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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 <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2020-05-12 17:13:28 -04:00 committed by Anna Schumaker
parent 0125ecbb52
commit c509f15a58
4 changed files with 71 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

113
include/trace/events/sunrpc.h
View File

@ -14,14 +14,17 @@
#include <linux/net.h>
#include <linux/tracepoint.h>
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"}, \

4
net/sunrpc/clnt.c
View File

@ -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,

4
net/sunrpc/svc_xprt.c
View File

@ -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);

2
net/sunrpc/xprt.c
View File

@ -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) {