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perf test workload thloop: Make count increments atomic

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The count variable is incremented by multiple threads, doing so
without an atomic operation causes thread sanitizer warnings. Switch
to using relaxed atomics.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230114215251.271678-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2023-01-14 13:52:51 -08:00 committed by Arnaldo Carvalho de Melo
parent 316769f757
commit 1962ab6f6e
1 changed files with 1 additions and 1 deletions
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2
tools/perf/tests/workloads/thloop.c
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@ -20,7 +20,7 @@ static void sighandler(int sig __maybe_unused)
noinline void test_loop(void)
{
while (!done)
count++;
__atomic_fetch_add(&count, 1, __ATOMIC_RELAXED);
}
static void *thfunc(void *arg)