linux-kernel - Re: [V6 01/11] perf: Add PERF_SAMPLE_BRANCH

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Message-ID: <20140521113025.GC2485@laptop.programming.kicks-ass.net>
Date:	Wed, 21 May 2014 13:30:25 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, mpe@...erman.id.au,
	benh@...nel.crashing.org
Subject: Re: [V6 01/11] perf: Add PERF_SAMPLE_BRANCH_COND

On Wed, May 21, 2014 at 03:29:46PM +0530, Anshuman Khandual wrote:
> This patch introduces new branch filter PERF_SAMPLE_BRANCH_COND which
> will extend the existing perf ABI. Various architectures can provide
> this functionality with either with HW filtering support (if present)
> or with SW filtering of captured branch instructions.

The Changelog fails to mention what _this_ functionality is.

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