linux-kernel - Re: [PATCH 1/2] tracing: make tracer_flags use the right set

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Date:	Tue, 8 Mar 2016 21:51:29 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Chunyu Hu <chuhu@...hat.com>
Cc:	kbuild-all@...org, rostedt@...dmis.org, liwan@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] tracing: make tracer_flags use the right set_flag
 callback

Hi Chunyu,

[auto build test ERROR on tip/perf/core]
[also build test ERROR on v4.5-rc7 next-20160308]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Chunyu-Hu/tracing-make-tracer_flags-use-the-right-set_flag-callback/20160308-214136
config: i386-randconfig-x000-201610 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/trace/trace.c: In function 'create_trace_option_files':
>> kernel/trace/trace.c:6403:7: error: 'i' undeclared (first use in this function)
     for (i = 0; i < tr->nr_topts; i++) {
          ^
   kernel/trace/trace.c:6403:7: note: each undeclared identifier is reported only once for each function it appears in

vim +/i +6403 kernel/trace/trace.c

37aea98b Steven Rostedt (Red Hat  2015-09-30  6397) 	 * If this is an instance, only create flags for tracers
37aea98b Steven Rostedt (Red Hat  2015-09-30  6398) 	 * the instance may have.
37aea98b Steven Rostedt (Red Hat  2015-09-30  6399) 	 */
37aea98b Steven Rostedt (Red Hat  2015-09-30  6400) 	if (!trace_ok_for_array(tracer, tr))
37aea98b Steven Rostedt (Red Hat  2015-09-30  6401) 		return;
37aea98b Steven Rostedt (Red Hat  2015-09-30  6402) 
37aea98b Steven Rostedt (Red Hat  2015-09-30 @6403) 	for (i = 0; i < tr->nr_topts; i++) {
37aea98b Steven Rostedt (Red Hat  2015-09-30  6404) 		/*
37aea98b Steven Rostedt (Red Hat  2015-09-30  6405) 		 * Check if these flags have already been added.
37aea98b Steven Rostedt (Red Hat  2015-09-30  6406) 		 * Some tracers share flags.

:::::: The code at line 6403 was first introduced by commit
:::::: 37aea98b84c0ce2ac638510fefeed9f8f920bd34 tracing: Add trace options for tracer options to instances

:::::: TO: Steven Rostedt (Red Hat) <rostedt@...dmis.org>
:::::: CC: Steven Rostedt <rostedt@...dmis.org>

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Download attachment ".config.gz" of type "application/octet-stream" (23390 bytes)