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authorNamhyung Kim <namhyung@kernel.org>2021-06-25 00:18:24 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-07-01 15:00:33 -0300
commit21bcc7266129a68919438934a37c8793a528ff2b (patch)
tree2750846fc438dfc5115664cea295fc26a53800bf /tools/perf/util/cgroup.h
parent69e874db4dded0f2fe56ae623d7f54318395c87d (diff)
perf tools: Add cgroup_is_v2() helper
The cgroup_is_v2() is to check if the given subsystem is mounted on cgroup v2 or not. It'll be used by BPF cgroup code later. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20210625071826.608504-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/cgroup.h')
-rw-r--r--tools/perf/util/cgroup.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/cgroup.h b/tools/perf/util/cgroup.h
index f3c978746999..de5b272560ab 100644
--- a/tools/perf/util/cgroup.h
+++ b/tools/perf/util/cgroup.h
@@ -48,4 +48,6 @@ static inline int read_cgroup_id(struct cgroup *cgrp __maybe_unused)
}
#endif /* HAVE_FILE_HANDLE */
+int cgroup_is_v2(const char *subsys);
+
#endif /* __CGROUP_H__ */