linux-kernel - Re: [PATCH] perf: fix wrong hw

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Date:	Wed, 27 Jun 2012 17:59:34 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jovi Zhang <bookjovi@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	mingo@...hat.com, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf: fix wrong hw_breakpoint documentation

Hi, Jovi

On Wed, 27 Jun 2012 16:39:19 +0800, Jovi Zhang wrote:
> From f5f9c3a064482cf3d0fb7ed788c66630bddbfc79 Mon Sep 17 00:00:00 2001
> From: Jovi Zhang <bookjovi@...il.com>
> Date: Wed, 27 Jun 2012 16:09:21 +0800
> Subject: [PATCH] perf: fix wrong hw_breakpoint documentation
>
> read-write access hw_breakpoint event is passed as 'mem:addr',
> 'mem:0x1000:rw' is parsed as invalid argument currently.
>

It should be a bug in event parser. I guess the patch below will fix it:


diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 488362e14133..aafca33a8a09 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -76,7 +76,7 @@ num_hex               0x[a-fA-F0-9]+
 num_raw_hex    [a-fA-F0-9]+
 name           [a-zA-Z_*?][a-zA-Z0-9_*?]*
 modifier_event [ukhpGH]{1,8}
-modifier_bp    [rwx]
+modifier_bp    [rwx]+
 
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