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authorNeil Horman <nhorman@tuxdriver.com>2009-08-13 05:19:44 +0000
committerDavid S. Miller <davem@davemloft.net>2009-08-13 16:26:14 -0700
commite9b3cc1b3779fe10a80de4c3e7404bd308d0eae3 (patch)
tree3c6c8ea0fd37a2d26eb7d06f2ce29baf98503702 /net/core
parent1e5053b7635c6a985a7cd8108e538883d961de2a (diff)
downloadop-kernel-dev-e9b3cc1b3779fe10a80de4c3e7404bd308d0eae3.zip
op-kernel-dev-e9b3cc1b3779fe10a80de4c3e7404bd308d0eae3.tar.gz
net: skb ftracer - add tracepoint to skb_copy_datagram_iovec (v3)
skb allocation / cosumption tracer - Add consumption tracepoint This patch adds a tracepoint to skb_copy_datagram_iovec, which is called each time a userspace process copies a frame from a socket receive queue to a user space buffer. It allows us to hook in and examine each sk_buff that the system receives on a per-socket bases, and can be use to compile a list of which skb's were received by which processes. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> include/trace/events/skb.h | 20 ++++++++++++++++++++ net/core/datagram.c | 3 +++ 2 files changed, 23 insertions(+) Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/datagram.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c
index b0fe692..1c6cf3a 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -55,6 +55,7 @@
#include <net/checksum.h>
#include <net/sock.h>
#include <net/tcp_states.h>
+#include <trace/events/skb.h>
/*
* Is a socket 'connection oriented' ?
@@ -284,6 +285,8 @@ int skb_copy_datagram_iovec(const struct sk_buff *skb, int offset,
int i, copy = start - offset;
struct sk_buff *frag_iter;
+ trace_skb_copy_datagram_iovec(skb, len);
+
/* Copy header. */
if (copy > 0) {
if (copy > len)
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