linux-kernel - Re: [PATCH 3/3] perf header: Rename "sibling cores" to "sibling sockets"

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Date:   Tue, 28 May 2019 15:05:50 -0400
From:   "Liang, Kan" <kan.liang@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, jolsa@...nel.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        ak@...ux.intel.com
Subject: Re: [PATCH 3/3] perf header: Rename "sibling cores" to "sibling
 sockets"



On 5/28/2019 4:59 AM, Jiri Olsa wrote:
> On Thu, May 23, 2019 at 01:41:21PM -0700, kan.liang@...ux.intel.com wrote:
>> From: Kan Liang <kan.liang@...ux.intel.com>
>>
>> The "sibling cores" actually shows the sibling CPUs of a socket.
>> The name "sibling cores" is very misleading.
>>
>> Rename "sibling cores" to "sibling sockets"
> 
> by checking on die topology, I found that thread_siblings_list
> is deprecated/renamed to core_cpus_list.. we should keep that
> in mind and support both
>

Sure, I will introduce THRD_SIB_FMT_NEW for the new name.
#define THRD_SIB_FMT_NEW \
	"%s/devices/system/cpu/cpu%d/topology/core_cpus_list"

I will check new name first, (if N/A, then check the old name), before 
parsing the topology information.

I will add the change in V2.

Thanks,
Kan



> jirka
> 
>>
>> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
>> ---
>>   tools/perf/Documentation/perf.data-file-format.txt | 2 +-
>>   tools/perf/util/header.c                           | 2 +-
>>   2 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt
>> index c731416..dd85163 100644
>> --- a/tools/perf/Documentation/perf.data-file-format.txt
>> +++ b/tools/perf/Documentation/perf.data-file-format.txt
>> @@ -168,7 +168,7 @@ struct {
>>   };
>>   
>>   Example:
>> -	sibling cores   : 0-8
>> +	sibling sockets : 0-8
>>   	sibling dies	: 0-3
>>   	sibling dies	: 4-7
>>   	sibling threads : 0-1
>> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
>> index faa1e38..eb79495 100644
>> --- a/tools/perf/util/header.c
>> +++ b/tools/perf/util/header.c
>> @@ -1465,7 +1465,7 @@ static void print_cpu_topology(struct feat_fd *ff, FILE *fp)
>>   	str = ph->env.sibling_cores;
>>   
>>   	for (i = 0; i < nr; i++) {
>> -		fprintf(fp, "# sibling cores   : %s\n", str);
>> +		fprintf(fp, "# sibling sockets : %s\n", str);
>>   		str += strlen(str) + 1;
>>   	}
>>   
>> -- 
>> 2.7.4
>>