Re: [PATCH 13/16] perf: Add a speculative page fault sw events
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2017-08-09 13:18:21
Also in:
linux-mm, lkml
Laurent Dufour [off-list ref] writes:
quoted hunk ↗ jump to hunk
Add new software events to count succeeded and failed speculative page faults. Signed-off-by: Laurent Dufour <redacted> --- include/uapi/linux/perf_event.h | 2 ++ 1 file changed, 2 insertions(+)diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index b1c0b187acfe..fbfb03dff334 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h@@ -111,6 +111,8 @@ enum perf_sw_ids { PERF_COUNT_SW_EMULATION_FAULTS = 8, PERF_COUNT_SW_DUMMY = 9, PERF_COUNT_SW_BPF_OUTPUT = 10, + PERF_COUNT_SW_SPF_DONE = 11, + PERF_COUNT_SW_SPF_FAILED = 12,
Can't you calculate: PERF_COUNT_SW_SPF_FAILED = PERF_COUNT_SW_PAGE_FAULTS - PERF_COUNT_SW_SPF_DONE ie. do you need a separate event for it? cheers