linux-kernel - Re: [PATCH v5] perf diff: Report noisy for cycles diff

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Date:   Tue, 20 Aug 2019 19:59:52 +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 v5] perf diff: Report noisy for cycles diff



On 8/20/2019 4:34 PM, Jiri Olsa wrote:
> On Fri, Aug 16, 2019 at 10:13:43AM +0800, Jin Yao wrote:
> 
> SNIP
> 
>>   static void
>>   hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
>>   {
>> @@ -1662,6 +1794,10 @@ static void data__hpp_register(struct data__file *d, int idx)
>>   		fmt->color = hpp__color_cycles;
>>   		fmt->sort  = hist_entry__cmp_nop;
>>   		break;
>> +	case PERF_HPP_DIFF__CYCLES_HIST:
>> +		fmt->color = hpp__color_cycles_hist;
>> +		fmt->sort  = hist_entry__cmp_nop;
>> +		break;
>>   	default:
>>   		fmt->sort  = hist_entry__cmp_nop;
>>   		break;
>> @@ -1688,8 +1824,13 @@ static int ui_init(void)
>>   		 *   PERF_HPP_DIFF__RATIO
>>   		 *   PERF_HPP_DIFF__WEIGHTED_DIFF
>>   		 */
>> -		data__hpp_register(d, i ? compute_2_hpp[compute] :
>> -					  PERF_HPP_DIFF__BASELINE);
>> +		if (cycles_hist && i && (compute == COMPUTE_CYCLES)) {
>> +			data__hpp_register(d, PERF_HPP_DIFF__CYCLES);
>> +			data__hpp_register(d, PERF_HPP_DIFF__CYCLES_HIST);
>> +		} else {
>> +			data__hpp_register(d, i ? compute_2_hpp[compute] :
>> +						  PERF_HPP_DIFF__BASELINE);
>> +		}
> 
> 
> hum, why can't it be just like we treat other extra columns:
> 
> ---
> @@ -1687,6 +1823,7 @@ static int ui_init(void)
>   		 *   PERF_HPP_DIFF__DELTA
>   		 *   PERF_HPP_DIFF__RATIO
>   		 *   PERF_HPP_DIFF__WEIGHTED_DIFF
> +		 *   PERF_HPP_DIFF__CYCLES
>   		 */
>   		data__hpp_register(d, i ? compute_2_hpp[compute] :
>   					  PERF_HPP_DIFF__BASELINE);
> @@ -1704,6 +1841,9 @@ static int ui_init(void)
>   		if (show_period)
>   			data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
>   						  PERF_HPP_DIFF__PERIOD_BASELINE);
> +
> +		if (cycles_hist && i)
> +			data__hpp_register(d, PERF_HPP_DIFF__CYCLES_HIST);
> 
> 
> thanks,
> jirka
> 

Hi Jiri,

Yes, thanks, your code is better. Thanks so much!

Thanks
Jin Yao