On Wed, Jan 27, 2021 at 07:38:41AM -0800, [email protected] wrote: > diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h > index b15e344..13b4019 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) > /* > * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set > * > @@ -890,7 +892,16 @@ enum perf_event_type { > * char data[size]; > * u64 dyn_size; } && PERF_SAMPLE_STACK_USER > * > - * { u64 weight; } && PERF_SAMPLE_WEIGHT > + * { union perf_sample_weight > + * { > + * u64 full; && PERF_SAMPLE_WEIGHT > + * struct { > + * u32 low_dword; > + * u16 high_word; > + * u16 higher_word; > + * } && PERF_SAMPLE_WEIGHT_STRUCT > + * } > + * } > * { u64 data_src; } && PERF_SAMPLE_DATA_SRC > * { u64 transaction; } && > PERF_SAMPLE_TRANSACTION > * { u64 abi; # enum perf_sample_regs_abi > @@ -1248,4 +1259,13 @@ struct perf_branch_entry { > reserved:40; > }; > > +union perf_sample_weight { > + __u64 full; > + struct { > + __u32 low_dword; > + __u16 high_word; > + __u16 higher_word; > + }; > +};
*urgh*, my naming lives ... anybody got a better suggestion? Also, do we want to care about byte order?
