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SUNRPC: Add more svcsock tracepoints
In addition to tracing recently-updated socket sendto events, this commit adds a trace event class that can be used for additional svcsock-related tracepoints in subsequent patches. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
parent
d998882b4b
commit
998024dee1
@ -14,6 +14,39 @@
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#include <linux/net.h>
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#include <linux/tracepoint.h>
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TRACE_DEFINE_ENUM(SOCK_STREAM);
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TRACE_DEFINE_ENUM(SOCK_DGRAM);
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TRACE_DEFINE_ENUM(SOCK_RAW);
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TRACE_DEFINE_ENUM(SOCK_RDM);
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TRACE_DEFINE_ENUM(SOCK_SEQPACKET);
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TRACE_DEFINE_ENUM(SOCK_DCCP);
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TRACE_DEFINE_ENUM(SOCK_PACKET);
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#define show_socket_type(type) \
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__print_symbolic(type, \
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{ SOCK_STREAM, "STREAM" }, \
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{ SOCK_DGRAM, "DGRAM" }, \
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{ SOCK_RAW, "RAW" }, \
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{ SOCK_RDM, "RDM" }, \
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{ SOCK_SEQPACKET, "SEQPACKET" }, \
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{ SOCK_DCCP, "DCCP" }, \
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{ SOCK_PACKET, "PACKET" })
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/* This list is known to be incomplete, add new enums as needed. */
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TRACE_DEFINE_ENUM(AF_UNSPEC);
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TRACE_DEFINE_ENUM(AF_UNIX);
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TRACE_DEFINE_ENUM(AF_LOCAL);
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TRACE_DEFINE_ENUM(AF_INET);
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TRACE_DEFINE_ENUM(AF_INET6);
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#define rpc_show_address_family(family) \
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__print_symbolic(family, \
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{ AF_UNSPEC, "AF_UNSPEC" }, \
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{ AF_UNIX, "AF_UNIX" }, \
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{ AF_LOCAL, "AF_LOCAL" }, \
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{ AF_INET, "AF_INET" }, \
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{ AF_INET6, "AF_INET6" })
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DECLARE_EVENT_CLASS(xdr_buf_class,
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TP_PROTO(
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const struct xdr_buf *xdr
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@ -1384,6 +1417,70 @@ DECLARE_EVENT_CLASS(svc_deferred_event,
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DEFINE_SVC_DEFERRED_EVENT(drop);
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DEFINE_SVC_DEFERRED_EVENT(revisit);
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TRACE_EVENT(svcsock_new_socket,
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TP_PROTO(
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const struct socket *socket
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),
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TP_ARGS(socket),
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TP_STRUCT__entry(
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__field(unsigned long, type)
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__field(unsigned long, family)
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__field(bool, listener)
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),
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TP_fast_assign(
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__entry->type = socket->type;
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__entry->family = socket->sk->sk_family;
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__entry->listener = (socket->sk->sk_state == TCP_LISTEN);
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),
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TP_printk("type=%s family=%s%s",
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show_socket_type(__entry->type),
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rpc_show_address_family(__entry->family),
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__entry->listener ? " (listener)" : ""
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)
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);
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DECLARE_EVENT_CLASS(svcsock_class,
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TP_PROTO(
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const struct svc_xprt *xprt,
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ssize_t result
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),
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TP_ARGS(xprt, result),
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TP_STRUCT__entry(
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__field(ssize_t, result)
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__field(unsigned long, flags)
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__string(addr, xprt->xpt_remotebuf)
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),
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TP_fast_assign(
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__entry->result = result;
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__entry->flags = xprt->xpt_flags;
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__assign_str(addr, xprt->xpt_remotebuf);
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),
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TP_printk("addr=%s result=%zd flags=%s", __get_str(addr),
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__entry->result, show_svc_xprt_flags(__entry->flags)
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)
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);
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#define DEFINE_SVCSOCK_EVENT(name) \
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DEFINE_EVENT(svcsock_class, svcsock_##name, \
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TP_PROTO( \
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const struct svc_xprt *xprt, \
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ssize_t result \
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), \
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TP_ARGS(xprt, result))
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DEFINE_SVCSOCK_EVENT(udp_send);
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DEFINE_SVCSOCK_EVENT(tcp_send);
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DEFINE_SVCSOCK_EVENT(data_ready);
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DEFINE_SVCSOCK_EVENT(write_space);
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DECLARE_EVENT_CLASS(cache_event,
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TP_PROTO(
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const struct cache_detail *cd,
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@ -54,6 +54,8 @@
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#include <linux/sunrpc/stats.h>
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#include <linux/sunrpc/xprt.h>
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#include <trace/events/sunrpc.h>
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#include "socklib.h"
