linux-kernel - Re: [PATCH v3 1/5] perf util: Cleanup and refactor block info functions

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Date:   Wed, 23 Oct 2019 13:37:03 +0200
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 v3 1/5] perf util: Cleanup and refactor block info
 functions

On Tue, Oct 22, 2019 at 04:07:06PM +0800, Jin Yao wrote:

SNIP

>  
> -static int filter_cb(struct hist_entry *he, void *arg __maybe_unused)
> -{
> -	/* Skip the calculation of column length in output_resort */
> -	he->filtered = true;
> -	return 0;
> -}

please move this change into separate patch and explain in changelog
why this is necessary

thanks,
jirka

> -
>  static void hists__precompute(struct hists *hists)
>  {
>  	struct rb_root_cached *root;
> @@ -792,8 +695,11 @@ static void hists__precompute(struct hists *hists)
>  		he   = rb_entry(next, struct hist_entry, rb_node_in);
>  		next = rb_next(&he->rb_node_in);
>  
> -		if (compute == COMPUTE_CYCLES)
> -			process_block_per_sym(he);
> +		if (compute == COMPUTE_CYCLES) {
> +			bh = container_of(he, struct block_hist, he);
> +			init_block_hist(bh);
> +			block_info__process_sym(he, bh, NULL, 0);
> +		}
>  
>  		data__for_each_file_new(i, d) {
>  			pair = get_pair_data(he, d);
> @@ -812,16 +718,18 @@ static void hists__precompute(struct hists *hists)
>  				compute_wdiff(he, pair);
>  				break;
>  			case COMPUTE_CYCLES:
> -				process_block_per_sym(pair);
> -				bh = container_of(he, struct block_hist, he);
>  				pair_bh = container_of(pair, struct block_hist,
>  						       he);
> +				init_block_hist(pair_bh);
> +				block_info__process_sym(pair, pair_bh, NULL, 0);
> +
> +				bh = container_of(he, struct block_hist, he);
>  
>  				if (bh->valid && pair_bh->valid) {
>  					block_hists_match(&bh->block_hists,
>  							  &pair_bh->block_hists);
> -					hists__output_resort_cb(&pair_bh->block_hists,
> -								NULL, filter_cb);
> +					hists__output_resort(&pair_bh->block_hists,
> +							     NULL);
>  				}
>  				break;
>  			default:

SNIP

> diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
> index 679a1d75090c..a7fa061987e4 100644
> --- a/tools/perf/util/hist.c
> +++ b/tools/perf/util/hist.c
> @@ -18,6 +18,7 @@
>  #include "srcline.h"
>  #include "symbol.h"
>  #include "thread.h"
> +#include "block-info.h"
>  #include "ui/progress.h"
>  #include <errno.h>
>  #include <math.h>
> @@ -80,6 +81,8 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
>  	int symlen;
>  	u16 len;
>  
> +	if (h->block_info)
> +		return;
>  	/*
>  	 * +4 accounts for '[x] ' priv level info
>  	 * +2 accounts for 0x prefix on raw addresses

SNIP