linux-kernel - Re: [tip:perf/core] perf/x86/intel: Use Intel family macros for core perf events

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Date:	Wed, 8 Jun 2016 22:48:01 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Vince Weaver <vincent.weaver@...ne.edu>
Cc:	Ingo Molnar <mingo@...nel.org>, tglx@...utronix.de,
	brgerst@...il.com, dave@...1.net, kan.liang@...el.com,
	torvalds@...ux-foundation.org, acme@...hat.com,
	alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
	linux-kernel@...r.kernel.org, eranian@...gle.com,
	peterz@...radead.org, dvlasenk@...hat.com, hpa@...or.com,
	dave.hansen@...ux.intel.com, luto@...capital.net,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perf/core] perf/x86/intel: Use Intel family macros for core
 perf events

On Wed, Jun 08, 2016 at 04:15:25PM -0400, Vince Weaver wrote:
> It's also unclear what internal names matter.  For example is AMD 15h/60h
> "Carrizo" or "Excavator" or both?

Excavator is the core and Carrizo is the APU. I think of it as the
client part.

But this is exactly the problem: what name do we take? Also, sometimes
the core name is important (ISA supported) and sometimes the platform.
It depends on the feature.

Maybe a text file with more free formulations would be better.

...

> (why we need two different interfaces for RAPL is another thing, not
> to mention the fact that powercap you can read the values as a normal
> user but with perf you need to be root to read the exact same thing).

Sounds like it needs some cleaning ...

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.