Commit bbe362be authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

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: default avatarEric Dumazet <edumazet@google.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e8195b24
...@@ -150,6 +150,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location) ...@@ -150,6 +150,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location)
for (i = 0; i < msg->entries; i++) { for (i = 0; i < msg->entries; i++) {
if (!memcmp(&location, msg->points[i].pc, sizeof(void *))) { if (!memcmp(&location, msg->points[i].pc, sizeof(void *))) {
msg->points[i].count++; msg->points[i].count++;
atomic_inc(&data->dm_hit_count);
goto out; goto out;
} }
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment