[net-next,09/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_peer tracing

Message ID	166919805493.1256245.11887062843285179164.stgit@warthog.procyon.org.uk (mailing list archive)
State	Not Applicable
Delegated to:	Netdev Maintainers
Headers	show Return-Path: <netdev-owner@kernel.org> Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH net-next 09/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_peer tracing From: David Howells <dhowells@redhat.com> To: netdev@vger.kernel.org Cc: Marc Dionne <marc.dionne@auristor.com>, linux-afs@lists.infradead.org, dhowells@redhat.com, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org Date: Wed, 23 Nov 2022 10:07:34 +0000 Message-ID: <166919805493.1256245.11887062843285179164.stgit@warthog.procyon.org.uk> In-Reply-To: <166919798040.1256245.11495568684139066955.stgit@warthog.procyon.org.uk> References: <166919798040.1256245.11495568684139066955.stgit@warthog.procyon.org.uk> User-Agent: StGit/1.5 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk
Series	rxrpc: Increasing SACK size and moving away from softirq, part 2 \| expand [net-next,00/13] rxrpc: Increasing SACK size and moving away from softirq, part 2 [net-next,01/13] rxrpc: Implement an in-kernel rxperf server for testing purposes [net-next,02/13] rxrpc: Remove decl for rxrpc_kernel_call_is_complete() [net-next,03/13] rxrpc: Remove handling of duplicate packets in recvmsg_queue [net-next,04/13] rxrpc: Remove the [k_]proto() debugging macros [net-next,05/13] rxrpc: Remove the [_k]net() debugging macros [net-next,06/13] rxrpc: Drop rxrpc_conn_parameters from rxrpc_connection and rxrpc_bundle [net-next,07/13] rxrpc: Extract the code from a received ABORT packet much earlier [net-next,08/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_local tracing [net-next,09/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_peer tracing [net-next,10/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_conn tracing [net-next,11/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_call tracing [net-next,12/13] rxrpc: Trace rxrpc_bundle refcount [net-next,13/13] rxrpc: trace: Don't use __builtin_return_address for sk_buff tracing

Context	Check	Description
netdev/tree_selection	success	Clearly marked for net-next, async
netdev/apply	fail	Patch does not apply to net-next

diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h index 015569845b1d..1c74143a51c1 100644 --- a/include/trace/events/rxrpc.h +++ b/include/trace/events/rxrpc.h @@ -63,10 +63,23 @@ E_(rxrpc_local_use_work, "USE work ") #define rxrpc_peer_traces \ - EM(rxrpc_peer_got, "GOT") \ - EM(rxrpc_peer_new, "NEW") \ - EM(rxrpc_peer_processing, "PRO") \ - E_(rxrpc_peer_put, "PUT") + EM(rxrpc_peer_free, "FREE ") \ + EM(rxrpc_peer_get_accept, "GET accept ") \ + EM(rxrpc_peer_get_activate_call, "GET act-call") \ + EM(rxrpc_peer_get_bundle, "GET bundle ") \ + EM(rxrpc_peer_get_client_conn, "GET cln-conn") \ + EM(rxrpc_peer_get_input_error, "GET inpt-err") \ + EM(rxrpc_peer_get_keepalive, "GET keepaliv") \ + EM(rxrpc_peer_get_lookup_client, "GET look-cln") \ + EM(rxrpc_peer_get_service_conn, "GET srv-conn") \ + EM(rxrpc_peer_new_client, "NEW client ") \ + EM(rxrpc_peer_new_prealloc, "NEW prealloc") \ + EM(rxrpc_peer_put_bundle, "PUT bundle ") \ + EM(rxrpc_peer_put_call, "PUT call ") \ + EM(rxrpc_peer_put_conn, "PUT conn ") \ + EM(rxrpc_peer_put_discard_tmp, "PUT disc-tmp") \ + EM(rxrpc_peer_put_input_error, "PUT inpt-err") \ + E_(rxrpc_peer_put_keepalive, "PUT keepaliv") #define rxrpc_conn_traces \ EM(rxrpc_conn_got, "GOT") \ @@ -394,30 +407,26 @@ TRACE_EVENT(rxrpc_local, ); TRACE_EVENT(rxrpc_peer, - TP_PROTO(unsigned int peer_debug_id, enum rxrpc_peer_trace op, - int usage, const void *where), + TP_PROTO(unsigned int peer_debug_id, int ref, enum rxrpc_peer_trace why), - TP_ARGS(peer_debug_id, op, usage, where), + TP_ARGS(peer_debug_id, ref, why), TP_STRUCT__entry( __field(unsigned int, peer ) - __field(int, op ) - __field(int, usage ) - __field(const void *, where ) + __field(int, ref ) + __field(int, why ) ), TP_fast_assign( __entry->peer = peer_debug_id; - __entry->op = op; - __entry->usage = usage; - __entry->where = where; + __entry->ref = ref; + __entry->why = why; ), - TP_printk("P=%08x %s u=%d sp=%pSR", + TP_printk("P=%08x %s r=%d", __entry->peer, - __print_symbolic(__entry->op, rxrpc_peer_traces), - __entry->usage, - __entry->where) + __print_symbolic(__entry->why, rxrpc_peer_traces), + __entry->ref) ); TRACE_EVENT(rxrpc_conn, diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c index 989ebca899f3..7a0dc01741e7 100644 --- a/net/rxrpc/af_rxrpc.c +++ b/net/rxrpc/af_rxrpc.c @@ -328,7 +328,7 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock, mutex_unlock(&call->user_mutex); } - rxrpc_put_peer(cp.peer); + rxrpc_put_peer(cp.peer, rxrpc_peer_put_discard_tmp); _leave(" = %p", call); return call; } diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index dde9ce21ef48..6cb111e9761c 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -1063,14 +1063,15 @@ struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, const struct sockaddr_rxrpc *); struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *, struct sockaddr_rxrpc *, gfp_t); -struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); +struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t, + enum rxrpc_peer_trace); void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *, struct rxrpc_peer *); void rxrpc_destroy_all_peers(struct rxrpc_net *); -struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); -struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); -void rxrpc_put_peer(struct rxrpc_peer *); -void rxrpc_put_peer_locked(struct rxrpc_peer *); +struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); +struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *, enum rxrpc_peer_trace); +void rxrpc_put_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); +void rxrpc_put_peer_locked(struct rxrpc_peer *, enum rxrpc_peer_trace); /* * proc.c diff --git a/net/rxrpc/call_accept.c b/net/rxrpc/call_accept.c index 1b12d4e28373..f6bc3b07c3e5 100644 --- a/net/rxrpc/call_accept.c +++ b/net/rxrpc/call_accept.c @@ -70,7 +70,9 @@ static int rxrpc_service_prealloc_one(struct rxrpc_sock *rx, head = b->peer_backlog_head; tail = READ_ONCE(b->peer_backlog_tail); if (CIRC_CNT(head, tail, size) < max) { - struct rxrpc_peer *peer = rxrpc_alloc_peer(rx->local, gfp); + struct rxrpc_peer *peer; + + peer = rxrpc_alloc_peer(rx->local, gfp, rxrpc_peer_new_prealloc); if (!peer) return -ENOMEM; b->peer_backlog[head] = peer; @@ -286,7 +288,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx, return NULL; if (!conn) { - if (peer && !rxrpc_get_peer_maybe(peer)) + if (peer && !rxrpc_get_peer_maybe(peer, rxrpc_peer_get_service_conn)) peer = NULL; if (!peer) { peer = b->peer_backlog[peer_tail]; @@ -323,7 +325,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx, call->conn = conn; call->security = conn->security; call->security_ix = conn->security_ix; - call->peer = rxrpc_get_peer(conn->peer); + call->peer = rxrpc_get_peer(conn->peer, rxrpc_peer_get_accept); call->cong_ssthresh = call->peer->cong_ssthresh; call->tx_last_sent = ktime_get_real(); return call; diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index 59928f0a8fe1..1b725afd6e2c 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -636,7 +636,7 @@ static void rxrpc_destroy_call(struct work_struct *work) rxrpc_delete_call_timer(call); rxrpc_put_connection(call->conn); - rxrpc_put_peer(call->peer); + rxrpc_put_peer(call->peer, rxrpc_peer_put_call); kmem_cache_free(rxrpc_call_jar, call); if (atomic_dec_and_test(&rxnet->nr_calls)) wake_up_var(&rxnet->nr_calls); diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c index 9a69b4c1b182..9444da235a48 100644 --- a/net/rxrpc/conn_client.c +++ b/net/rxrpc/conn_client.c @@ -123,7 +123,7 @@ static struct rxrpc_bundle *rxrpc_alloc_bundle(struct rxrpc_conn_parameters *cp, bundle = kzalloc(sizeof(*bundle), gfp); if (bundle) { bundle->local = cp->local; - bundle->peer = rxrpc_get_peer(cp->peer); + bundle->peer = rxrpc_get_peer(cp->peer, rxrpc_peer_get_bundle); bundle->key = cp->key; bundle->exclusive = cp->exclusive; bundle->upgrade = cp->upgrade; @@ -145,7 +145,7 @@ struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *bundle) static void rxrpc_free_bundle(struct rxrpc_bundle *bundle) { - rxrpc_put_peer(bundle->peer); + rxrpc_put_peer(bundle->peer, rxrpc_peer_put_bundle); kfree(bundle); } @@ -207,7 +207,7 @@ rxrpc_alloc_client_connection(struct rxrpc_bundle *bundle, gfp_t gfp) write_unlock(&rxnet->conn_lock); rxrpc_get_bundle(bundle); - rxrpc_get_peer(conn->peer); + rxrpc_get_peer(conn->peer, rxrpc_peer_get_client_conn); rxrpc_get_local(conn->local, rxrpc_local_get_client_conn); key_get(conn->key); @@ -543,7 +543,7 @@ static void rxrpc_activate_one_channel(struct rxrpc_connection *conn, rxrpc_see_call(call); list_del_init(&call->chan_wait_link); - call->peer = rxrpc_get_peer(conn->peer); + call->peer = rxrpc_get_peer(conn->peer, rxrpc_peer_get_activate_call); call->conn = rxrpc_get_connection(conn); call->cid = conn->proto.cid | channel; call->call_id = call_id; diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c index 725359afeac0..554ee5dd3325 100644 --- a/net/rxrpc/conn_object.c +++ b/net/rxrpc/conn_object.c @@ -362,7 +362,7 @@ static void rxrpc_destroy_connection(struct rcu_head *rcu) conn->security->clear(conn); key_put(conn->key); rxrpc_put_bundle(conn->bundle); - rxrpc_put_peer(conn->peer); + rxrpc_put_peer(conn->peer, rxrpc_peer_put_conn); if (atomic_dec_and_test(&conn->local->rxnet->nr_conns)) wake_up_var(&conn->local->rxnet->nr_conns); diff --git a/net/rxrpc/peer_event.c b/net/rxrpc/peer_event.c index 3f8d104ecaa7..5e97d321ac38 100644 --- a/net/rxrpc/peer_event.c +++ b/net/rxrpc/peer_event.c @@ -168,7 +168,7 @@ void rxrpc_error_report(struct sock *sk) } peer = rxrpc_lookup_peer_local_rcu(local, skb, &srx); - if (peer && !rxrpc_get_peer_maybe(peer)) + if (peer && !rxrpc_get_peer_maybe(peer, rxrpc_peer_get_input_error)) peer = NULL; if (!peer) { rcu_read_unlock(); @@ -190,7 +190,7 @@ void rxrpc_error_report(struct sock *sk) out: rcu_read_unlock(); rxrpc_free_skb(skb, rxrpc_skb_freed); - rxrpc_put_peer(peer); + rxrpc_put_peer(peer, rxrpc_peer_put_input_error); _leave(""); } @@ -263,7 +263,7 @@ static void rxrpc_peer_keepalive_dispatch(struct rxrpc_net *rxnet, struct rxrpc_peer, keepalive_link); list_del_init(&peer->keepalive_link); - if (!rxrpc_get_peer_maybe(peer)) + if (!rxrpc_get_peer_maybe(peer, rxrpc_peer_get_keepalive)) continue; if (__rxrpc_use_local(peer->local, rxrpc_local_use_peer_keepalive)) { @@ -291,7 +291,7 @@ static void rxrpc_peer_keepalive_dispatch(struct rxrpc_net *rxnet, &rxnet->peer_keepalive[slot & mask]); rxrpc_unuse_local(peer->local, rxrpc_local_unuse_peer_keepalive); } - rxrpc_put_peer_locked(peer); + rxrpc_put_peer_locked(peer, rxrpc_peer_put_keepalive); } spin_unlock_bh(&rxnet->peer_hash_lock); diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c index bcef897560e7..9e682a60a800 100644 --- a/net/rxrpc/peer_object.c +++ b/net/rxrpc/peer_object.c @@ -205,9 +205,9 @@ static void rxrpc_assess_MTU_size(struct rxrpc_sock *rx, /* * Allocate a peer. */ -struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *local, gfp_t gfp) +struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *local, gfp_t gfp, + enum rxrpc_peer_trace why) { - const void *here = __builtin_return_address(0); struct rxrpc_peer *peer; _enter(""); @@ -226,7 +226,7 @@ struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *local, gfp_t gfp) rxrpc_peer_init_rtt(peer); peer->cong_ssthresh = RXRPC_TX_MAX_WINDOW; - trace_rxrpc_peer(peer->debug_id, rxrpc_peer_new, 1, here); + trace_rxrpc_peer(peer->debug_id, why, 1); } _leave(" = %p", peer); @@ -282,7 +282,7 @@ static struct rxrpc_peer *rxrpc_create_peer(struct rxrpc_sock *rx, _enter(""); - peer = rxrpc_alloc_peer(local, gfp); + peer = rxrpc_alloc_peer(local, gfp, rxrpc_peer_new_client); if (peer) { memcpy(&peer->srx, srx, sizeof(*srx)); rxrpc_init_peer(rx, peer, hash_key); @@ -294,6 +294,7 @@ static struct rxrpc_peer *rxrpc_create_peer(struct rxrpc_sock *rx, static void rxrpc_free_peer(struct rxrpc_peer *peer) { + trace_rxrpc_peer(peer->debug_id, 0, rxrpc_peer_free); rxrpc_put_local(peer->local, rxrpc_local_put_peer); kfree_rcu(peer, rcu); } @@ -334,7 +335,7 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *rx, /* search the peer list first */ rcu_read_lock(); peer = __rxrpc_lookup_peer_rcu(local, srx, hash_key); - if (peer && !rxrpc_get_peer_maybe(peer)) + if (peer && !rxrpc_get_peer_maybe(peer, rxrpc_peer_get_lookup_client)) peer = NULL; rcu_read_unlock(); @@ -352,7 +353,7 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *rx, /* Need to check that we aren't racing with someone else */ peer = __rxrpc_lookup_peer_rcu(local, srx, hash_key); - if (peer && !rxrpc_get_peer_maybe(peer)) + if (peer && !rxrpc_get_peer_maybe(peer, rxrpc_peer_get_lookup_client)) peer = NULL; if (!peer) { hash_add_rcu(rxnet->peer_hash, @@ -376,27 +377,26 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *rx, /* * Get a ref on a peer record. */ -struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) +struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer, enum rxrpc_peer_trace why) { - const void *here = __builtin_return_address(0); int r; __refcount_inc(&peer->ref, &r); - trace_rxrpc_peer(peer->debug_id, rxrpc_peer_got, r + 1, here); + trace_rxrpc_peer(peer->debug_id, why, r + 1); return peer; } /* * Get a ref on a peer record unless its usage has already reached 0. */ -struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) +struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer, + enum rxrpc_peer_trace why) { - const void *here = __builtin_return_address(0); int r; if (peer) { if (__refcount_inc_not_zero(&peer->ref, &r)) - trace_rxrpc_peer(peer->debug_id, rxrpc_peer_got, r + 1, here); + trace_rxrpc_peer(peer->debug_id, r + 1, why); else peer = NULL; } @@ -423,9 +423,8 @@ static void __rxrpc_put_peer(struct rxrpc_peer *peer) /* * Drop a ref on a peer record. */ -void rxrpc_put_peer(struct rxrpc_peer *peer) +void rxrpc_put_peer(struct rxrpc_peer *peer, enum rxrpc_peer_trace why) { - const void *here = __builtin_return_address(0); unsigned int debug_id; bool dead; int r; @@ -433,7 +432,7 @@ void rxrpc_put_peer(struct rxrpc_peer *peer) if (peer) { debug_id = peer->debug_id; dead = __refcount_dec_and_test(&peer->ref, &r); - trace_rxrpc_peer(debug_id, rxrpc_peer_put, r - 1, here); + trace_rxrpc_peer(debug_id, r - 1, why); if (dead) __rxrpc_put_peer(peer); } @@ -443,15 +442,14 @@ void rxrpc_put_peer(struct rxrpc_peer *peer) * Drop a ref on a peer record where the caller already holds the * peer_hash_lock. */ -void rxrpc_put_peer_locked(struct rxrpc_peer *peer) +void rxrpc_put_peer_locked(struct rxrpc_peer *peer, enum rxrpc_peer_trace why) { - const void *here = __builtin_return_address(0); unsigned int debug_id = peer->debug_id; bool dead; int r; dead = __refcount_dec_and_test(&peer->ref, &r); - trace_rxrpc_peer(debug_id, rxrpc_peer_put, r - 1, here); + trace_rxrpc_peer(debug_id, r - 1, why); if (dead) { hash_del_rcu(&peer->hash_link); list_del_init(&peer->keepalive_link); diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c index e5fd8a95bf71..cfe0badba0b3 100644 --- a/net/rxrpc/sendmsg.c +++ b/net/rxrpc/sendmsg.c @@ -604,7 +604,7 @@ rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, atomic_inc_return(&rxrpc_debug_id)); /* The socket is now unlocked */ - rxrpc_put_peer(cp.peer); + rxrpc_put_peer(cp.peer, rxrpc_peer_put_discard_tmp); _leave(" = %p\n", call); return call; }

[net-next,09/13] rxrpc: trace: Don't use __builtin_return_address for rxrpc_peer tracing

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