HOWTO: add description and examples of verify triggers

[fio.git] / gettime.c

diff --git a/gettime.c b/gettime.c
index 98e83b85a6b55ef2a059ced730459e1f9c1697a2..6a7e35f87249905c044165bfe1869f4ac0605e99 100644 (file)
--- a/gettime.c
+++ b/gettime.c
@@ -377,7 +377,7 @@ void fio_clock_init(void)
                log_info("fio: clocksource=cpu may not be reliable\n");
 }
 
-uint64_t utime_since(struct timeval *s, struct timeval *e)
+uint64_t utime_since(const struct timeval *s, const struct timeval *e)
 {
        long sec, usec;
        uint64_t ret;
@@ -400,7 +400,7 @@ uint64_t utime_since(struct timeval *s, struct timeval *e)
        return ret;
 }
 
-uint64_t utime_since_now(struct timeval *s)
+uint64_t utime_since_now(const struct timeval *s)
 {
        struct timeval t;
 
@@ -408,7 +408,7 @@ uint64_t utime_since_now(struct timeval *s)
        return utime_since(s, &t);
 }
 
-uint64_t mtime_since(struct timeval *s, struct timeval *e)
+uint64_t mtime_since(const struct timeval *s, const struct timeval *e)
 {
        long sec, usec, ret;
 
@@ -429,7 +429,7 @@ uint64_t mtime_since(struct timeval *s, struct timeval *e)
        return ret;
 }
 
-uint64_t mtime_since_now(struct timeval *s)
+uint64_t mtime_since_now(const struct timeval *s)
 {
        struct timeval t;
        void *p = __builtin_return_address(0);
@@ -438,7 +438,7 @@ uint64_t mtime_since_now(struct timeval *s)
        return mtime_since(s, &t);
 }
 
-uint64_t time_since_now(struct timeval *s)
+uint64_t time_since_now(const struct timeval *s)
 {
        return mtime_since_now(s) / 1000;
 }
@@ -531,28 +531,32 @@ static int clock_cmp(const void *p1, const void *p2)
 
 int fio_monotonic_clocktest(void)
 {
-       struct clock_thread *threads;
+       struct clock_thread *cthreads;
        unsigned int nr_cpus = cpus_online();
        struct clock_entry *entries;
-       unsigned long tentries, failed;
+       unsigned long tentries, failed = 0;
        struct clock_entry *prev, *this;
        uint32_t seq = 0;
        unsigned int i;
 
        log_info("cs: reliable_tsc: %s\n", tsc_reliable ? "yes" : "no");
 
+#ifdef FIO_INC_DEBUG
        fio_debug |= 1U << FD_TIME;
+#endif
        calibrate_cpu_clock();
+#ifdef FIO_INC_DEBUG
        fio_debug &= ~(1U << FD_TIME);
+#endif
 
-       threads = malloc(nr_cpus * sizeof(struct clock_thread));
+       cthreads = malloc(nr_cpus * sizeof(struct clock_thread));
        tentries = CLOCK_ENTRIES * nr_cpus;
        entries = malloc(tentries * sizeof(struct clock_entry));
 
        log_info("cs: Testing %u CPUs\n", nr_cpus);
 
        for (i = 0; i < nr_cpus; i++) {
-               struct clock_thread *t = &threads[i];
+               struct clock_thread *t = &cthreads[i];
 
                t->cpu = i;
                t->seq = &seq;
@@ -560,30 +564,34 @@ int fio_monotonic_clocktest(void)
                pthread_mutex_init(&t->lock, NULL);
                pthread_mutex_init(&t->started, NULL);
                pthread_mutex_lock(&t->lock);
-               pthread_create(&t->thread, NULL, clock_thread_fn, t);
+               if (pthread_create(&t->thread, NULL, clock_thread_fn, t)) {
+                       failed++;
+                       nr_cpus = i;
+                       break;
+               }
        }
 
        for (i = 0; i < nr_cpus; i++) {
-               struct clock_thread *t = &threads[i];
+               struct clock_thread *t = &cthreads[i];
 
                pthread_mutex_lock(&t->started);
        }
 
        for (i = 0; i < nr_cpus; i++) {
-               struct clock_thread *t = &threads[i];
+               struct clock_thread *t = &cthreads[i];
 
                pthread_mutex_unlock(&t->lock);
        }
 
-       for (failed = i = 0; i < nr_cpus; i++) {
-               struct clock_thread *t = &threads[i];
+       for (i = 0; i < nr_cpus; i++) {
+               struct clock_thread *t = &cthreads[i];
                void *ret;
 
                pthread_join(t->thread, &ret);
                if (ret)
                        failed++;
        }
-       free(threads);
+       free(cthreads);
 
        if (failed) {
                log_err("Clocksource test: %lu threads failed\n", failed);