linux-kernel - Re: [PATCH v2 2/2] perf tools: add attr->mmap2 support

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Date:	Thu, 22 Aug 2013 12:51:09 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, ak@...ux.intel.com,
	acme@...hat.com, jolsa@...hat.com, namhyung.kim@....com,
	dsahern@...il.com
Subject: Re: [PATCH v2 2/2] perf tools: add attr->mmap2 support

On Wed, Aug 21, 2013 at 12:10:25PM +0200, Stephane Eranian wrote:
> This patch adds support for the new PERF_RECORD_MMAP2
> record type exposed by the kernel. This is an extended
> PERF_RECORD_MMAP record. It adds for each file-backed
> mapping the device major, minor number and the inode
> number and generation. This triplet uniquely identifies
> the source of a file-backed mapping. It can be used to
> detect identical virtual mappings between processes, for
> instance.
> 
> The patch will prefer MMAP2 over MMAP.
> 
> Signed-off-by: Stephane Eranian <eranian@...gle.com>

Acme, ACK?
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