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perf tools: Allow creation of cgroup without open

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This is a preparation for a test case of expanding events for multiple
cgroups.  Instead of using real system cgroup, the test will use fake
cgroups so it needs a way to have them without a open file descriptor.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200924124455.336326-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2020-09-24 21:44:54 +09:00 • committed by Arnaldo Carvalho de Melo
parent b214ba8c42
commit 89fb1ca2ab
3 changed files with 14 additions and 9 deletions
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2
tools/perf/builtin-stat.c
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@ -2235,7 +2235,7 @@ int cmd_stat(int argc, const char **argv)
}
if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
&stat_config.metric_events) < 0)
&stat_config.metric_events, true) < 0)
goto out;
}