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 10:47:37 +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

> +			       block_hpps, nr_hpps);
>  
> -	perf_hpp_list__register_sort_field(&bh->block_list,
> -		&block_fmts[PERF_HPP_REPORT__BLOCK_TOTAL_CYCLES_PCT].fmt);
> +	/* Sort by the first fmt */
> +	perf_hpp_list__register_sort_field(&bh->block_list, &block_fmts[0].fmt);
>  }
>  
> -static void process_block_report(struct hists *hists,
> -				 struct block_report *block_report,
> -				 u64 total_cycles)
> +static int process_block_report(struct hists *hists,
> +				struct block_report *block_report,
> +				u64 total_cycles, int *block_hpps,
> +				int nr_hpps)
>  {
>  	struct rb_node *next = rb_first_cached(&hists->entries);
>  	struct block_hist *bh = &block_report->hist;
>  	struct hist_entry *he;
>  
> -	init_block_hist(bh, block_report->fmts);
> +	if (nr_hpps > PERF_HPP_REPORT__BLOCK_MAX_INDEX)

hum, should be '>=' above.. ?

jirka