linux-kernel - Re: [PATCH v1 4/9] perf util: Update and print per-thread shadow stats

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <cff31a9e-c23c-8183-dd58-2d18d6341099@linux.intel.com>
Date:   Wed, 22 Nov 2017 11:10:37 +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 v1 4/9] perf util: Update and print per-thread shadow
 stats



On 11/21/2017 11:18 PM, Jiri Olsa wrote:
> On Mon, Nov 20, 2017 at 10:43:39PM +0800, Jin Yao wrote:
> 
> SNIP
> 
>>   	if (num == 0)
>> diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
>> index 151e9ef..50bb16d 100644
>> --- a/tools/perf/util/stat.c
>> +++ b/tools/perf/util/stat.c
>> @@ -278,9 +278,16 @@ process_counter_values(struct perf_stat_config *config, struct perf_evsel *evsel
>>   			perf_evsel__compute_deltas(evsel, cpu, thread, count);
>>   		perf_counts_values__scale(count, config->scale, NULL);
>>   		if (config->aggr_mode == AGGR_NONE)
>> -			perf_stat__update_shadow_stats(evsel, count->val, cpu);
>> -		if (config->aggr_mode == AGGR_THREAD)
>> -			perf_stat__update_shadow_stats(evsel, count->val, 0);
>> +			perf_stat__update_shadow_stats(evsel, count->val, cpu,
>> +						       NULL);
>> +		if (config->aggr_mode == AGGR_THREAD) {
>> +			if (config->stats)
>> +				perf_stat__update_shadow_stats(evsel,
>> +					count->val, 0, &config->stats[thread]);
> 
> please add this part together with config->stats allocation/usage
> and keep this change only about adding the struct runtime_stat *stat
> into the code path with no functional change
> 
> thanks,
> jirka
> 

The interface of perf_stat__update_shadow_stats() is changed (added with 
a new parameter 'struct runtime_stat *stat').

If I move above part to another patch (e.g. move to 
v1-0006-perf-stat-Allocate-shadow-stats-buffer-for-thread.patch), the 
compilation would be failed if only applying with this patch. It's not 
good for git bisect.

Thanks
Jin Yao