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Message-Id: <1720700179-22839-1-git-send-email-ajay.kaher@broadcom.com>
Date: Thu, 11 Jul 2024 17:46:16 +0530
From: Ajay Kaher <ajay.kaher@...adcom.com>
To: peterz@...radead.org,
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Subject: [PATCH RFC 0/3] perf: add logic to collect off-cpu samples
Add --off-cpu-kernel option to capture off-cpu sample alongwith on-cpu
samples.
off-cpu samples represent time spent by task when it was on wait queue
(schedule out to waiting for events, blocked on I/O, locks, timers,
paging/swapping, etc)
Refer following links for more details:
https://lpc.events/event/17/contributions/1556/
https://www.youtube.com/watch?v=sF2faKGRnjs
Ajay Kaher (3):
perf/core: add logic to collect off-cpu sample
perf/record: add options --off-cpu-kernel
perf/report: add off-cpu samples
include/linux/perf_event.h | 16 ++++++++++++++
include/uapi/linux/perf_event.h | 3 ++-
kernel/events/core.c | 27 ++++++++++++++++++-----
tools/include/uapi/linux/perf_event.h | 3 ++-
tools/perf/builtin-record.c | 2 ++
tools/perf/util/events_stats.h | 2 ++
tools/perf/util/evsel.c | 4 ++++
tools/perf/util/hist.c | 31 ++++++++++++++++++++++++---
tools/perf/util/hist.h | 1 +
tools/perf/util/record.h | 1 +
tools/perf/util/sample.h | 1 +
11 files changed, 81 insertions(+), 10 deletions(-)
--
2.39.0
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