linux-kernel - Re: [PATCH 04/12] perf, x86: Support the TSX intx/intx

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Message-ID: <20130126115402.GA13445@gmail.com>
Date:	Sat, 26 Jan 2013 12:54:02 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl,
	akpm@...ux-foundation.org, acme@...hat.com, eranian@...gle.com,
	jolsa@...hat.com, namhyung@...nel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 04/12] perf, x86: Support the TSX intx/intx_cp qualifiers
 v2


* Andi Kleen <andi@...stfloor.org> wrote:

> From: Andi Kleen <ak@...ux.intel.com>
> 
> Implement the TSX transaction and checkpointed transaction 
> qualifiers for Haswell. This allows e.g. to profile the number 
> of cycles in transactions.

The changelog should explain why this is a basic feature that is 
a must-have to have basic perf support. (i.e. default 'perf 
record', 'perf report', 'perf stat' and 'perf top' works and is 
meaningful.)

Thanks,

	Ingo
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