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| author | Leo Yan <leo.yan@arm.com> | 2024-11-07 15:53:08 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-12-09 23:52:41 +0300 |
| commit | 9eef3ec920f558aabcf7bd0acd55d7d037b9e56b (patch) | |
| tree | 3c320b075bf99b40ab71776c634be5de9f9f76d3 | |
| parent | fb953dfa66ce90c12c3b581db4e213e810591d1e (diff) | |
| download | linux-9eef3ec920f558aabcf7bd0acd55d7d037b9e56b.tar.xz | |
perf cpumap: Add checking for reference counter
For the CPU map merging test, add an extra check for the reference
counter before releasing the last CPU map.
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20241107125308.41226-4-leo.yan@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/tests/cpumap.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c index f8187a801b8e..5ed7ff072ea3 100644 --- a/tools/perf/tests/cpumap.c +++ b/tools/perf/tests/cpumap.c @@ -167,6 +167,15 @@ static int __test__cpu_map_merge(const char *lhs, const char *rhs, int nr, const cpu_map__snprint(a, buf, sizeof(buf)); TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, expected)); perf_cpu_map__put(b); + + /* + * If 'b' is a superset of 'a', 'a' points to the same map with the + * map 'b'. In this case, the owner 'b' has released the resource above + * but 'a' still keeps the ownership, the reference counter should be 1. + */ + TEST_ASSERT_VAL("unexpected refcnt: bad result", + refcount_read(perf_cpu_map__refcnt(a)) == 1); + perf_cpu_map__put(a); return 0; } |