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| author | Chuck Lever <chuck.lever@oracle.com> | 2019-11-20 16:25:52 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 13:17:21 +0200 |
| commit | 3ce5297c0b40a01e8f1e2c4bf6bc2944ec21439f (patch) | |
| tree | 1409ee53040cb52dd4af8f017c48a132d738b6db /net/sunrpc | |
| parent | 80f7667422447a146f55b26e7b453354cccdc642 (diff) | |
| download | linux-stable-3ce5297c0b40a01e8f1e2c4bf6bc2944ec21439f.tar.gz linux-stable-3ce5297c0b40a01e8f1e2c4bf6bc2944ec21439f.tar.bz2 linux-stable-3ce5297c0b40a01e8f1e2c4bf6bc2944ec21439f.zip | |
SUNRPC: Capture completion of all RPC tasks
[ Upstream commit a264abad51d8ecb7954a2f6d9f1885b38daffc74 ]
RPC tasks on the backchannel never invoke xprt_complete_rqst(), so
there is no way to report their tk_status at completion. Also, any
RPC task that exits via rpc_exit_task() before it is replied to will
also disappear without a trace.
Introduce a trace point that is symmetrical with rpc_task_begin that
captures the termination status of each RPC task.
Sample trace output for callback requests initiated on the server:
kworker/u8:12-448 [003] 127.025240: rpc_task_end: task:50@3 flags=ASYNC|DYNAMIC|SOFT|SOFTCONN|SENT runstate=RUNNING|ACTIVE status=0 action=rpc_exit_task
kworker/u8:12-448 [002] 127.567310: rpc_task_end: task:51@3 flags=ASYNC|DYNAMIC|SOFT|SOFTCONN|SENT runstate=RUNNING|ACTIVE status=0 action=rpc_exit_task
kworker/u8:12-448 [001] 130.506817: rpc_task_end: task:52@3 flags=ASYNC|DYNAMIC|SOFT|SOFTCONN|SENT runstate=RUNNING|ACTIVE status=0 action=rpc_exit_task
Odd, though, that I never see trace_rpc_task_complete, either in the
forward or backchannel. Should it be removed?
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/sched.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 987c4b1f0b17..9c79548c6847 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -824,6 +824,7 @@ rpc_reset_task_statistics(struct rpc_task *task) */ void rpc_exit_task(struct rpc_task *task) { + trace_rpc_task_end(task, task->tk_action); task->tk_action = NULL; if (task->tk_ops->rpc_count_stats) task->tk_ops->rpc_count_stats(task, task->tk_calldata); |