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 10:47:29 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jin Yao <yao.jin@...ux.intel.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 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