drop_monitor: allow more events per second

It seems there is a logic error in trace_drop_common(), since we store only 64 drops, even if they are from same location. This fix is a one liner, but we probably need more work to avoid useless atomic dec/inc Now I can watch 1 Mpps drops through dropwatch... Signed-off-by: Eric Dumazet <[email protected]> Cc: Neil Horman <[email protected]> Acked-by: Neil Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
kyagi · Apr 21, 2012 · bbe362b · bbe362b
1 parent e8195b2
commit bbe362b
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
@@ -150,6 +150,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location)
 	for (i = 0; i < msg->entries; i++) {
 		if (!memcmp(&location, msg->points[i].pc, sizeof(void *))) {
 			msg->points[i].count++;
+			atomic_inc(&data->dm_hit_count);
 			goto out;
 		}
 	}