From: Jens Axboe <axboe@fb.com>
Date: Mon, 14 Apr 2014 15:49:38 +0000 (-0600)
Subject: stat: fix potential divide-by-zero
X-Git-Tag: fio-2.1.9~47
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=0956264f3dca6a0467092fe9ef335f3cae1c6177;p=fio.git

stat: fix potential divide-by-zero

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/stat.c b/stat.c
index ca733108..1ef88ddf 100644
--- a/stat.c
+++ b/stat.c
@@ -1803,7 +1803,11 @@ void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
 		if (!delta)
 			continue; /* No entries for interval */
 
-		rate = delta * 1000 / spent / 1024;
+		if (spent)
+			rate = delta * 1000 / spent / 1024;
+		else
+			rate = 0;
+
 		add_stat_sample(&ts->bw_stat[ddir], rate);
 
 		if (td->bw_log)
@@ -1838,7 +1842,11 @@ void add_iops_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs
 		if (!delta)
 			continue; /* No entries for interval */
 
-		iops = (delta * 1000) / spent;
+		if (spent)
+			iops = (delta * 1000) / spent;
+		else
+			iops = 0;
+
 		add_stat_sample(&ts->iops_stat[ddir], iops);
 
 		if (td->iops_log)