Commit bbe362be authored Apr 19, 2012 by Eric Dumazet Committed by David S. Miller Apr 21, 2012

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 <edumazet@google.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent e8195b24

net/core/drop_monitor.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}
		}