From c509f15a5801605652126831d965751e8d602471 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 12 May 2020 17:13:28 -0400 Subject: [PATCH] SUNRPC: Split the xdr_buf event class To help tie the recorded xdr_buf to a particular RPC transaction, the client side version of this class should display task ID information and the server side one should show the request's XID. Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker --- include/trace/events/sunrpc.h | 113 ++++++++++++++++++++-------------- net/sunrpc/clnt.c | 4 +- net/sunrpc/svc_xprt.c | 4 +- net/sunrpc/xprt.c | 2 +- 4 files changed, 71 insertions(+), 52 deletions(-) diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index f1fd3fae5b0f..4747803b370e 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -14,14 +14,17 @@ #include #include -DECLARE_EVENT_CLASS(xdr_buf_class, +DECLARE_EVENT_CLASS(rpc_xdr_buf_class, TP_PROTO( + const struct rpc_task *task, const struct xdr_buf *xdr ), - TP_ARGS(xdr), + TP_ARGS(task, xdr), TP_STRUCT__entry( + __field(unsigned int, task_id) + __field(unsigned int, client_id) __field(const void *, head_base) __field(size_t, head_len) __field(const void *, tail_base) @@ -31,6 +34,8 @@ DECLARE_EVENT_CLASS(xdr_buf_class, ), TP_fast_assign( + __entry->task_id = task->tk_pid; + __entry->client_id = task->tk_client->cl_clid; __entry->head_base = xdr->head[0].iov_base; __entry->head_len = xdr->head[0].iov_len; __entry->tail_base = xdr->tail[0].iov_base; @@ -39,23 +44,26 @@ DECLARE_EVENT_CLASS(xdr_buf_class, __entry->msg_len = xdr->len; ), - TP_printk("head=[%p,%zu] page=%u tail=[%p,%zu] len=%u", + TP_printk("task:%u@%u head=[%p,%zu] page=%u tail=[%p,%zu] len=%u", + __entry->task_id, __entry->client_id, __entry->head_base, __entry->head_len, __entry->page_len, __entry->tail_base, __entry->tail_len, __entry->msg_len ) ); -#define DEFINE_XDRBUF_EVENT(name) \ - DEFINE_EVENT(xdr_buf_class, name, \ +#define DEFINE_RPCXDRBUF_EVENT(name) \ + DEFINE_EVENT(rpc_xdr_buf_class, \ + rpc_xdr_##name, \ TP_PROTO( \ + const struct rpc_task *task, \ const struct xdr_buf *xdr \ ), \ - TP_ARGS(xdr)) + TP_ARGS(task, xdr)) + +DEFINE_RPCXDRBUF_EVENT(sendto); +DEFINE_RPCXDRBUF_EVENT(recvfrom); +DEFINE_RPCXDRBUF_EVENT(reply_pages); -DEFINE_XDRBUF_EVENT(xprt_sendto); -DEFINE_XDRBUF_EVENT(xprt_recvfrom); -DEFINE_XDRBUF_EVENT(svc_recvfrom); -DEFINE_XDRBUF_EVENT(svc_sendto); TRACE_DEFINE_ENUM(RPC_AUTH_OK); TRACE_DEFINE_ENUM(RPC_AUTH_BADCRED); @@ -560,43 +568,6 @@ TRACE_EVENT(rpc_xdr_alignment, ) ); -TRACE_EVENT(rpc_reply_pages, - TP_PROTO( - const struct rpc_rqst *req - ), - - TP_ARGS(req), - - TP_STRUCT__entry( - __field(unsigned int, task_id) - __field(unsigned int, client_id) - __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) - ), - - TP_fast_assign( - __entry->task_id = req->rq_task->tk_pid; - __entry->client_id = req->rq_task->tk_client->cl_clid; - - __entry->head_base = req->rq_rcv_buf.head[0].iov_base; - __entry->head_len = req->rq_rcv_buf.head[0].iov_len; - __entry->page_len = req->rq_rcv_buf.page_len; - __entry->tail_base = req->rq_rcv_buf.tail[0].iov_base; - __entry->tail_len = req->rq_rcv_buf.tail[0].iov_len; - ), - - TP_printk( - "task:%u@%u xdr=[%p,%zu]/%u/[%p,%zu]\n", - __entry->task_id, __entry->client_id, - __entry->head_base, __entry->head_len, - __entry->page_len, - __entry->tail_base, __entry->tail_len - ) -); - /* * First define the enums in the below macros to be exported to userspace * via TRACE_DEFINE_ENUM(). @@ -1024,6 +995,54 @@ TRACE_EVENT(xs_stream_read_request, __entry->copied, __entry->reclen, __entry->offset) ); + +DECLARE_EVENT_CLASS(svc_xdr_buf_class, + TP_PROTO( + const struct svc_rqst *rqst, + const struct xdr_buf *xdr + ), + + TP_ARGS(rqst, xdr), + + TP_STRUCT__entry( + __field(u32, xid) + __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, msg_len) + ), + + TP_fast_assign( + __entry->xid = be32_to_cpu(rqst->rq_xid); + __entry->head_base = xdr->head[0].iov_base; + __entry->head_len = xdr->head[0].iov_len; + __entry->tail_base = xdr->tail[0].iov_base; + __entry->tail_len = xdr->tail[0].iov_len; + __entry->page_len = xdr->page_len; + __entry->msg_len = xdr->len; + ), + + TP_printk("xid=0x%08x head=[%p,%zu] page=%u tail=[%p,%zu] len=%u", + __entry->xid, + __entry->head_base, __entry->head_len, __entry->page_len, + __entry->tail_base, __entry->tail_len, __entry->msg_len + ) +); + +#define DEFINE_SVCXDRBUF_EVENT(name) \ + DEFINE_EVENT(svc_xdr_buf_class, \ + svc_xdr_##name, \ + TP_PROTO( \ + const struct svc_rqst *rqst, \ + const struct xdr_buf *xdr \ + ), \ + TP_ARGS(rqst, xdr)) + +DEFINE_SVCXDRBUF_EVENT(recvfrom); +DEFINE_SVCXDRBUF_EVENT(sendto); + #define show_rqstp_flags(flags) \ __print_flags(flags, "|", \ { (1UL << RQ_SECURE), "RQ_SECURE"}, \ diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 2621258bd8fc..0e684d93c9b1 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -1270,7 +1270,7 @@ void rpc_prepare_reply_pages(struct rpc_rqst *req, struct page **pages, hdrsize += RPC_REPHDRSIZE + req->rq_cred->cr_auth->au_ralign - 1; xdr_inline_pages(&req->rq_rcv_buf, hdrsize << 2, pages, base, len); - trace_rpc_reply_pages(req); + trace_rpc_xdr_reply_pages(req->rq_task, &req->rq_rcv_buf); } EXPORT_SYMBOL_GPL(rpc_prepare_reply_pages); @@ -2532,7 +2532,7 @@ call_decode(struct rpc_task *task) goto out; req->rq_rcv_buf.len = req->rq_private_buf.len; - trace_xprt_recvfrom(&req->rq_rcv_buf); + trace_rpc_xdr_recvfrom(task, &req->rq_rcv_buf); /* Check that the softirq receive buffer is valid */ WARN_ON(memcmp(&req->rq_rcv_buf, &req->rq_private_buf, diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 2284ff038dad..8ef44275c255 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -812,7 +812,7 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt) else len = xprt->xpt_ops->xpo_recvfrom(rqstp); if (len > 0) - trace_svc_recvfrom(&rqstp->rq_arg); + trace_svc_xdr_recvfrom(rqstp, &rqstp->rq_arg); rqstp->rq_stime = ktime_get(); rqstp->rq_reserved = serv->sv_max_mesg; atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved); @@ -913,7 +913,7 @@ int svc_send(struct svc_rqst *rqstp) xb->len = xb->head[0].iov_len + xb->page_len + xb->tail[0].iov_len; - trace_svc_sendto(xb); + trace_svc_xdr_sendto(rqstp, xb); /* Grab mutex to serialize outgoing data. */ mutex_lock(&xprt->xpt_mutex); diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 493a30a296fc..053de053a024 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1460,7 +1460,7 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task) */ req->rq_ntrans++; - trace_xprt_sendto(&req->rq_snd_buf); + trace_rpc_xdr_sendto(task, &req->rq_snd_buf); connect_cookie = xprt->connect_cookie; status = xprt->ops->send_request(req); if (status != 0) {