From 3847ce32aea9fdf56022de132000e8cf139042eb Mon Sep 17 00:00:00 2001
From: Satoru Moriya <satoru.moriya@hds.com>
Date: Fri, 17 Jun 2011 12:00:03 +0000
Subject: core: add tracepoints for queueing skb to rcvbuf

This patch adds 2 tracepoints to get a status of a socket receive queue
and related parameter.

One tracepoint is added to sock_queue_rcv_skb. It records rcvbuf size
and its usage. The other tracepoint is added to __sk_mem_schedule and
it records limitations of memory for sockets and current usage.

By using these tracepoints we're able to know detailed reason why kernel
drop the packet.

Signed-off-by: Satoru Moriya <satoru.moriya@hds.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/core/net-traces.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'net/core/net-traces.c')

diff --git a/net/core/net-traces.c b/net/core/net-traces.c
index 13aab64520ad..52380b1d552a 100644
--- a/net/core/net-traces.c
+++ b/net/core/net-traces.c
@@ -28,6 +28,7 @@
 #include <trace/events/skb.h>
 #include <trace/events/net.h>
 #include <trace/events/napi.h>
+#include <trace/events/sock.h>
 #include <trace/events/udp.h>
 
 EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb);
-- 
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