From d75e490f35601aae12c7284d3c22684c65fb8354 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sat, 29 Jul 2023 14:36:10 -0400 Subject: SUNRPC: change svc_xprt::xpt_flags bits to enum When a sequence of numbers are needed for internal-use only, an enum is typically best. The sequence will inevitably need to be changed one day, and having an enum means the developer doesn't need to think about renumbering after insertion or deletion. Such patches will be easier to review. Suggested-by: NeilBrown Signed-off-by: Chuck Lever --- include/trace/events/sunrpc.h | 53 ++++++++++++++++++++++++++++--------------- 1 file changed, 35 insertions(+), 18 deletions(-) (limited to 'include/trace') diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index 43711753616a..00db9e1fb711 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -1918,25 +1918,42 @@ TRACE_EVENT(svc_stats_latency, __get_str(procedure), __entry->execute) ); +/* + * from include/linux/sunrpc/svc_xprt.h + */ +#define SVC_XPRT_FLAG_LIST \ + svc_xprt_flag(BUSY) \ + svc_xprt_flag(CONN) \ + svc_xprt_flag(CLOSE) \ + svc_xprt_flag(DATA) \ + svc_xprt_flag(TEMP) \ + svc_xprt_flag(DEAD) \ + svc_xprt_flag(CHNGBUF) \ + svc_xprt_flag(DEFERRED) \ + svc_xprt_flag(OLD) \ + svc_xprt_flag(LISTENER) \ + svc_xprt_flag(CACHE_AUTH) \ + svc_xprt_flag(LOCAL) \ + svc_xprt_flag(KILL_TEMP) \ + svc_xprt_flag(CONG_CTRL) \ + svc_xprt_flag(HANDSHAKE) \ + svc_xprt_flag(TLS_SESSION) \ + svc_xprt_flag_end(PEER_AUTH) + +#undef svc_xprt_flag +#undef svc_xprt_flag_end +#define svc_xprt_flag(x) TRACE_DEFINE_ENUM(XPT_##x); +#define svc_xprt_flag_end(x) TRACE_DEFINE_ENUM(XPT_##x); + +SVC_XPRT_FLAG_LIST + +#undef svc_xprt_flag +#undef svc_xprt_flag_end +#define svc_xprt_flag(x) { BIT(XPT_##x), #x }, +#define svc_xprt_flag_end(x) { BIT(XPT_##x), #x } + #define show_svc_xprt_flags(flags) \ - __print_flags(flags, "|", \ - { BIT(XPT_BUSY), "BUSY" }, \ - { BIT(XPT_CONN), "CONN" }, \ - { BIT(XPT_CLOSE), "CLOSE" }, \ - { BIT(XPT_DATA), "DATA" }, \ - { BIT(XPT_TEMP), "TEMP" }, \ - { BIT(XPT_DEAD), "DEAD" }, \ - { BIT(XPT_CHNGBUF), "CHNGBUF" }, \ - { BIT(XPT_DEFERRED), "DEFERRED" }, \ - { BIT(XPT_OLD), "OLD" }, \ - { BIT(XPT_LISTENER), "LISTENER" }, \ - { BIT(XPT_CACHE_AUTH), "CACHE_AUTH" }, \ - { BIT(XPT_LOCAL), "LOCAL" }, \ - { BIT(XPT_KILL_TEMP), "KILL_TEMP" }, \ - { BIT(XPT_CONG_CTRL), "CONG_CTRL" }, \ - { BIT(XPT_HANDSHAKE), "HANDSHAKE" }, \ - { BIT(XPT_TLS_SESSION), "TLS_SESSION" }, \ - { BIT(XPT_PEER_AUTH), "PEER_AUTH" }) + __print_flags(flags, "|", SVC_XPRT_FLAG_LIST) TRACE_EVENT(svc_xprt_create_err, TP_PROTO( -- cgit v1.2.3 From 78c542f916bccafffef4f3bec9bc60d7cda548f5 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sat, 29 Jul 2023 20:58:54 -0400 Subject: SUNRPC: Add enum svc_auth_status In addition to the benefits of using an enum rather than a set of macros, we now have a named type that can improve static type checking of function return values. As part of this change, I removed a stale comment from svcauth.h; the return values from current implementations of the auth_ops::release method are all zero/negative errno, not the SVC_OK enum values as the old comment suggested. Suggested-by: NeilBrown Signed-off-by: Chuck Lever --- include/trace/events/sunrpc.