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yaml --- r: 146161 b: refs/heads/master c: d988ff9 h: refs/heads/master i: 146159: 481e1bf v: v3
git-mirror · May 11, 2009 · 9b3b41d · 9b3b41d
1 parent 0441990
commit 9b3b41d
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5a772b2b3c68e7e0b503c5a48469113bb0634314
+refs/heads/master: d988ff94c1074c4c914235c8591bcceafb585ecf
diff --git a/trunk/kernel/trace/ring_buffer_benchmark.c b/trunk/kernel/trace/ring_buffer_benchmark.c
@@ -294,6 +294,12 @@ static void ring_buffer_producer(void)
 
 		pr_info("Total iterations per millisec: %ld\n", hit + missed);
 
+		/* it is possible that hit + missed will overflow and be zero */
+		if (!(hit + missed)) {
+			pr_info("hit + missed overflowed and totalled zero!\n");
+			hit--; /* make it non zero */
+		}
+
 		/* Caculate the average time in nanosecs */
 		avg = NSEC_PER_MSEC / (hit + missed);
 		pr_info("%ld ns per entry\n", avg);