linux-kernel - Re: [PATCH] perf report: Fix sort__sym

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Message-ID: <20150619211431.GC28405@kernel.org>
Date:	Fri, 19 Jun 2015 18:14:31 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Yannick Brosseau <scientist@...com>
Cc:	Jeff Epler <jepler@...ythonic.net>, mingo@...hat.com,
	paulus@...ba.org, a.p.zijlstra@...llo.nl, jolsa@...nel.org,
	ak@...ux.intel.com, linux-kernel@...r.kernel.org,
	kernel-team@...com
Subject: Re: [PATCH] perf report: Fix sort__sym_cmp to also compare end of
 symbol

Em Wed, Jun 17, 2015 at 04:55:58PM -0700, Yannick Brosseau escreveu:
> On 06/17/2015 04:53 PM, Jeff Epler wrote:
> > On Wed, Jun 17, 2015 at 04:41:10PM -0700, Yannick Brosseau wrote:
> >> When using a map file from a JIT, due to memory reuse, we can
> >> obtain multiple symbols with the same start address but a different
> >> length.
> > Is there some reason it's impossible for the reused memory to have the
> > same length / end address?
> >
> It's possible that they are the same, and in that case the function
> returns 0.
> The patch is adding the handling of the case where they are different.

Looks sensible, applied.

- Arnaldo
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