On 3/2/20 8:18 PM, Mark Rutland wrote:
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 377d794d3105..ff252618ca93 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -142,8 +142,9 @@ enum perf_event_sample_format { PERF_SAMPLE_REGS_INTR = 1U << 18, PERF_SAMPLE_PHYS_ADDR = 1U << 19, PERF_SAMPLE_AUX = 1U << 20, + PERF_SAMPLE_PIPELINE_HAZ = 1U << 21,Can we please have perf_event_open() reject this sample flag for PMUs without the new callback (introduced in the next patch)? That way it'll be possible to detect whether the PMU exposes this.
Sure. Will change it. Ravi
