new file mode 100644
@@ -0,0 +1,26 @@
+#ifndef _TRACE_SOCKET_H
+#define _TRACE_SOCKET_H
+
+#include <net/sock.h>
+#include <linux/tracepoint.h>
+
+DECLARE_TRACE(socket_sendmsg,
+ TPPROTO(struct socket *sock, struct msghdr *msg, size_t size, int ret),
+ TPARGS(sock, msg, size, ret));
+DECLARE_TRACE(socket_recvmsg,
+ TPPROTO(struct socket *sock, struct msghdr *msg, size_t size, int flags,
+ int ret),
+ TPARGS(sock, msg, size, flags, ret));
+DECLARE_TRACE(socket_create,
+ TPPROTO(struct socket *sock, int fd),
+ TPARGS(sock, fd));
+/*
+ * socket_call
+ *
+ * TODO : This tracepoint should be expanded to cover each element of the
+ * switch in sys_socketcall().
+ */
+DECLARE_TRACE(socket_call,
+ TPPROTO(int call, unsigned long a0),
+ TPARGS(call, a0));
+#endif
@@ -95,6 +95,7 @@
#include <net/sock.h>
#include <linux/netfilter.h>
+#include <trace/socket.h>
static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
@@ -155,6 +156,11 @@ static const struct net_proto_family *net_families[NPROTO] __read_mostly;
static DEFINE_PER_CPU(int, sockets_in_use) = 0;
+DEFINE_TRACE(socket_sendmsg);
+DEFINE_TRACE(socket_recvmsg);
+DEFINE_TRACE(socket_create);
+DEFINE_TRACE(socket_call);
+
/*
* Support routines.
* Move socket addresses back and forth across the kernel/user
@@ -574,6 +580,7 @@ int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
ret = __sock_sendmsg(&iocb, sock, msg, size);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
+ trace_socket_sendmsg(sock, msg, size, ret);
return ret;
}
@@ -653,10 +660,12 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg,
int ret;
init_sync_kiocb(&iocb, NULL);
+
iocb.private = &siocb;
ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
+ trace_socket_recvmsg(sock, msg, size, flags, ret);
return ret;
}
@@ -1242,6 +1251,7 @@ SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
if (retval < 0)
goto out_release;
+ trace_socket_create(sock, retval);
out:
/* It may be already another descriptor 8) Not kernel problem. */
return retval;
@@ -2064,6 +2074,8 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
a0 = a[0];
a1 = a[1];
+ trace_socket_call(call, a0);
+
switch (call) {
case SYS_SOCKET:
err = sys_socket(a0, a1, a[2]);