linux-kernel - Re: [PATCH 23/28] perf tools: Factor out hist_entry

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Date:	Mon, 13 Jan 2014 17:49:01 +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>,
	Arun Sharma <asharma@...com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Rodrigo Campos <rodrigo@...g.com.ar>
Subject: Re: [PATCH 23/28] perf tools: Factor out hist_entry_iter code

On Sat, 11 Jan 2014 17:24:08 +0100, Jiri Olsa wrote:
> On Wed, Jan 08, 2014 at 05:46:28PM +0900, Namhyung Kim wrote:
>> Now the hist_entry_iter code will be shared with perf top code base.
>> So move it to util/hist.c and do some necessary cleanups and renames.
>
> factoring code from this very patchset.. looks like it could be easily
> squashed with:
>   perf tools: Introduce struct hist_entry_iter

OK, I'll squash it.  It was a result of extending it to support perf top
but yes, it'd be better if it's in the separate code from the beginning.


[SNIP]
>> @@ -555,23 +103,19 @@ static int process_sample_event(struct perf_tool *tool,
>>  		return 0;
>>  
>>  	if (sort__mode == SORT_MODE__BRANCH)
>> -		iter = &branch_iter;
>> +		iter = &hist_iter_branch;
>>  	else if (rep->mem_mode == 1)
>> -		iter = &mem_iter;
>> +		iter = &hist_iter_mem;
>>  	else if (symbol_conf.cumulate_callchain)
>> -		iter = &cumulative_iter;
>> +		iter = &hist_iter_cumulative;
>>  	else
>> -		iter = &normal_iter;
>> +		iter = &hist_iter_normal;
>
> looks like we could add 'struct hist_entry_iter_ops' and ops
> pointer in 'struct hist_entry_iter' ...just feel better ;-)

Yes, it looks better - I'll change it too.

Thanks for your review!
Namhyung
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