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drop_monitor: allow more events per second

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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>
This commit is contained in:
Eric Dumazet 2012-04-19 07:16:21 +00:00 committed by David S. Miller
parent e8195b24fe
commit bbe362be53
1 changed files with 1 additions and 0 deletions
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net/core/drop_monitor.c
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@ -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;
}
}