diff options
| author | Chuck Lever | 2019-10-09 12:58:14 -0400 |
|---|---|---|
| committer | Anna Schumaker | 2019-10-24 10:30:39 -0400 |
| commit | bf7ca707ae60045342e145c88a83bbe00f66775f (patch) | |
| tree | 1ac54b9b5e925c3811e8b8f805fa836b993364b0 /include/trace | |
| parent | 5cd8b0d4dd96eece89f0b4ad623028057edd3245 (diff) | |
SUNRPC: Add trace points to observe transport congestion control
To help debug problems with RPC/RDMA credit management, replace
dprintk() call sites in the transport send lock paths with trace
events.
Similar trace points are defined for the non-congestion paths.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/sunrpc.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index ffa3c51dbb1a..378233fe5ac7 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -777,6 +777,99 @@ TRACE_EVENT(xprt_ping, __get_str(addr), __get_str(port), __entry->status) ); +DECLARE_EVENT_CLASS(xprt_writelock_event, + TP_PROTO( + const struct rpc_xprt *xprt, const struct rpc_task *task + ), + + TP_ARGS(xprt, task), + + TP_STRUCT__entry( + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(unsigned int, snd_task_id) + ), + + TP_fast_assign( + if (task) { + __entry->task_id = task->tk_pid; + __entry->client_id = task->tk_client ? + task->tk_client->cl_clid : -1; + } else { + __entry->task_id = -1; + __entry->client_id = -1; + } + __entry->snd_task_id = xprt->snd_task ? + xprt->snd_task->tk_pid : -1; + ), + + TP_printk("task:%u@%u snd_task:%u", + __entry->task_id, __entry->client_id, + __entry->snd_task_id) +); + +#define DEFINE_WRITELOCK_EVENT(name) \ + DEFINE_EVENT(xprt_writelock_event, xprt_##name, \ + TP_PROTO( \ + const struct rpc_xprt *xprt, \ + const struct rpc_task *task \ + ), \ + TP_ARGS(xprt, task)) + +DEFINE_WRITELOCK_EVENT(reserve_xprt); +DEFINE_WRITELOCK_EVENT(release_xprt); + +DECLARE_EVENT_CLASS(xprt_cong_event, + TP_PROTO( + const struct rpc_xprt *xprt, const struct rpc_task *task + ), + + TP_ARGS(xprt, task), + + TP_STRUCT__entry( + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(unsigned int, snd_task_id) + __field(unsigned long, cong) + __field(unsigned long, cwnd) + __field(bool, wait) + ), + + TP_fast_assign( + if (task) { + __entry->task_id = task->tk_pid; + __entry->client_id = task->tk_client ? + task->tk_client->cl_clid : -1; + } else { + __entry->task_id = -1; + __entry->client_id = -1; + } + __entry->snd_task_id = xprt->snd_task ? + xprt->snd_task->tk_pid : -1; + __entry->cong = xprt->cong; + __entry->cwnd = xprt->cwnd; + __entry->wait = test_bit(XPRT_CWND_WAIT, &xprt->state); + ), + + TP_printk("task:%u@%u snd_task:%u cong=%lu cwnd=%lu%s", + __entry->task_id, __entry->client_id, + __entry->snd_task_id, __entry->cong, __entry->cwnd, + __entry->wait ? " (wait)" : "") +); + +#define DEFINE_CONG_EVENT(name) \ + DEFINE_EVENT(xprt_cong_event, xprt_##name, \ + TP_PROTO( \ + const struct rpc_xprt *xprt, \ + const struct rpc_task *task \ + ), \ + TP_ARGS(xprt, task)) + +DEFINE_CONG_EVENT(reserve_cong); +DEFINE_CONG_EVENT(release_cong); +DEFINE_CONG_EVENT(get_cong); +DEFINE_CONG_EVENT(put_cong); + TRACE_EVENT(xs_stream_read_data, TP_PROTO(struct rpc_xprt *xprt, ssize_t err, size_t total), |