X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;ds=sidebyside;f=steadystate.c;h=ad19318c2a23f50cda50f6aef7927e4f0adde022;hb=114eadb2d1df6a86afdcc42a21310d8c5559e72d;hp=1e3a546896ad8b1379368019272ba3ab11b6284f;hpb=ec2ea18e87fad6c42d6875cd4ee1bb25ef9b4627;p=fio.git

diff --git a/steadystate.c b/steadystate.c
index 1e3a5468..ad19318c 100644
--- a/steadystate.c
+++ b/steadystate.c
@@ -196,7 +196,7 @@ static bool steadystate_deviation(uint64_t iops, uint64_t bw,
 	return false;
 }
 
-void steadystate_check(void)
+int steadystate_check(void)
 {
 	int i, j, ddir, prev_groupid, group_ramp_time_over = 0;
 	unsigned long rate_time;
@@ -208,6 +208,7 @@ void steadystate_check(void)
 
 	prev_groupid = -1;
 	for_each_td(td, i) {
+		const bool needs_lock = td_async_processing(td);
 		struct steadystate_data *ss = &td->ss;
 
 		if (!ss->dur || td->runstate <= TD_SETTING_UP ||
@@ -235,23 +236,20 @@ void steadystate_check(void)
 				ss->state |= FIO_SS_RAMP_OVER;
 		}
 
-		td_io_u_lock(td);
+		if (needs_lock)
+			__td_io_u_lock(td);
+
 		for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
 			td_iops += td->io_blocks[ddir];
 			td_bytes += td->io_bytes[ddir];
 		}
-		td_io_u_unlock(td);
+
+		if (needs_lock)
+			__td_io_u_unlock(td);
 
 		rate_time = mtime_since(&ss->prev_time, &now);
 		memcpy(&ss->prev_time, &now, sizeof(now));
 
-		/*
-		 * Begin monitoring when job starts but don't actually use
-		 * data in checking stopping criterion until ss->ramp_time is
-		 * over. This ensures that we will have a sane value in
-		 * prev_iops/bw the first time through after ss->ramp_time
-		 * is done.
-		 */
 		if (ss->state & FIO_SS_RAMP_OVER) {
 			group_bw += 1000 * (td_bytes - ss->prev_bytes) / rate_time;
 			group_iops += 1000 * (td_iops - ss->prev_iops) / rate_time;
@@ -297,6 +295,7 @@ void steadystate_check(void)
 			}
 		}
 	}
+	return 0;
 }
 
 int td_steadystate_init(struct thread_data *td)
@@ -350,6 +349,9 @@ uint64_t steadystate_bw_mean(struct thread_stat *ts)
 	int i;
 	uint64_t sum;
 
+	if (!ts->ss_dur)
+		return 0;
+
 	for (i = 0, sum = 0; i < ts->ss_dur; i++)
 		sum += ts->ss_bw_data[i];
 
@@ -361,6 +363,9 @@ uint64_t steadystate_iops_mean(struct thread_stat *ts)
 	int i;
 	uint64_t sum;
 
+	if (!ts->ss_dur)
+		return 0;
+
 	for (i = 0, sum = 0; i < ts->ss_dur; i++)
 		sum += ts->ss_iops_data[i];