diff --git a/src/thread.c b/src/thread.c
index b2bfd4d..a6e76c3 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -28,6 +28,7 @@
 #include <haproxy/global.h>
 #include <haproxy/log.h>
 #include <haproxy/thread.h>
+#include <haproxy/time.h>
 #include <haproxy/tools.h>
 
 struct thread_info ha_thread_info[MAX_THREADS] = { };
@@ -358,15 +359,6 @@
 	}
 }
 
-static uint64_t nsec_now(void)
-{
-        struct timespec ts;
-
-        clock_gettime(CLOCK_MONOTONIC, &ts);
-        return ((uint64_t) ts.tv_sec * 1000000000ULL +
-                (uint64_t) ts.tv_nsec);
-}
-
 void __ha_rwlock_init(struct ha_rwlock *l)
 {
 	memset(l, 0, sizeof(struct ha_rwlock));
@@ -390,9 +382,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_writers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_WRLOCK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_write_locked);
 
@@ -416,9 +408,9 @@
 	/* We set waiting writer because trywrlock could wait for readers to quit */
 	HA_ATOMIC_OR(&l->info.wait_writers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	r = __RWLOCK_TRYWRLOCK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (now_mono_time() - start_time));
 	if (unlikely(r)) {
 		HA_ATOMIC_AND(&l->info.wait_writers, ~tid_bit);
 		return r;
@@ -462,9 +454,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_readers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_RDLOCK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_read, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_read, (now_mono_time() - start_time));
 	HA_ATOMIC_INC(&lock_stats[lbl].num_read_locked);
 
 	HA_ATOMIC_OR(&l->info.cur_readers, tid_bit);
@@ -517,9 +509,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_readers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_WRTORD(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_read, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_read, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_read_locked);
 
@@ -545,9 +537,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_seekers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_WRTOSK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_seek_locked);
 
@@ -570,9 +562,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_seekers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_SKLOCK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_seek_locked);
 
@@ -597,9 +589,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_writers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_SKTOWR(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_write_locked);
 
@@ -625,9 +617,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_readers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__RWLOCK_SKTORD(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_read, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_read, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_read_locked);
 
@@ -667,9 +659,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_seekers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	r = __RWLOCK_TRYSKLOCK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (now_mono_time() - start_time));
 
 	if (likely(!r)) {
 		/* got the lock ! */
@@ -698,9 +690,9 @@
 
 	HA_ATOMIC_OR(&l->info.wait_seekers, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	r = __RWLOCK_TRYRDTOSK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_seek, (now_mono_time() - start_time));
 
 	if (likely(!r)) {
 		/* got the lock ! */
@@ -740,9 +732,9 @@
 
 	HA_ATOMIC_OR(&l->info.waiters, tid_bit);
 
-	start_time = nsec_now();
+	start_time = now_mono_time();
 	__SPIN_LOCK(&l->lock);
-	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (nsec_now() - start_time));
+	HA_ATOMIC_ADD(&lock_stats[lbl].nsec_wait_for_write, (now_mono_time() - start_time));
 
 	HA_ATOMIC_INC(&lock_stats[lbl].num_write_locked);