[PATCH v4 02/18] perf bench: Update use of pthread mutex/cond

From: Ian Rogers
Date: Fri Aug 26 2022 - 12:43:37 EST

Switch to the use of mutex wrappers that provide better error checking.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/bench/epoll-ctl.c | 33 ++++-----
tools/perf/bench/epoll-wait.c | 33 ++++-----
tools/perf/bench/futex-hash.c | 33 ++++-----
tools/perf/bench/futex-lock-pi.c | 33 ++++-----
tools/perf/bench/futex-requeue.c | 33 ++++-----
tools/perf/bench/futex-wake-parallel.c | 33 ++++-----
tools/perf/bench/futex-wake.c | 33 ++++-----
tools/perf/bench/numa.c | 93 ++++++++++----------------
8 files changed, 153 insertions(+), 171 deletions(-)

diff --git a/tools/perf/bench/epoll-ctl.c b/tools/perf/bench/epoll-ctl.c
index 4256dc5d6236..521d1ff97b06 100644
--- a/tools/perf/bench/epoll-ctl.c
+++ b/tools/perf/bench/epoll-ctl.c
@@ -23,6 +23,7 @@
#include <sys/eventfd.h>
#include <perf/cpumap.h>

+#include "../util/mutex.h"
#include "../util/stat.h"
#include <subcmd/parse-options.h>
#include "bench.h"
@@ -58,10 +59,10 @@ static unsigned int nested = 0;
/* amount of fds to monitor, per thread */
static unsigned int nfds = 64;

-static pthread_mutex_t thread_lock;
+static struct mutex thread_lock;
static unsigned int threads_starting;
static struct stats all_stats[EPOLL_NR_OPS];
-static pthread_cond_t thread_parent, thread_worker;
+static struct cond thread_parent, thread_worker;

struct worker {
int tid;
@@ -174,12 +175,12 @@ static void *workerfn(void *arg)
struct timespec ts = { .tv_sec = 0,
.tv_nsec = 250 };

- 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);

/* Let 'em loose */
do {
@@ -367,9 +368,9 @@ int bench_epoll_ctl(int argc, const char **argv)
for (i = 0; i < EPOLL_NR_OPS; i++)
init_stats(&all_stats[i]);

- 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);

threads_starting = nthreads;

@@ -377,11 +378,11 @@ int bench_epoll_ctl(int argc, const char **argv)

do_threads(worker, cpu);

- 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);

sleep(nsecs);
toggle_done(0, NULL, NULL);
@@ -394,9 +395,9 @@ int bench_epoll_ctl(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);

for (i = 0; i < nthreads; i++) {
unsigned long t[EPOLL_NR_OPS];
diff --git a/tools/perf/bench/epoll-wait.c b/tools/perf/bench/epoll-wait.c
index 2728b0140853..c1cdf03c075d 100644
--- a/tools/perf/bench/epoll-wait.c
+++ b/tools/perf/bench/epoll-wait.c
@@ -79,6 +79,7 @@
#include <perf/cpumap.h>

#include "../util/stat.h"
+#include "../util/mutex.h"
#include <subcmd/parse-options.h>
#include "bench.h"

@@ -109,10 +110,10 @@ static bool multiq; /* use an epoll instance per thread */
/* amount of fds to monitor, per thread */
static unsigned int nfds = 64;

-static pthread_mutex_t thread_lock;
+static struct mutex thread_lock;
static unsigned int threads_starting;
static struct stats throughput_stats;
-static pthread_cond_t thread_parent, thread_worker;
+static struct cond thread_parent, thread_worker;

struct worker {
int tid;
@@ -189,12 +190,12 @@ static void *workerfn(void *arg)
int to = nonblocking? 0 : -1;
int efd = multiq ? w->epollfd : epollfd;

- 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);

do {
/*
@@ -485,9 +486,9 @@ int bench_epoll_wait(int argc, const char **argv)
getpid(), nthreads, oneshot ? " (EPOLLONESHOT semantics)": "", nfds, nsecs);

init_stats(&throughput_stats);
- 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);

threads_starting = nthreads;

@@ -495,11 +496,11 @@ int bench_epoll_wait(int argc, const char **argv)

do_threads(worker, cpu);

- 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);

/*
* At this point the workers should be blocked waiting for read events
@@ -522,9 +523,9 @@ int bench_epoll_wait(int argc, const char **argv)
err(EXIT_FAILURE, "pthread_join");

/* 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);

/* sort the array back before reporting */
if (randomize)
diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c
index f05db4cf983d..2005a3fa3026 100644
--- a/tools/perf/bench/futex-hash.c
+++ b/tools/perf/bench/futex-hash.c
@@ -23,6 +23,7 @@
#include <sys/mman.h>
#include <perf/cpumap.h>

