linux-kernel - Re: [PATCH v4 3/4] perf util: Flexible to set block info output formats

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Date:   Mon, 20 Jan 2020 22:50:44 +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 v4 3/4] perf util: Flexible to set block info output
 formats



On 1/20/2020 5:47 PM, Jiri Olsa wrote:
> On Thu, Jan 16, 2020 at 03:29:03AM +0800, Jin Yao wrote:
> 
> SNIP
> 
>>   }
>>   
>> +void block_info__free_report(struct block_report *reps, int nr_reps)
>> +{
>> +	for (int i = 0; i < nr_reps; i++)
>> +		hists__delete_entries(&reps[i].hist.block_hists);
>> +
>> +	free(reps);
>> +}
>> +
>>   int report__browse_block_hists(struct block_hist *bh, float min_percent,
>>   			       struct evsel *evsel, struct perf_env *env,
>> -			       struct annotation_options *annotation_opts)
>> +			       struct annotation_options *annotation_opts,
>> +			       bool release)
>>   {
>>   	int ret;
>>   
>> @@ -451,13 +473,17 @@ int report__browse_block_hists(struct block_hist *bh, float min_percent,
>>   		symbol_conf.report_individual_block = true;
>>   		hists__fprintf(&bh->block_hists, true, 0, 0, min_percent,
>>   			       stdout, true);
>> -		hists__delete_entries(&bh->block_hists);
>> +		if (release)
>> +			hists__delete_entries(&bh->block_hists);
>> +
>>   		return 0;
>>   	case 1:
>>   		symbol_conf.report_individual_block = true;
>>   		ret = block_hists_tui_browse(bh, evsel, min_percent,
>>   					     env, annotation_opts);
>> -		hists__delete_entries(&bh->block_hists);
>> +		if (release)
>> +			hists__delete_entries(&bh->block_hists);
>> +
>>   		return ret;
> 
> I don't understand this change.. why do you relase it in here?
> there's release call in block_info__free_report you just added...
> 
> jirka
> 

Yes, I have released the hists entries in block_info__free_report(). I 
don't need to keep the release code here. Thanks so much for pointing 
this out.

Thanks
Jin Yao