diff options
author | Chuck Lever <chuck.lever@oracle.com> | 2019-02-11 11:24:10 -0500 |
---|---|---|
committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-02-13 11:32:45 -0500 |
commit | 5582863f450ca44c472dbf4812a62f4e0e68b0c8 (patch) | |
tree | 858903c10475686c0c203d61bc8f1b41e9c472cc /include/trace | |
parent | 0ccc61b1c76e5163c6fea6cf83bd18e7ea244c5b (diff) | |
download | linux-5582863f450ca44c472dbf4812a62f4e0e68b0c8.tar.bz2 |
SUNRPC: Add XDR overflow trace event
This can help field troubleshooting without needing the overhead of
a full network capture (ie, tcpdump).
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 | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index f88b0f52aa7e..fbc41b8142d3 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -254,6 +254,73 @@ TRACE_EVENT(rpc_stats_latency, __entry->backlog, __entry->rtt, __entry->execute) ); +TRACE_EVENT(rpc_xdr_overflow, + TP_PROTO( + const struct xdr_stream *xdr, + size_t requested + ), + + TP_ARGS(xdr, requested), + + TP_STRUCT__entry( + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(int, version) + __field(size_t, requested) + __field(const void *, end) + __field(const void *, p) + __field(const void *, head_base) + __field(size_t, head_len) + __field(const void *, tail_base) + __field(size_t, tail_len) + __field(unsigned int, page_len) + __field(unsigned int, len) + __string(progname, + xdr->rqst->rq_task->tk_client->cl_program->name) + __string(procedure, + xdr->rqst->rq_task->tk_msg.rpc_proc->p_name) + ), + + TP_fast_assign( + if (xdr->rqst) { + const struct rpc_task *task = xdr->rqst->rq_task; + + __entry->task_id = task->tk_pid; + __entry->client_id = task->tk_client->cl_clid; + __assign_str(progname, + task->tk_client->cl_program->name) + __entry->version = task->tk_client->cl_vers; + __assign_str(procedure, task->tk_msg.rpc_proc->p_name) + } else { + __entry->task_id = 0; + __entry->client_id = 0; + __assign_str(progname, "unknown") + __entry->version = 0; + __assign_str(procedure, "unknown") + } + __entry->requested = requested; + __entry->end = xdr->end; + __entry->p = xdr->p; + __entry->head_base = xdr->buf->head[0].iov_base, + __entry->head_len = xdr->buf->head[0].iov_len, + __entry->page_len = xdr->buf->page_len, + __entry->tail_base = xdr->buf->tail[0].iov_base, + __entry->tail_len = xdr->buf->tail[0].iov_len, + __entry->len = xdr->buf->len; + ), + + TP_printk( + "task:%u@%u %sv%d %s requested=%zu p=%p end=%p xdr=[%p,%zu]/%u/[%p,%zu]/%u\n", + __entry->task_id, __entry->client_id, + __get_str(progname), __entry->version, __get_str(procedure), + __entry->requested, __entry->p, __entry->end, + __entry->head_base, __entry->head_len, + __entry->page_len, + __entry->tail_base, __entry->tail_len, + __entry->len + ) +); + /* * First define the enums in the below macros to be exported to userspace * via TRACE_DEFINE_ENUM(). |