linux-kernel - Re: [PATCH 11/19] perf ftrace: Add 'report' sub-command

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Message-ID: <8738rly0t7.fsf@sejong.aot.lge.com>
Date:	Thu, 11 Jul 2013 17:10:12 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 11/19] perf ftrace: Add 'report' sub-command

On Wed, 10 Jul 2013 16:45:39 +0200, Jiri Olsa wrote:
> On Wed, Jun 26, 2013 at 04:14:14PM +0900, Namhyung Kim wrote:
>
> SNIP
>
>>  
>> +static int
>> +__cmd_ftrace_report(struct perf_ftrace *ftrace, int argc, const char **argv)
>> +{
>> +	int ret = -1;
>> +	const char * const report_usage[] = {
>> +		"perf ftrace report [<options>]",
>> +		NULL
>> +	};
>> +	const struct option report_options[] = {
>> +	OPT_STRING('i', "input", &ftrace->dirname, "dirname",
>> +		   "input directory name to use (default: perf.data)"),
>> +	OPT_INCR('v', "verbose", &verbose,
>> +		 "be more verbose"),
>> +	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
>> +		    "dump raw trace in ASCII"),
>
> not sure dump_trace is useful here, it's just the first cpu-x samples
> and then following 2 lines repeated MANY times:
>
>  ... thread: ls:30064
>  ...... dso: [kernel.kallsyms]
>
> I guess you need this to verify first SAMPLEs?

I can't remember why exactly. ;-)

Probably I was thinking about adding more info like raw ftrace data.

Thanks,
Namhyung
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