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SubjectRe: [PATCH V3 1/5] perf/core: Add PERF_SAMPLE_WEIGHT_STRUCT
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On 2/4/2021 9:00 AM, Namhyung Kim wrote:
> Hi Kan,
>
> On Sat, Jan 30, 2021 at 2:25 AM Liang, Kan <kan.liang@linux.intel.com> wrote:
> [SNIP]
>> diff --git a/include/uapi/linux/perf_event.h
>> b/include/uapi/linux/perf_event.h
>> index b15e344..c50718a 100644
>> --- a/include/uapi/linux/perf_event.h
>> +++ b/include/uapi/linux/perf_event.h
>> @@ -145,12 +145,14 @@ enum perf_event_sample_format {
>> PERF_SAMPLE_CGROUP = 1U << 21,
>> PERF_SAMPLE_DATA_PAGE_SIZE = 1U << 22,
>> PERF_SAMPLE_CODE_PAGE_SIZE = 1U << 23,
>> + PERF_SAMPLE_WEIGHT_STRUCT = 1U << 24,
>>
>> - PERF_SAMPLE_MAX = 1U << 24, /* non-ABI */
>> + PERF_SAMPLE_MAX = 1U << 25, /* non-ABI */
>>
>> __PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63, /* non-ABI; internal use */
>> };
>>
>> +#define PERF_SAMPLE_WEIGHT_TYPE (PERF_SAMPLE_WEIGHT |
>> PERF_SAMPLE_WEIGHT_STRUCT)
>
> I'm not sure you want to expose it in the uapi header as it's not
> intended to be used IMHO.
>

I'm not sure I understood, but it's indeed used in the tool patch set.

https://lore.kernel.org/lkml/1612296553-21962-6-git-send-email-kan.liang@linux.intel.com/


Thanks,
Kan

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