Commit 914cdcc7 authored Jul 08, 2020 by Chuck Lever Committed by Anna Schumaker Sep 21, 2020

SUNRPC: Add trace_rpc_timeout_status()



For a long while we've wanted a tracepoint that fires when a major
timeout is reported in the system log. Such a tracepoint can be
attached to other actions that can take place when a timeout is
detected (eg, server or connection health assessment).

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

parent 6f9f1728

include/trace/events/sunrpc.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -261,6 +261,7 @@ DECLARE_EVENT_CLASS(rpc_task_status,
		DEFINE_RPC_STATUS_EVENT(call);
		DEFINE_RPC_STATUS_EVENT(bind);
		DEFINE_RPC_STATUS_EVENT(connect);
		DEFINE_RPC_STATUS_EVENT(timeout);

		TRACE_EVENT(rpc_request,
		TP_PROTO(const struct rpc_task *task),

net/sunrpc/clnt.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2398,7 +2398,7 @@ rpc_check_timeout(struct rpc_task *task)
		if (xprt_adjust_timeout(task->tk_rqstp) == 0)
		return;

		dprintk("RPC: %5u call_timeout (major)\n", task->tk_pid);
		trace_rpc_timeout_status(task);
		task->tk_timeouts++;

		if (RPC_IS_SOFTCONN(task) && !rpc_check_connected(task->tk_rqstp)) {