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rxrpc: Adjust the call ref tracepoint to show kernel API refs 

Adjust the call ref tracepoint to show references held on a call by the
kernel API separately as much as possible and add an additional trace to at
the allocation point from the preallocation buffer for an incoming call.

Note that this doesn't show the allocation of a client call for the kernel
separately at the moment.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-09-13 09:12:34 +01:00
parent 01fd074224
commit cbd00891de
4 changed files with 7 additions and 2 deletions
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2
net/rxrpc/af_rxrpc.c
View File

@ -299,7 +299,7 @@ void rxrpc_kernel_end_call(struct socket *sock, struct rxrpc_call *call)
{
_enter("%d{%d}", call->debug_id, atomic_read(&call->usage));
rxrpc_release_call(rxrpc_sk(sock->sk), call);
rxrpc_put_call(call, rxrpc_call_put);
rxrpc_put_call(call, rxrpc_call_put_kernel);
}
EXPORT_SYMBOL(rxrpc_kernel_end_call);

2
net/rxrpc/ar-internal.h
View File

@ -540,8 +540,10 @@ enum rxrpc_call_trace {
rxrpc_call_seen,
rxrpc_call_got,
rxrpc_call_got_userid,
rxrpc_call_got_kernel,
rxrpc_call_put,
rxrpc_call_put_userid,
rxrpc_call_put_kernel,
rxrpc_call_put_noqueue,
rxrpc_call__nr_trace
};

3
net/rxrpc/call_accept.c
View File

@ -121,7 +121,7 @@ static int rxrpc_service_prealloc_one(struct rxrpc_sock *rx,
call->user_call_ID = user_call_ID;
call->notify_rx = notify_rx;
rxrpc_get_call(call, rxrpc_call_got);
rxrpc_get_call(call, rxrpc_call_got_kernel);
user_attach_call(call, user_call_ID);
rxrpc_get_call(call, rxrpc_call_got_userid);
rb_link_node(&call->sock_node, parent, pp);
@ -300,6 +300,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx,
smp_store_release(&b->call_backlog_tail,
(call_tail + 1) & (RXRPC_BACKLOG_MAX - 1));
rxrpc_see_call(call);
call->conn = conn;
call->peer = rxrpc_get_peer(conn->params.peer);
return call;

2
net/rxrpc/call_object.c
View File

@ -56,8 +56,10 @@ const char rxrpc_call_traces[rxrpc_call__nr_trace][4] = {
[rxrpc_call_seen] = "SEE",
[rxrpc_call_got] = "GOT",
[rxrpc_call_got_userid] = "Gus",
[rxrpc_call_got_kernel] = "Gke",
[rxrpc_call_put] = "PUT",
[rxrpc_call_put_userid] = "Pus",
[rxrpc_call_put_kernel] = "Pke",
[rxrpc_call_put_noqueue] = "PNQ",
};