+#include "../util/mutex.h"
#include "../util/stat.h"
#include <subcmd/parse-options.h>
#include "bench.h"
@@ -34,10 +35,10 @@ static bool done = false;
static int futex_flag = 0;

struct timeval bench__start, bench__end, bench__runtime;
-static pthread_mutex_t thread_lock;
+static struct mutex thread_lock;
static unsigned int threads_starting;
static struct stats throughput_stats;
-static pthread_cond_t thread_parent, thread_worker;
+static struct cond thread_parent, thread_worker;

struct worker {
int tid;
@@ -73,12 +74,12 @@ static void *workerfn(void *arg)
unsigned int i;
unsigned long ops = w->ops; /* avoid cacheline bouncing */

- 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);

do {
for (i = 0; i < params.nfutexes; i++, ops++) {
@@ -165,9 +166,9 @@ int bench_futex_hash(int argc, const char **argv)
getpid(), params.nthreads, params.nfutexes, params.fshared ? "shared":"private", params.runtime);

init_stats(&throughput_stats);
- 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);

threads_starting = params.nthreads;
pthread_attr_init(&thread_attr);
@@ -203,11 +204,11 @@ int bench_futex_hash(int argc, const char **argv)
CPU_FREE(cpuset);
pthread_attr_destroy(&thread_attr);

- 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);

sleep(params.runtime);
toggle_done(0, NULL, NULL);
@@ -219,9 +220,9 @@ int bench_futex_hash(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);

for (i = 0; i < params.nthreads; i++) {
unsigned long t = bench__runtime.tv_sec > 0 ?
diff --git a/tools/perf/bench/futex-lock-pi.c b/tools/perf/bench/futex-lock-pi.c
index 0abb3f7ee24f..2d0417949727 100644
--- a/tools/perf/bench/futex-lock-pi.c
+++ b/tools/perf/bench/futex-lock-pi.c
@@ -8,6 +8,7 @@
#include <pthread.h>

#include <signal.h>
+#include "../util/mutex.h"
#include "../util/stat.h"
#include <subcmd/parse-options.h>
#include <linux/compiler.h>
@@ -34,10 +35,10 @@ static u_int32_t global_futex = 0;
static struct worker *worker;
static bool done = false;
static int futex_flag = 0;
-static pthread_mutex_t thread_lock;
+static struct mutex thread_lock;
static unsigned int threads_starting;
static struct stats throughput_stats;
-static pthread_cond_t thread_parent, thread_worker;
+static struct cond thread_parent, thread_worker;

static struct bench_futex_parameters params = {
.runtime = 10,
@@ -83,12 +84,12 @@ static void *workerfn(void *arg)
struct worker *w = (struct worker *) arg;
unsigned long ops = w->ops;

- 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);

do {
int ret;
@@ -197,9 +198,9 @@ int bench_futex_lock_pi(int argc, const char **argv)
getpid(), params.nthreads, params.runtime);

init_stats(&throughput_stats);
- 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);

threads_starting = params.nthreads;
pthread_attr_init(&thread_attr);
@@ -208,11 +209,11 @@ int bench_futex_lock_pi(int argc, const char **argv)
create_threads(worker, thread_attr, cpu);
pthread_attr_destroy(&thread_attr);

- 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);

sleep(params.runtime);
toggle_done(0, NULL, NULL);
@@ -224,9 +225,9 @@ int bench_futex_lock_pi(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);

for (i = 0; i < params.nthreads; i++) {
unsigned long t = bench__runtime.tv_sec > 0 ?
diff --git a/tools/perf/bench/futex-requeue.c b/tools/perf/bench/futex-requeue.c
index b6faabfafb8e..69ad896f556c 100644
--- a/tools/perf/bench/futex-requeue.c
+++ b/tools/perf/bench/futex-requeue.c
@@ -15,6 +15,7 @@
#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, futex2 = 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 requeuetime_stats, requeued_stats;
static unsigned int threads_starting;
static int futex_flag = 0;
@@ -82,12 +83,12 @@ static void *workerfn(void *arg __maybe_unused)
{
int ret;

- 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 (!params.pi) {
@@ -209,9 +210,9 @@ int bench_futex_requeue(int argc, const char **argv)
init_stats(&requeued_stats);
init_stats(&requeuetime_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 nrequeued = 0, wakeups = 0;
@@ -221,11 +222,11 @@ int bench_futex_requeue(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);

