Commit 92732376 authored by Alexander Aring's avatar Alexander Aring Committed by David Teigland
Browse files

fs: dlm: trace socket handling 



This patch adds tracepoints for dlm socket receive and send
functionality. We can use it to track how much data was send or received
to or from a specific nodeid.

Signed-off-by: default avatarAlexander Aring <aahringo@redhat.com>
Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
parent f1d3b8f9

fs/dlm/lowcomms.c

+4 −0
Original line number Diff line number Diff line
@@ -53,6 +53,8 @@ 
#include <net/sctp/sctp.h>

#include <net/ipv6.h>



#include <trace/events/dlm.h>



#include "dlm_internal.h"

#include "lowcomms.h"

#include "midcomms.h"
@@ -925,6 +927,7 @@ static int receive_from_sock(struct connection *con) 
		msg.msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL;

		ret = kernel_recvmsg(con->sock, &msg, &iov, 1, iov.iov_len,

				     msg.msg_flags);

		trace_dlm_recv(con->nodeid, ret);

		if (ret == -EAGAIN)

			break;

		else if (ret <= 0)
@@ -1411,6 +1414,7 @@ static void send_to_sock(struct connection *con) 


		ret = kernel_sendpage(con->sock, e->page, offset, len,

				      msg_flags);

		trace_dlm_send(con->nodeid, ret);

		if (ret == -EAGAIN || ret == 0) {

			if (ret == -EAGAIN &&

			    test_bit(SOCKWQ_ASYNC_NOSPACE, &con->sock->flags) &&

include/trace/events/dlm.h

+40 −0
Original line number Diff line number Diff line
@@ -214,6 +214,46 @@ TRACE_EVENT(dlm_unlock_end, 


);



TRACE_EVENT(dlm_send,



	TP_PROTO(int nodeid, int ret),



	TP_ARGS(nodeid, ret),



	TP_STRUCT__entry(

		__field(int, nodeid)

		__field(int, ret)

	),



	TP_fast_assign(

		__entry->nodeid = nodeid;

		__entry->ret = ret;

	),



	TP_printk("nodeid=%d ret=%d", __entry->nodeid, __entry->ret)



);



TRACE_EVENT(dlm_recv,



	TP_PROTO(int nodeid, int ret),



	TP_ARGS(nodeid, ret),



	TP_STRUCT__entry(

		__field(int, nodeid)

		__field(int, ret)

	),



	TP_fast_assign(

		__entry->nodeid = nodeid;

		__entry->ret = ret;

	),



	TP_printk("nodeid=%d ret=%d", __entry->nodeid, __entry->ret)



);



#endif /* if !defined(_TRACE_DLM_H) || defined(TRACE_HEADER_MULTI_READ) */



/* This part must be outside protection */