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/trace') diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index 00db9e1fb711..55716b62ce91 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -1706,7 +1706,7 @@ TRACE_DEFINE_ENUM(SVC_DENIED); TRACE_DEFINE_ENUM(SVC_PENDING); TRACE_DEFINE_ENUM(SVC_COMPLETE); -#define svc_show_status(status) \ +#define show_svc_auth_status(status) \ __print_symbolic(status, \ { SVC_GARBAGE, "SVC_GARBAGE" }, \ { SVC_SYSERR, "SVC_SYSERR" }, \ @@ -1743,7 +1743,10 @@ TRACE_DEFINE_ENUM(SVC_COMPLETE); __entry->xid, __get_sockaddr(server), __get_sockaddr(client) TRACE_EVENT_CONDITION(svc_authenticate, - TP_PROTO(const struct svc_rqst *rqst, int auth_res), + TP_PROTO( + const struct svc_rqst *rqst, + enum svc_auth_status auth_res + ), TP_ARGS(rqst, auth_res), @@ -1766,7 +1769,7 @@ TRACE_EVENT_CONDITION(svc_authenticate, TP_printk(SVC_RQST_ENDPOINT_FORMAT " auth_res=%s auth_stat=%s", SVC_RQST_ENDPOINT_VARARGS, - svc_show_status(__entry->svc_status), + show_svc_auth_status(__entry->svc_status), rpc_show_auth_stat(__entry->auth_stat)) ); -- cgit v1.2.3 From 82e5d82a45741839bd9dcb6636cfcf67747a5af5 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Wed, 19 Jul 2023 15:24:42 -0400 Subject: SUNRPC: Move trace_svc_xprt_enqueue The xpt_flags field frequently changes between the time that svc_xprt_ready() grabs a copy and execution flow arrives at the tracepoint at the tail of svc_xprt_enqueue(). In fact, there's usually a sleep/wake-up in there, so those flags are almost guaranteed to be different. It would be more useful to record the exact flags that were used to decide whether the transport is ready, so move the tracepoint. Moving it means the tracepoint can't pick up the waker's pid. That can be added to struct svc_rqst if it turns out that is important. Signed-off-by: Chuck Lever --- include/trace/events/sunrpc.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/trace') diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index 55716b62ce91..6beb38c1dcb5 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -2014,25 +2014,25 @@ TRACE_EVENT(svc_xprt_create_err, TRACE_EVENT(svc_xprt_enqueue, TP_PROTO( const struct svc_xprt *xprt, - const struct svc_rqst *rqst + unsigned long flags ), - TP_ARGS(xprt, rqst), + TP_ARGS(xprt, flags), TP_STRUCT__entry( SVC_XPRT_ENDPOINT_FIELDS(xprt) - - __field(int, pid) ), TP_fast_assign( - SVC_XPRT_ENDPOINT_ASSIGNMENTS(xprt); - - __entry->pid = rqst? rqst->rq_task->pid : 0; + __assign_sockaddr(server, &xprt->xpt_local, + xprt->xpt_locallen); + __assign_sockaddr(client, &xprt->xpt_remote, + xprt->xpt_remotelen); + __entry->flags = flags; + __entry->netns_ino = xprt->xpt_net->ns.inum; ), - TP_printk(SVC_XPRT_ENDPOINT_FORMAT " pid=%d", - SVC_XPRT_ENDPOINT_VARARGS, __entry->pid) + TP_printk(SVC_XPRT_ENDPOINT_FORMAT, SVC_XPRT_ENDPOINT_VARARGS) ); TRACE_EVENT(svc_xprt_dequeue, -- cgit v1.2.3