@@ -297,9 +298,9 @@ int bench_futex_requeue(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();
diff --git a/tools/perf/bench/futex-wake-parallel.c b/tools/perf/bench/futex-wake-parallel.c
index e47f46a3a47e..6682e49d0ee0 100644
--- a/tools/perf/bench/futex-wake-parallel.c
+++ b/tools/perf/bench/futex-wake-parallel.c
@@ -10,6 +10,7 @@
#include "bench.h"
#include <linux/compiler.h>
#include "../util/debug.h"
+#include "../util/mutex.h"

#ifndef HAVE_PTHREAD_BARRIER
int bench_futex_wake_parallel(int argc __maybe_unused, const char **argv __maybe_unused)
@@ -49,8 +50,8 @@ static u_int32_t futex = 0;

static pthread_t *blocked_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 pthread_barrier_t barrier;
static struct stats waketime_stats, wakeup_stats;
static unsigned int threads_starting;
@@ -125,12 +126,12 @@ static void wakeup_threads(struct thread_data *td, pthread_attr_t thread_attr)

static void *blocked_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) { /* handle spurious wakeups */
if (futex_wait(&futex, 0, NULL, futex_flag) != EINTR)
@@ -294,9 +295,9 @@ int bench_futex_wake_parallel(int argc, const char **argv)
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++) {
waking_worker = calloc(params.nwakes, sizeof(*waking_worker));
@@ -307,11 +308,11 @@ int bench_futex_wake_parallel(int argc, const char **argv)
block_threads(blocked_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);

@@ -332,9 +333,9 @@ int bench_futex_wake_parallel(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();
diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c
index 201a3555f09a..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)
@@ -178,9 +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;
@@ -190,11 +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);

@@ -224,9 +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();
diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
index 20eed1e53f80..e78dedf9e682 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -6,8 +6,6 @@
*/

#include <inttypes.h>
-/* For the CLR_() macros */
-#include <pthread.h>

#include <subcmd/parse-options.h>
#include "../util/cloexec.h"
@@ -35,6 +33,7 @@
#include <linux/zalloc.h>

#include "../util/header.h"
+#include "../util/mutex.h"
#include <numa.h>
#include <numaif.h>

@@ -67,7 +66,7 @@ struct thread_data {
u64 system_time_ns;
u64 user_time_ns;
double speed_gbs;
- pthread_mutex_t *process_lock;
+ struct mutex *process_lock;
};

/* Parameters set by options: */
@@ -137,16 +136,16 @@ struct params {
struct global_info {
u8 *data;

- pthread_mutex_t startup_mutex;
- pthread_cond_t startup_cond;
+ struct mutex startup_mutex;
+ struct cond startup_cond;
int nr_tasks_started;

- pthread_mutex_t start_work_mutex;
- pthread_cond_t start_work_cond;
+ struct mutex start_work_mutex;
+ struct cond start_work_cond;
int nr_tasks_working;
bool start_work;

- pthread_mutex_t stop_work_mutex;
+ struct mutex stop_work_mutex;
u64 bytes_done;

struct thread_data *threads;
@@ -524,30 +523,6 @@ static void * setup_private_data(ssize_t bytes)
return alloc_data(bytes, MAP_PRIVATE, 0, g->p.init_cpu0, g->p.thp, g->p.init_random);
}

-/*
- * Return a process-shared (global) mutex:
- */
-static void init_global_mutex(pthread_mutex_t *mutex)
-{
- pthread_mutexattr_t attr;
-
- pthread_mutexattr_init(&attr);
- pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
- pthread_mutex_init(mutex, &attr);
-}
-
-/*
- * Return a process-shared (global) condition variable:
- */
-static void init_global_cond(pthread_cond_t *cond)
-{
- pthread_condattr_t attr;
-
- pthread_condattr_init(&attr);
- pthread_condattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
- pthread_cond_init(cond, &attr);
-}
-
static int parse_cpu_list(const char *arg)
{
p0.cpu_list_str = strdup(arg);
@@ -1220,22 +1195,22 @@ static void *worker_thread(void *__tdata)
}

if (g->p.serialize_startup) {
- pthread_mutex_lock(&g->startup_mutex);
+ mutex_lock(&g->startup_mutex);
g->nr_tasks_started++;
/* The last thread wakes the main process. */
if (g->nr_tasks_started == g->p.nr_tasks)
- pthread_cond_signal(&g->startup_cond);
+ cond_signal(&g->startup_cond);

- pthread_mutex_unlock(&g->startup_mutex);
+ mutex_unlock(&g->startup_mutex);

