From b20dfc3fcd6ed1e16c828c81e1fc6f4aea2cfa77 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 2 Mar 2020 15:01:08 -0500 Subject: svcrdma: Create a generic tracing class for displaying xdr_buf layout This class can be used to create trace points in either the RPC client or RPC server paths. It simply displays the length of each part of an xdr_buf, which is useful to determine that the transport and XDR codecs are operating correctly. Signed-off-by: Chuck Lever --- include/trace/events/sunrpc.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/trace/events/sunrpc.h') diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index ee993575d2fa..1577223add43 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -14,6 +14,49 @@ #include #include +DECLARE_EVENT_CLASS(xdr_buf_class, + TP_PROTO( + const struct xdr_buf *xdr + ), + + TP_ARGS(xdr), + + TP_STRUCT__entry( + __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->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("head=[%p,%zu] page=%u tail=[%p,%zu] len=%u", + __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, \ + TP_PROTO( \ + const struct xdr_buf *xdr \ + ), \ + TP_ARGS(xdr)) + +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); TRACE_DEFINE_ENUM(RPC_AUTH_REJECTEDCRED); -- cgit v1.2.3