linux-kernel - Re: [PATCH 8/8] perf tools: Get current comm instead of last one

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Message-ID: <87wqlole3i.fsf@sejong.aot.lge.com>
Date:	Tue, 08 Oct 2013 10:56:49 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Frederic Weisbecker <fweisbec@...il.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>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 8/8] perf tools: Get current comm instead of last one

Hi Frederic,

On Wed, 2 Oct 2013 12:01:51 +0200, Frederic Weisbecker wrote:
> On Thu, Sep 26, 2013 at 05:58:10PM +0900, Namhyung Kim wrote:
>> From: Namhyung Kim <namhyung.kim@....com>
>> 
>> At insert time, a hist entry should reference comm at the time
>> otherwise it'll get the last comm anyway.

[SNIP]

>> --- a/tools/perf/util/comm.h
>> +++ b/tools/perf/util/comm.h
>> @@ -16,5 +16,6 @@ struct comm {
>>  void comm__free(struct comm *comm);
>>  struct comm *comm__new(const char *str, u64 timestamp);
>>  const char *comm__str(const struct comm *comm);
>> +void comm__override(struct comm *self, const char *str, u64 timestamp);
>>  
>>  #endif  /* __PERF_COMM_H */
>> diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
>> index a2d58e7abdcf..1aa97b012a09 100644
>> --- a/tools/perf/util/hist.c
>> +++ b/tools/perf/util/hist.c
>> @@ -412,6 +412,7 @@ struct hist_entry *__hists__add_mem_entry(struct hists *self,
>>  {
>>  	struct hist_entry entry = {
>>  		.thread	= al->thread,
>> +		.comm = curr_comm(al->thread),
>
> So now that we have an accessor for that, it clashes a bit with existing names.
>
> I suggest we rename thread__comm_curr() -> thread__comm_str()
> And rename curr_comm() -> thread__comm()
>
> Hmm?

Okay, I'll rename and resend.

Thanks,
Namhyung
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