/* Here we will wait for the main process to start us all at once: */
- pthread_mutex_lock(&g->start_work_mutex);
+ mutex_lock(&g->start_work_mutex);
g->start_work = false;
g->nr_tasks_working++;
while (!g->start_work)
- pthread_cond_wait(&g->start_work_cond, &g->start_work_mutex);
+ cond_wait(&g->start_work_cond, &g->start_work_mutex);

- pthread_mutex_unlock(&g->start_work_mutex);
+ mutex_unlock(&g->start_work_mutex);
}

gettimeofday(&start0, NULL);
@@ -1254,17 +1229,17 @@ static void *worker_thread(void *__tdata)
val += do_work(thread_data, g->p.bytes_thread, 0, 1, l, val);

if (g->p.sleep_usecs) {
- pthread_mutex_lock(td->process_lock);
+ mutex_lock(td->process_lock);
usleep(g->p.sleep_usecs);
- pthread_mutex_unlock(td->process_lock);
+ mutex_unlock(td->process_lock);
}
/*
* Amount of work to be done under a process-global lock:
*/
if (g->p.bytes_process_locked) {
- pthread_mutex_lock(td->process_lock);
+ mutex_lock(td->process_lock);
val += do_work(process_data, g->p.bytes_process_locked, thread_nr, g->p.nr_threads, l, val);
- pthread_mutex_unlock(td->process_lock);
+ mutex_unlock(td->process_lock);
}

work_done = g->p.bytes_global + g->p.bytes_process +
@@ -1361,9 +1336,9 @@ static void *worker_thread(void *__tdata)

free_data(thread_data, g->p.bytes_thread);

- pthread_mutex_lock(&g->stop_work_mutex);
+ mutex_lock(&g->stop_work_mutex);
g->bytes_done += bytes_done;
- pthread_mutex_unlock(&g->stop_work_mutex);
+ mutex_unlock(&g->stop_work_mutex);

return NULL;
}
@@ -1373,7 +1348,7 @@ static void *worker_thread(void *__tdata)
*/
static void worker_process(int process_nr)
{
- pthread_mutex_t process_lock;
+ struct mutex process_lock;
struct thread_data *td;
pthread_t *pthreads;
u8 *process_data;
@@ -1381,7 +1356,7 @@ static void worker_process(int process_nr)
int ret;
int t;

- pthread_mutex_init(&process_lock, NULL);
+ mutex_init(&process_lock);
set_taskname("process %d", process_nr);

/*
@@ -1540,11 +1515,11 @@ static int init(void)
g->data = setup_shared_data(g->p.bytes_global);

/* Startup serialization: */
- init_global_mutex(&g->start_work_mutex);
- init_global_cond(&g->start_work_cond);
- init_global_mutex(&g->startup_mutex);
- init_global_cond(&g->startup_cond);
- init_global_mutex(&g->stop_work_mutex);
+ mutex_init_pshared(&g->start_work_mutex);
+ cond_init_pshared(&g->start_work_cond);
+ mutex_init_pshared(&g->startup_mutex);
+ cond_init_pshared(&g->startup_cond);
+ mutex_init_pshared(&g->stop_work_mutex);

init_thread_data();

@@ -1633,17 +1608,17 @@ static int __bench_numa(const char *name)
* Wait for all the threads to start up. The last thread will
* signal this process.
*/
- pthread_mutex_lock(&g->startup_mutex);
+ mutex_lock(&g->startup_mutex);
while (g->nr_tasks_started != g->p.nr_tasks)
- pthread_cond_wait(&g->startup_cond, &g->startup_mutex);
+ cond_wait(&g->startup_cond, &g->startup_mutex);

- pthread_mutex_unlock(&g->startup_mutex);
+ mutex_unlock(&g->startup_mutex);

/* Wait for all threads to be at the start_work_cond. */
while (!threads_ready) {
- pthread_mutex_lock(&g->start_work_mutex);
+ mutex_lock(&g->start_work_mutex);
threads_ready = (g->nr_tasks_working == g->p.nr_tasks);
- pthread_mutex_unlock(&g->start_work_mutex);
+ mutex_unlock(&g->start_work_mutex);
if (!threads_ready)
usleep(1);
}
@@ -1661,10 +1636,10 @@ static int __bench_numa(const char *name)

start = stop;
/* Start all threads running. */
- pthread_mutex_lock(&g->start_work_mutex);
+ mutex_lock(&g->start_work_mutex);
g->start_work = true;
- pthread_mutex_unlock(&g->start_work_mutex);
- pthread_cond_broadcast(&g->start_work_cond);
+ mutex_unlock(&g->start_work_mutex);
+ cond_broadcast(&g->start_work_cond);
} else {
gettimeofday(&start, NULL);
}
--
2.37.2.672.g94769d06f0-goog