rxrpc: Fix some minor issues with bundle tracing

[ Upstream commit 0c3bd086d12d185650d095a906662593ec607bd0 ]

Fix some superficial issues with the tracing of rxrpc_bundle structs,
including:

 (1) Set the debug_id when the bundle is allocated rather than when it is
     set up so that the "NEW" trace line displays the correct bundle ID.

 (2) Show the refcount when emitting the "FREE" traceline.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c
index 981ca5b..1d95f8b 100644 (file)
--- a/net/rxrpc/conn_client.c
+++ b/net/rxrpc/conn_client.c
@@ -73,6 +73,7 @@ static void rxrpc_destroy_client_conn_ids(struct rxrpc_local *local)
 static struct rxrpc_bundle *rxrpc_alloc_bundle(struct rxrpc_call *call,
                                               gfp_t gfp)
 {
+       static atomic_t rxrpc_bundle_id;
        struct rxrpc_bundle *bundle;
 
        bundle = kzalloc(sizeof(*bundle), gfp);
@@ -85,6 +86,7 @@ static struct rxrpc_bundle *rxrpc_alloc_bundle(struct rxrpc_call *call,
                bundle->upgrade         = test_bit(RXRPC_CALL_UPGRADE, &call->flags);
                bundle->service_id      = call->dest_srx.srx_service;
                bundle->security_level  = call->security_level;
+               bundle->debug_id        = atomic_inc_return(&rxrpc_bundle_id);
                refcount_set(&bundle->ref, 1);
                atomic_set(&bundle->active, 1);
                INIT_LIST_HEAD(&bundle->waiting_calls);
@@ -105,7 +107,8 @@ struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *bundle,
 
 static void rxrpc_free_bundle(struct rxrpc_bundle *bundle)
 {
-       trace_rxrpc_bundle(bundle->debug_id, 1, rxrpc_bundle_free);
+       trace_rxrpc_bundle(bundle->debug_id, refcount_read(&bundle->ref),
+                          rxrpc_bundle_free);
        rxrpc_put_peer(bundle->peer, rxrpc_peer_put_bundle);
        key_put(bundle->key);
        kfree(bundle);
@@ -239,7 +242,6 @@ dont_reuse:
  */
 int rxrpc_look_up_bundle(struct rxrpc_call *call, gfp_t gfp)
 {
-       static atomic_t rxrpc_bundle_id;
        struct rxrpc_bundle *bundle, *candidate;
        struct rxrpc_local *local = call->local;
        struct rb_node *p, **pp, *parent;
@@ -306,7 +308,6 @@ int rxrpc_look_up_bundle(struct rxrpc_call *call, gfp_t gfp)
        }
 
        _debug("new bundle");
-       candidate->debug_id = atomic_inc_return(&rxrpc_bundle_id);
        rb_link_node(&candidate->local_node, parent, pp);
        rb_insert_color(&candidate->local_node, &local->client_bundles);
        call->bundle = rxrpc_get_bundle(candidate, rxrpc_bundle_get_client_call);