` [PATCH v1 5/5] perf/x86/intel/pt: Add support for address range filtering in PT Alexander Shishkin

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