linux-kernel - Re: [tip:perf/core] perf probe: Don't always consider EOF as an error when listing source code

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Date:	Wed, 22 Dec 2010 17:37:13 +0100
From:	Franck Bui-Huu <vagabon.xyz@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	masami.hiramatsu.pt@...achi.com, tglx@...utronix.de
Subject: Re: [tip:perf/core] perf probe: Don't always consider EOF as an error when listing source code

Arnaldo Carvalho de Melo <acme@...radead.org> writes:

> Em Wed, Dec 22, 2010 at 02:14:43PM +0100, Franck Bui-Huu escreveu:
>> tip-bot for Franck Bui-Huu <fbuihuu@...il.com> writes:
>> >  error:
>> > -	if (feof(fp))
>
>> > +	if (ferror(fp)) {
>> >  		pr_warning("Source file is shorter than expected.\n");
>> > -	else
>> > -		pr_warning("File read error: %s\n", strerror(errno));
>> > +		return -1;
>> 
>> Argh, something wrong here.
>> 
>> The warning left here, is the wrong one, I should have left the other
>> one.
>> 
>> Sorry for the mistake.
>> 
>> Should I send a patch to fix that ?
>
> Please.
>

[PATCH] perf-probe: Fix wrong warning in __show_one_line() if read(1) errors happen

From: Franck Bui-Huu <fbuihuu@...il.com>

This was introduced by commit fde52dbd7f71934aba4e150f3d1d51e826a08850.

Signed-off-by: Franck Bui-Huu <fbuihuu@...il.com>
---
 tools/perf/util/probe-event.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 469ad35..10ad1ad 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -319,7 +319,7 @@ static int __show_one_line(FILE *fp, int l, bool skip, bool show_num)
 	return 1;
 error:
 	if (ferror(fp)) {
-		pr_warning("Source file is shorter than expected.\n");
+		pr_warning("File read error: %s\n", strerror(errno));
 		return -1;
 	}
 	return 0;
-- 
1.7.3.2



-- 
		Franck
--
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