linux-kernel - Re: [PATCH v2 07/10] perf stat: Allocate shadow stats buffer for threads

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Date:   Tue, 28 Nov 2017 20:23:14 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v2 07/10] perf stat: Allocate shadow stats buffer for
 threads



On 11/28/2017 7:12 PM, Jiri Olsa wrote:
> On Mon, Nov 27, 2017 at 10:07:27PM +0800, Jin Yao wrote:
>> After perf_evlist__create_maps() being executed, we can get all
>> threads from /proc. And via thread_map__nr(), we can also get
>> the number of threads.
>>
>> With the number of threads, the patch allocates a buffer which
>> will record the shadow stats for these threads.
>>
>> The buffer pointer is saved in stat_config.
> 
> why don't you add struct perf_stat_config::*stats|stats_num in this patch?
> I dont see any reason it's introduced earlier
> 
> jirka
> 

OK, let me check it.

Thanks
Jin Yao