From: Jens Axboe <axboe@kernel.dk>
Date: Sun, 8 Apr 2018 21:54:26 +0000 (-0600)
Subject: steadystate: check for division by zero in mean calculation
X-Git-Tag: fio-3.6~8
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=9fac0db7a09bac08bbff9b213d3b1daceee07679;p=fio.git

steadystate: check for division by zero in mean calculation

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/steadystate.c b/steadystate.c
index 1e3a5468..ee1c0e5b 100644
--- a/steadystate.c
+++ b/steadystate.c
@@ -350,6 +350,9 @@ 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 +364,9 @@ 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];