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SUNRPC: Adding status trace points 

This patch adds three trace points to the status routines
in the sunrpc state machine.

The goal of these trace points is to give an Admin
the ability to check on binding status or connection
status to see if there is a potential problem.

Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Steve Dickson 2012-02-06 10:08:08 -05:00 committed by Trond Myklebust
parent 85c0d24f02
commit 5753cba176
2 changed files with 57 additions and 0 deletions
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53
include/trace/events/sunrpc.h
View File

@ -8,6 +8,59 @@
#include <linux/sunrpc/clnt.h>
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(rpc_task_status,
TP_PROTO(struct rpc_task *task),
TP_ARGS(task),
TP_STRUCT__entry(
__field(const struct rpc_task *, task)
__field(const struct rpc_clnt *, clnt)
__field(int, status)
),
TP_fast_assign(
__entry->task = task;
__entry->clnt = task->tk_client;
__entry->status = task->tk_status;
),
TP_printk("task:%p@%p, status %d",__entry->task, __entry->clnt, __entry->status)
);
DEFINE_EVENT(rpc_task_status, rpc_call_status,
TP_PROTO(struct rpc_task *task),
TP_ARGS(task)
);
DEFINE_EVENT(rpc_task_status, rpc_bind_status,
TP_PROTO(struct rpc_task *task),
TP_ARGS(task)
);
TRACE_EVENT(rpc_connect_status,
TP_PROTO(struct rpc_task *task, int status),
TP_ARGS(task, status),
TP_STRUCT__entry(
__field(const struct rpc_task *, task)
__field(const struct rpc_clnt *, clnt)
__field(int, status)
),
TP_fast_assign(
__entry->task = task;
__entry->clnt = task->tk_client;
__entry->status = status;
),
TP_printk("task:%p@%p, status %d",__entry->task, __entry->clnt, __entry->status)
);
DECLARE_EVENT_CLASS(rpc_task_running,
TP_PROTO(const struct rpc_clnt *clnt, const struct rpc_task *task, const void *action),

4
net/sunrpc/clnt.c
View File

@ -36,6 +36,7 @@
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/sunrpc/metrics.h>
#include <linux/sunrpc/bc_xprt.h>
#include <trace/events/sunrpc.h>
#include "sunrpc.h"
#include "netns.h"
@ -1247,6 +1248,7 @@ call_bind_status(struct rpc_task *task)
return;
}
trace_rpc_bind_status(task);
switch (task->tk_status) {
case -ENOMEM:
dprintk("RPC: %5u rpcbind out of memory\n", task->tk_pid);
@ -1346,6 +1348,7 @@ call_connect_status(struct rpc_task *task)
return;
}
trace_rpc_connect_status(task, status);
switch (status) {
/* if soft mounted, test if we've timed out */
case -ETIMEDOUT:
@ -1534,6 +1537,7 @@ call_status(struct rpc_task *task)
return;
}
trace_rpc_call_status(task);
task->tk_status = 0;
switch(status) {
case -EHOSTDOWN: