SUNRPC: Capture signalled RPC tasks

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

diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index 8c73ffb..ee99357 100644 (file)
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -185,6 +185,7 @@ DECLARE_EVENT_CLASS(rpc_task_running,
 DEFINE_RPC_RUNNING_EVENT(begin);
 DEFINE_RPC_RUNNING_EVENT(run_action);
 DEFINE_RPC_RUNNING_EVENT(complete);
+DEFINE_RPC_RUNNING_EVENT(signalled);
 DEFINE_RPC_RUNNING_EVENT(end);
 
 DECLARE_EVENT_CLASS(rpc_task_queued,

diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 9c79548..55e9002 100644 (file)
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -846,6 +846,8 @@ void rpc_signal_task(struct rpc_task *task)
 
        if (!RPC_IS_ACTIVATED(task))
                return;
+
+       trace_rpc_task_signalled(task, task->tk_action);
        set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate);
        smp_mb__after_atomic();
        queue = READ_ONCE(task->tk_waitqueue);
@@ -949,7 +951,7 @@ static void __rpc_execute(struct rpc_task *task)
                         * clean up after sleeping on some queue, we don't
                         * break the loop here, but go around once more.
                         */
-                       dprintk("RPC: %5u got signal\n", task->tk_pid);
+                       trace_rpc_task_signalled(task, task->tk_action);
                        set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate);
                        task->tk_rpc_status = -ERESTARTSYS;
                        rpc_exit(task, -ERESTARTSYS);