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

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Date:   Wed, 23 Oct 2019 20:47:38 +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 v3 1/5] perf util: Cleanup and refactor block info
 functions



On 10/23/2019 7:37 PM, Jiri Olsa wrote:
> 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
> 

Got it. I will move this change into a separate patch.

Thanks
Jin Yao

>> -
>>   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
>