Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH v2 2/9] perf evsel: Avoid close(-1) | Date | Sun, 20 Oct 2019 10:51:55 -0700 |
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From: Andi Kleen <ak@linux.intel.com>
In some weak fallback cases close can be called a lot with -1. Check for this case and avoid calling close then.
This is mainly to shut up valgrind which complains about this case.
Signed-off-by: Andi Kleen <ak@linux.intel.com> --- tools/perf/lib/evsel.c | 3 ++- tools/perf/util/evsel.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c index a8cb582e2721..5a89857b0381 100644 --- a/tools/perf/lib/evsel.c +++ b/tools/perf/lib/evsel.c @@ -120,7 +120,8 @@ void perf_evsel__close_fd(struct perf_evsel *evsel) for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) { - close(FD(evsel, cpu, thread)); + if (FD(evsel, cpu, thread) >= 0) + close(FD(evsel, cpu, thread)); FD(evsel, cpu, thread) = -1; } } diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index d831038b55f2..d4451846af93 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1815,7 +1815,8 @@ int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, old_errno = errno; do { while (--thread >= 0) { - close(FD(evsel, cpu, thread)); + if (FD(evsel, cpu, thread) >= 0) + close(FD(evsel, cpu, thread)); FD(evsel, cpu, thread) = -1; } thread = nthreads; -- 2.21.0
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