linux-kernel - Re: [PATCH 2/3] perf stat: Don't require a workload when using system wide or CPU options

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Date:	Mon, 30 Sep 2013 07:40:12 -0600
From:	David Ahern <dsahern@...il.com>
To:	Namhyung Kim <namhyung@...nel.org>
CC:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung.kim@....com>,
	Stephane Eranian <eranian@...gle.com>,
	"David (me)" <dsahern@...il.com>
Subject: Re: [PATCH 2/3] perf stat: Don't require a workload when using system
 wide or CPU options

On 9/30/13 2:47 AM, Namhyung Kim wrote:
>> @@ -1517,8 +1517,10 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
>>   	} else if (big_num_opt == 0) /* User passed --no-big-num */
>>   		big_num = false;
>>
>> -	if (!argc && !perf_target__has_task(&target))
>> +	if (!argc && !perf_target__has_task(&target) &&
>> +	    !perf_target__has_cpu(&target))
>
> You can use perf_target__none() for this.

Indeed. Updated patch attached.

David


View attachment "0002-perf-stat-Don-t-require-a-workload-when-using-system.patch" of type "text/plain" (1386 bytes)