linux-kernel - Re: [PATCH] [RFC] perf: robustify proc and debugfs file recording

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Date:	Wed, 13 Jul 2011 20:39:41 +1000
From:	Michael Neuling <mikey@...ling.org>
To:	Sonny Rao <sonnyrao@...omium.org>
cc:	acme@...hat.com, anton@...ba.org, rostedt@...dmis.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [RFC] perf: robustify proc and debugfs file recording

Sonny,


> While attempting to create a timechart of boot up I found
> perf didn't tolerate modules being loaded/unloaded.  This patch
> fixes this by reading the file once and then writing the size
> read at the correct point in the file.  It also simplifies the
> code somewhat.

I'm getting a bunch of unused variables warnings when I compile this.
Care to clean them up?

    CC util/trace-event-info.o
util/trace-event-info.c: In function ‘read_header_files’:
util/trace-event-info.c:221:27: error: unused variable ‘check_size’ [-Werror=unused-variable]
util/trace-event-info.c:221:21: error: unused variable ‘size’ [-Werror=unused-variable]
util/trace-event-info.c: In function ‘copy_event_system’:
util/trace-event-info.c:255:27: error: unused variable ‘check_size’ [-Werror=unused-variable]
util/trace-event-info.c:255:21: error: unused variable ‘size’ [-Werror=unused-variable]
util/trace-event-info.c: In function ‘read_proc_kallsyms’:
util/trace-event-info.c:377:21: error: unused variable ‘check_size’ [-Werror=unused-variable]
util/trace-event-info.c: In function ‘read_ftrace_printk’:
util/trace-event-info.c:394:21: error: unused variable ‘check_size’ [-Werror=unused-variable]
cc1: all warnings being treated as errors

Mikey
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