X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=test_qsbr.c;h=488c9041b1aae96d267aa6ea8e3ec4f027fc3032;hp=7ff1aca9c7600994f5b2ad30d79d0ca7fd3a0e60;hb=daddf5b0bf1ec7aeaa56c278cf4c1dd1094c174a;hpb=8b632babd61dd1708c4cf95f1f417469f8f6a528

diff --git a/test_qsbr.c b/test_qsbr.c
index 7ff1aca..488c904 100644
--- a/test_qsbr.c
+++ b/test_qsbr.c
@@ -65,9 +65,15 @@ static struct test_array *test_rcu_pointer;
 
 static unsigned long duration;
 
-/* read-side C.S. duration, in us */
+/* read-side C.S. duration, in loops */
 static unsigned long rduration;
 
+static inline void loop_sleep(unsigned long l)
+{
+	while(l-- != 0)
+		cpu_relax();
+}
+
 /*
  * returns 0 if test should end.
  */
@@ -168,7 +174,7 @@ void *thr_reader(void *_count)
 		if (local_ptr)
 			assert(local_ptr->a == 8);
 		if (unlikely(rduration))
-			usleep(rduration);
+			loop_sleep(rduration);
 		_rcu_read_unlock();
 		nr_reads++;
 		/* QS each 1024 reads */
@@ -233,7 +239,7 @@ void show_usage(int argc, char **argv)
 	printf(" [-r] [-w] (yield reader and/or writer)");
 #endif
 	printf(" [-d delay] (writer period (us))");
-	printf(" [-c duration] (reader C.S. duration (us))");
+	printf(" [-c duration] (reader C.S. duration (in loops))");
 	printf(" [-a cpu#] [-a cpu#]... (affinity)");
 	printf("\n");
 }