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SUNRPC: Add trace_rpc_timeout_status()

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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>
This commit is contained in:
Chuck Lever 2020-07-08 16:09:58 -04:00 committed by Anna Schumaker
parent 6f9f17287e
commit 914cdcc78a
2 changed files with 2 additions and 1 deletions
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1
include/trace/events/sunrpc.h
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@ -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),

2
net/sunrpc/clnt.c
View File

@ -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)) {