Messages in this thread | | | From | Namhyung Kim <> | Date | Fri, 5 Feb 2021 19:43:51 +0900 | Subject | Re: [PATCH V3 1/5] perf/core: Add PERF_SAMPLE_WEIGHT_STRUCT |
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On Fri, Feb 5, 2021 at 12:24 AM Liang, Kan <kan.liang@linux.intel.com> wrote: > > 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/
Well, it's not a big deal.. but I just worried if some users might do
event.attr.sample_type = PERF_SAMPLE_WEIGHT_TYPE;
Thanks, Namhyung
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