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-rw-r--r--tools/perf/bench/futex-wake.c57
1 files changed, 34 insertions, 23 deletions
diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c
index 2226a475e782..9ecab6620a87 100644
--- a/tools/perf/bench/futex-wake.c
+++ b/tools/perf/bench/futex-wake.c
@@ -14,6 +14,7 @@
#include <pthread.h>
#include <signal.h>
+#include "../util/mutex.h"
#include "../util/stat.h"
#include <subcmd/parse-options.h>
#include <linux/compiler.h>
@@ -34,8 +35,8 @@ static u_int32_t futex1 = 0;
static pthread_t *worker;
static bool done = false;
-static pthread_mutex_t thread_lock;
-static pthread_cond_t thread_parent, thread_worker;
+static struct mutex thread_lock;
+static struct cond thread_parent, thread_worker;
static struct stats waketime_stats, wakeup_stats;
static unsigned int threads_starting;
static int futex_flag = 0;
@@ -65,12 +66,12 @@ static const char * const bench_futex_wake_usage[] = {
static void *workerfn(void *arg __maybe_unused)
{
- pthread_mutex_lock(&thread_lock);
+ mutex_lock(&thread_lock);
threads_starting--;
if (!threads_starting)
- pthread_cond_signal(&thread_parent);
- pthread_cond_wait(&thread_worker, &thread_lock);
- pthread_mutex_unlock(&thread_lock);
+ cond_signal(&thread_parent);
+ cond_wait(&thread_worker, &thread_lock);
+ mutex_unlock(&thread_lock);
while (1) {
if (futex_wait(&futex1, 0, NULL, futex_flag) != EINTR)
@@ -97,22 +98,32 @@ static void print_summary(void)
static void block_threads(pthread_t *w,
pthread_attr_t thread_attr, struct perf_cpu_map *cpu)
{
- cpu_set_t cpuset;
+ cpu_set_t *cpuset;
unsigned int i;
-
+ size_t size;
+ int nrcpus = perf_cpu_map__nr(cpu);
threads_starting = params.nthreads;
+ cpuset = CPU_ALLOC(nrcpus);
+ BUG_ON(!cpuset);
+ size = CPU_ALLOC_SIZE(nrcpus);
+
/* create and block all threads */
for (i = 0; i < params.nthreads; i++) {
- CPU_ZERO(&cpuset);
- CPU_SET(cpu->map[i % cpu->nr], &cpuset);
+ CPU_ZERO_S(size, cpuset);
+ CPU_SET_S(perf_cpu_map__cpu(cpu, i % perf_cpu_map__nr(cpu)).cpu, size, cpuset);
- if (pthread_attr_setaffinity_np(&thread_attr, sizeof(cpu_set_t), &cpuset))
+ if (pthread_attr_setaffinity_np(&thread_attr, size, cpuset)) {
+ CPU_FREE(cpuset);
err(EXIT_FAILURE, "pthread_attr_setaffinity_np");
+ }
- if (pthread_create(&w[i], &thread_attr, workerfn, NULL))
+ if (pthread_create(&w[i], &thread_attr, workerfn, NULL)) {
+ CPU_FREE(cpuset);
err(EXIT_FAILURE, "pthread_create");
+ }
}
+ CPU_FREE(cpuset);
}
static void toggle_done(int sig __maybe_unused,
@@ -151,7 +162,7 @@ int bench_futex_wake(int argc, const char **argv)
}
if (!params.nthreads)
- params.nthreads = cpu->nr;
+ params.nthreads = perf_cpu_map__nr(cpu);
worker = calloc(params.nthreads, sizeof(*worker));
if (!worker)
@@ -168,9 +179,9 @@ int bench_futex_wake(int argc, const char **argv)
init_stats(&wakeup_stats);
init_stats(&waketime_stats);
pthread_attr_init(&thread_attr);
- pthread_mutex_init(&thread_lock, NULL);
- pthread_cond_init(&thread_parent, NULL);
- pthread_cond_init(&thread_worker, NULL);
+ mutex_init(&thread_lock);
+ cond_init(&thread_parent);
+ cond_init(&thread_worker);
for (j = 0; j < bench_repeat && !done; j++) {
unsigned int nwoken = 0;
@@ -180,11 +191,11 @@ int bench_futex_wake(int argc, const char **argv)
block_threads(worker, thread_attr, cpu);
/* make sure all threads are already blocked */
- pthread_mutex_lock(&thread_lock);
+ mutex_lock(&thread_lock);
while (threads_starting)
- pthread_cond_wait(&thread_parent, &thread_lock);
- pthread_cond_broadcast(&thread_worker);
- pthread_mutex_unlock(&thread_lock);
+ cond_wait(&thread_parent, &thread_lock);
+ cond_broadcast(&thread_worker);
+ mutex_unlock(&thread_lock);
usleep(100000);
@@ -214,9 +225,9 @@ int bench_futex_wake(int argc, const char **argv)
}
/* cleanup & report results */
- pthread_cond_destroy(&thread_parent);
- pthread_cond_destroy(&thread_worker);
- pthread_mutex_destroy(&thread_lock);
+ cond_destroy(&thread_parent);
+ cond_destroy(&thread_worker);
+ mutex_destroy(&thread_lock);
pthread_attr_destroy(&thread_attr);
print_summary();