linux-kernel - Re: [tip:perf/core] perf/x86/rapl: Add Skylake server model detection

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Message-ID: <20160610053547.731ea62d@yairi>
Date:	Fri, 10 Jun 2016 05:35:47 -0700
From:	Jacob Pan <jacob.jun.pan@...ux.intel.com>
To:	Vince Weaver <vincent.weaver@...ne.edu>
Cc:	hpa@...or.com, dave.hansen@...ux.intel.com, mingo@...nel.org,
	linux-kernel@...r.kernel.org, acme@...hat.com,
	peterz@...radead.org, jolsa@...hat.com, eranian@...gle.com,
	tglx@...utronix.de, luto@...capital.net, brgerst@...il.com,
	alexander.shishkin@...ux.intel.com, bp@...en8.de,
	torvalds@...ux-foundation.org, dave@...1.net, dvlasenk@...hat.com,
	linux-tip-commits@...r.kernel.org, jacob.jun.pan@...ux.intel.com
Subject: Re: [tip:perf/core] perf/x86/rapl: Add Skylake server model
 detection

On Wed, 8 Jun 2016 10:12:58 -0400 (EDT)
Vince Weaver <vincent.weaver@...ne.edu> wrote:

> On Wed, 8 Jun 2016, tip-bot for Jacob Pan wrote:
> 
> > Commit-ID:  348c5ac6c7dc117e1de095bf07c86c31101d56f3
> > Gitweb:
> > http://git.kernel.org/tip/348c5ac6c7dc117e1de095bf07c86c31101d56f3
> > Author:     Jacob Pan <jacob.jun.pan@...ux.intel.com> AuthorDate:
> > Thu, 2 Jun 2016 17:19:53 -0700 Committer:  Ingo Molnar
> > <mingo@...nel.org> CommitDate: Wed, 8 Jun 2016 12:06:01 +0200
> > 
> > perf/x86/rapl: Add Skylake server model detection
> > 
> > SKX uses similar RAPL interface as Broadwell server.
> 
> ...
> 
> >  	X86_RAPL_MODEL_MATCH(INTEL_FAM6_SKYLAKE_MOBILE,
> > skl_rapl_init), X86_RAPL_MODEL_MATCH(INTEL_FAM6_SKYLAKE_DESKTOP,
> > skl_rapl_init),
> > +	X86_RAPL_MODEL_MATCH(INTEL_FAM6_SKYLAKE_X,
> > hsx_rapl_init),
> 
> 
> code does not match git commit message.  The code says that skylake
> server matches the haswell server.  (Yes I know broadwell server
> apparently matches haswell server too, but you might want to say that
> in the git commit to avoid confusion).
> 
Yes, it would be more clear to state that SKX matches BDX as well as
HSX. I was following the order of product releases. Should I submit a
patch for it? or can the commit message be changed by the maintainers?

New commit message:

"Skylake server (SKX) uses similar RAPL interface as Haswell server
which is used on Broadwell server as well."


Thanks for pointing it out.


Jacob