t/btrace2fio: fix divide-by-zero in rate calculation

[fio.git] / t / btrace2fio.c

diff --git a/t/btrace2fio.c b/t/btrace2fio.c
index bf67ed0a183ac5cbd08854087e068f37355d399b..efe25c4c1100b394bc317ad808a575b0a59556fd 100644 (file)
--- a/t/btrace2fio.c
+++ b/t/btrace2fio.c
@@ -546,11 +546,15 @@ static unsigned long o_to_kb_rate(struct btrace_out *o, int rw)
        uint64_t usec = (o->last_ttime[rw] - o->first_ttime[rw]) / 1000ULL;
        uint64_t val;
 
+       if (!usec)
+               return 0;
+
+       usec /= 1000;
        if (!usec)
                return 0;
 
        val = o->kb[rw] * 1000ULL;
-       return val / (usec / 1000ULL);
+       return val / usec;
 }
 
 static uint64_t o_first_ttime(struct btrace_out *o)