From fb6c79d7261afb7e942251254ea47951c2a9a706 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 10 Feb 2021 17:33:27 +0900 Subject: perf tools: Add 'cgroup-switches' software event It counts how often cgroups are changed actually during the context switches. # perf stat -a -e context-switches,cgroup-switches -a sleep 1 Performance counter stats for 'system wide': 11,267 context-switches 10,950 cgroup-switches 1.015634369 seconds time elapsed Committer notes: The kernel patches landed in v5.13, but this entry wasn't filled in perf's parse-events tables, which was leading to a segfault when running 'perf list' on a kernel with that feature, as reported by Thomas Richter. Also removed the part touching tools/include/uapi/linux/perf_event.h as it was updated in the usual sync with the kernel UAPI headers, in a previous, already upstream, patch. Signed-off-by: Namhyung Kim Cc: Alexander Shishkin Cc: Andi Kleen Cc: Heiko Carstens Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Richter Link: http://lore.kernel.org/lkml/20210210083327.22726-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools/perf/util/parse-events.c') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 4dad14265b81..269997066f6e 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -150,6 +150,10 @@ struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { .symbol = "bpf-output", .alias = "", }, + [PERF_COUNT_SW_CGROUP_SWITCHES] = { + .symbol = "cgroup-switches", + .alias = "", + }, }; #define __PERF_EVENT_FIELD(config, name) \ -- cgit v1.2.3