From: Ajay Kaher <ajay.kaher@broadcom.com>
To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
namhyung@kernel.org
Cc: mark.rutland@arm.com, rostedt@goodmis.org,
alexander.shishkin@linux.intel.com, jolsa@kernel.org,
irogers@google.com, adrian.hunter@intel.com,
kan.liang@linux.intel.com, yangjihong1@huawei.com,
zegao2021@gmail.com, leo.yan@linux.dev, asmadeus@codewreck.org,
siyanteng@loongson.cn, sunhaiyong@loongson.cn,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
ajay.kaher@broadcom.com, alexey.makhalov@broadcom.com,
vasavi.sirnapalli@broadcom.com
Subject: [PATCH RFC 0/3] perf: add logic to collect off-cpu samples
Date: Thu, 11 Jul 2024 17:46:16 +0530 [thread overview]
Message-ID: <1720700179-22839-1-git-send-email-ajay.kaher@broadcom.com> (raw)
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
next reply other threads:[~2024-07-11 12:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-11 12:16 Ajay Kaher [this message]
2024-07-11 12:16 ` [PATCH RFC 1/3] perf/core: add logic to collect off-cpu sample Ajay Kaher
2024-07-11 21:49 ` Peter Zijlstra
2024-07-14 16:23 ` Ajay Kaher
2024-07-15 11:48 ` Peter Zijlstra
2024-07-11 12:16 ` [PATCH RFC 2/3] perf/record: add options --off-cpu-kernel Ajay Kaher
2024-07-11 12:16 ` [PATCH RFC 3/3] perf/report: add off-cpu samples Ajay Kaher
2024-07-11 21:58 ` [PATCH RFC 0/3] perf: add logic to collect " Ian Rogers
2024-07-13 7:42 ` Ajay Kaher
2024-07-14 18:32 ` Ian Rogers
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