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2023-11-22 d0a428a6556ea5a006e22e28b0b1cd037885fe20

 kernel/tools/perf/bench/futex-lock-pi.c
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@@ -35,7 +35,6 @@
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 static bool done = false, fshared = false;
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 static unsigned int nthreads = 0;
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 static int futex_flag = 0;
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-struct timeval start, end, runtime;
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 static pthread_mutex_t thread_lock;
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 static unsigned int threads_starting;
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 static struct stats throughput_stats;
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@@ -62,7 +61,7 @@
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 	printf("%sAveraged %ld operations/sec (+- %.2f%%), total secs = %d\n",
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 	       !silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg),
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-	       (int) runtime.tv_sec);
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+	       (int)bench__runtime.tv_sec);
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 }
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 static void toggle_done(int sig __maybe_unused,
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@@ -71,8 +70,8 @@
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 {
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 	/* inform all threads that we're done for the day */
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 	done = true;
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-	gettimeofday(&end, NULL);
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-	timersub(&end, &start, &runtime);
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+	gettimeofday(&bench__end, NULL);
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+	timersub(&bench__end, &bench__start, &bench__runtime);
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 }
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 static void *workerfn(void *arg)
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@@ -183,7 +182,7 @@
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 	threads_starting = nthreads;
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 	pthread_attr_init(&thread_attr);
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-	gettimeofday(&start, NULL);
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+	gettimeofday(&bench__start, NULL);
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 	create_threads(worker, thread_attr, cpu);
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 	pthread_attr_destroy(&thread_attr);
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@@ -209,7 +208,7 @@
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 	pthread_mutex_destroy(&thread_lock);
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 	for (i = 0; i < nthreads; i++) {
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-		unsigned long t = worker[i].ops/runtime.tv_sec;
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+		unsigned long t = worker[i].ops / bench__runtime.tv_sec;
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 		update_stats(&throughput_stats, t);
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 		if (!silent)