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#include "sunrpc.h"
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@ -281,13 +283,10 @@ static void svc_data_ready(struct sock *sk)
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struct svc_sock *svsk = (struct svc_sock *)sk->sk_user_data;
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if (svsk) {
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dprintk("svc: socket %p(inet %p), busy=%d\n",
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svsk, sk,
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test_bit(XPT_BUSY, &svsk->sk_xprt.xpt_flags));
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/* Refer to svc_setup_socket() for details. */
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rmb();
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svsk->sk_odata(sk);
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trace_svcsock_data_ready(&svsk->sk_xprt, 0);
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if (!test_and_set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags))
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svc_xprt_enqueue(&svsk->sk_xprt);
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}
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@ -301,11 +300,9 @@ static void svc_write_space(struct sock *sk)
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struct svc_sock *svsk = (struct svc_sock *)(sk->sk_user_data);
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if (svsk) {
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dprintk("svc: socket %p(inet %p), write_space busy=%d\n",
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svsk, sk, test_bit(XPT_BUSY, &svsk->sk_xprt.xpt_flags));
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/* Refer to svc_setup_socket() for details. */
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rmb();
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trace_svcsock_write_space(&svsk->sk_xprt, 0);
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svsk->sk_owspace(sk);
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svc_xprt_enqueue(&svsk->sk_xprt);
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}
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@ -545,6 +542,7 @@ static int svc_udp_sendto(struct svc_rqst *rqstp)
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err = xprt_sock_sendmsg(svsk->sk_sock, &msg, xdr, 0, 0, &sent);
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xdr_free_bvec(xdr);
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}
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trace_svcsock_udp_send(xprt, err);
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mutex_unlock(&xprt->xpt_mutex);
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if (err < 0)
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@ -616,7 +614,7 @@ static struct svc_xprt_class svc_udp_class = {
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static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv)
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{
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int err, level, optname, one = 1;
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int level, optname, one = 1;
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svc_xprt_init(sock_net(svsk->sk_sock->sk), &svc_udp_class,
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&svsk->sk_xprt, serv);
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@ -647,9 +645,8 @@ static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv)
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default:
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BUG();
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}
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err = kernel_setsockopt(svsk->sk_sock, level, optname,
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(char *)&one, sizeof(one));
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dprintk("svc: kernel_setsockopt returned %d\n", err);
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kernel_setsockopt(svsk->sk_sock, level, optname, (char *)&one,
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sizeof(one));
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}
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/*
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@ -1100,6 +1097,7 @@ static int svc_tcp_sendto(struct svc_rqst *rqstp)
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goto out_notconn;
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err = xprt_sock_sendmsg(svsk->sk_sock, &msg, xdr, 0, marker, &sent);
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xdr_free_bvec(xdr);
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trace_svcsock_tcp_send(xprt, err < 0 ? err : sent);
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if (err < 0 || sent != (xdr->len + sizeof(marker)))
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goto out_close;
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mutex_unlock(&xprt->xpt_mutex);
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@ -1170,13 +1168,11 @@ static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv)
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set_bit(XPT_CACHE_AUTH, &svsk->sk_xprt.xpt_flags);
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set_bit(XPT_CONG_CTRL, &svsk->sk_xprt.xpt_flags);
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if (sk->sk_state == TCP_LISTEN) {
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dprintk("setting up TCP socket for listening\n");
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strcpy(svsk->sk_xprt.xpt_remotebuf, "listener");
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set_bit(XPT_LISTENER, &svsk->sk_xprt.xpt_flags);
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sk->sk_data_ready = svc_tcp_listen_data_ready;
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set_bit(XPT_CONN, &svsk->sk_xprt.xpt_flags);
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} else {
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dprintk("setting up TCP socket for reading\n");
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sk->sk_state_change = svc_tcp_state_change;
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sk->sk_data_ready = svc_data_ready;
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sk->sk_write_space = svc_write_space;
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@ -1226,7 +1222,6 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
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int pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
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int err = 0;
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dprintk("svc: svc_setup_socket %p\n", sock);
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svsk = kzalloc(sizeof(*svsk), GFP_KERNEL);
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if (!svsk)
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return ERR_PTR(-ENOMEM);
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@ -1263,12 +1258,7 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
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else
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svc_tcp_init(svsk, serv);
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dprintk("svc: svc_setup_socket created %p (inet %p), "
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"listen %d close %d\n",
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svsk, svsk->sk_sk,
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test_bit(XPT_LISTENER, &svsk->sk_xprt.xpt_flags),
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test_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags));
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trace_svcsock_new_socket(sock);
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return svsk;
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}
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