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rxrpc: trace: Don't use __builtin_return_address for rxrpc_call tracing

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In rxrpc tracing, use enums to generate lists of points of interest rather
than __builtin_return_address() for the rxrpc_call tracepoint

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
This commit is contained in:
David Howells
2022-10-21 14:39:26 +01:00
parent 7fa25105b2
commit cb0fc0c972
11 changed files with 121 additions and 122 deletions
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102
net/rxrpc/call_object.c
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@@ -53,9 +53,9 @@ static void rxrpc_call_timer_expired(struct timer_list *t)
if (call->state < RXRPC_CALL_COMPLETE) {
trace_rxrpc_timer_expired(call, jiffies);
__rxrpc_queue_call(call);
__rxrpc_queue_call(call, rxrpc_call_queue_timer);
} else {
rxrpc_put_call(call, rxrpc_call_put);
rxrpc_put_call(call, rxrpc_call_put_already_queued);
}
}
@@ -64,10 +64,10 @@ void rxrpc_reduce_call_timer(struct rxrpc_call *call,
unsigned long now,
enum rxrpc_timer_trace why)
{
if (rxrpc_try_get_call(call, rxrpc_call_got_timer)) {
if (rxrpc_try_get_call(call, rxrpc_call_get_timer)) {
trace_rxrpc_timer(call, why, now);
if (timer_reduce(&call->timer, expire_at))
rxrpc_put_call(call, rxrpc_call_put_notimer);
rxrpc_put_call(call, rxrpc_call_put_timer_already);
}
}
@@ -110,7 +110,7 @@ struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *rx,
return NULL;
found_extant_call:
rxrpc_get_call(call, rxrpc_call_got);
rxrpc_get_call(call, rxrpc_call_get_sendmsg);
read_unlock(&rx->call_lock);
_leave(" = %p [%d]", call, refcount_read(&call->ref));
return call;
@@ -270,7 +270,6 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
struct rxrpc_net *rxnet;
struct semaphore *limiter;
struct rb_node *parent, **pp;
const void *here = __builtin_return_address(0);
int ret;
_enter("%p,%lx", rx, p->user_call_ID);
@@ -291,9 +290,8 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
call->interruptibility = p->interruptibility;
call->tx_total_len = p->tx_total_len;
trace_rxrpc_call(call->debug_id, rxrpc_call_new_client,
refcount_read(&call->ref),
here, (const void *)p->user_call_ID);
trace_rxrpc_call(call->debug_id, refcount_read(&call->ref),
p->user_call_ID, rxrpc_call_new_client);
if (p->kernel)
__set_bit(RXRPC_CALL_KERNEL, &call->flags);
@@ -322,7 +320,7 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
rcu_assign_pointer(call->socket, rx);
call->user_call_ID = p->user_call_ID;
__set_bit(RXRPC_CALL_HAS_USERID, &call->flags);
rxrpc_get_call(call, rxrpc_call_got_userid);
rxrpc_get_call(call, rxrpc_call_get_userid);
rb_link_node(&call->sock_node, parent, pp);
rb_insert_color(&call->sock_node, &rx->calls);
list_add(&call->sock_link, &rx->sock_calls);
@@ -344,8 +342,7 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
if (ret < 0)
goto error_attached_to_socket;
trace_rxrpc_call(call->debug_id, rxrpc_call_connected,
refcount_read(&call->ref), here, NULL);
rxrpc_see_call(call, rxrpc_call_see_connected);
rxrpc_start_call_timer(call);
@@ -362,11 +359,11 @@ error_dup_user_ID:
release_sock(&rx->sk);
__rxrpc_set_call_completion(call, RXRPC_CALL_LOCAL_ERROR,
RX_CALL_DEAD, -EEXIST);
trace_rxrpc_call(call->debug_id, rxrpc_call_error,
refcount_read(&call->ref), here, ERR_PTR(-EEXIST));
trace_rxrpc_call(call->debug_id, refcount_read(&call->ref), 0,
rxrpc_call_see_userid_exists);
rxrpc_release_call(rx, call);
mutex_unlock(&call->user_mutex);
rxrpc_put_call(call, rxrpc_call_put);
rxrpc_put_call(call, rxrpc_call_put_userid_exists);
_leave(" = -EEXIST");
return ERR_PTR(-EEXIST);
@@ -376,8 +373,8 @@ error_dup_user_ID:
* leave the error to recvmsg() to deal with.
*/
error_attached_to_socket:
trace_rxrpc_call(call->debug_id, rxrpc_call_error,
refcount_read(&call->ref), here, ERR_PTR(ret));
trace_rxrpc_call(call->debug_id, refcount_read(&call->ref), ret,
rxrpc_call_see_connect_failed);
set_bit(RXRPC_CALL_DISCONNECTED, &call->flags);
__rxrpc_set_call_completion(call, RXRPC_CALL_LOCAL_ERROR,
RX_CALL_DEAD, ret);
@@ -428,72 +425,65 @@ void rxrpc_incoming_call(struct rxrpc_sock *rx,
/*
* Queue a call's work processor, getting a ref to pass to the work queue.
*/
bool rxrpc_queue_call(struct rxrpc_call *call)
bool rxrpc_queue_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
{
const void *here = __builtin_return_address(0);
int n;
if (!__refcount_inc_not_zero(&call->ref, &n))
return false;
if (rxrpc_queue_work(&call->processor))
trace_rxrpc_call(call->debug_id, rxrpc_call_queued, n + 1,
here, NULL);
trace_rxrpc_call(call->debug_id, n + 1, 0, why);
else
rxrpc_put_call(call, rxrpc_call_put_noqueue);
rxrpc_put_call(call, rxrpc_call_put_already_queued);
return true;
}
/*
* Queue a call's work processor, passing the callers ref to the work queue.
*/
bool __rxrpc_queue_call(struct rxrpc_call *call)
bool __rxrpc_queue_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
{
const void *here = __builtin_return_address(0);
int n = refcount_read(&call->ref);
ASSERTCMP(n, >=, 1);
if (rxrpc_queue_work(&call->processor))
trace_rxrpc_call(call->debug_id, rxrpc_call_queued_ref, n,
here, NULL);
trace_rxrpc_call(call->debug_id, n, 0, why);
else
rxrpc_put_call(call, rxrpc_call_put_noqueue);
rxrpc_put_call(call, rxrpc_call_put_already_queued);
return true;
}
/*
* Note the re-emergence of a call.
*/
void rxrpc_see_call(struct rxrpc_call *call)
void rxrpc_see_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
{
const void *here = __builtin_return_address(0);
if (call) {
int n = refcount_read(&call->ref);
int r = refcount_read(&call->ref);
trace_rxrpc_call(call->debug_id, rxrpc_call_seen, n,
here, NULL);
trace_rxrpc_call(call->debug_id, r, 0, why);
}
}
bool rxrpc_try_get_call(struct rxrpc_call *call, enum rxrpc_call_trace op)
bool rxrpc_try_get_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
{
const void *here = __builtin_return_address(0);
int n;
int r;
if (!__refcount_inc_not_zero(&call->ref, &n))
if (!__refcount_inc_not_zero(&call->ref, &r))
return false;
trace_rxrpc_call(call->debug_id, op, n + 1, here, NULL);
trace_rxrpc_call(call->debug_id, r + 1, 0, why);
return true;
}
/*
* Note the addition of a ref on a call.
*/
void rxrpc_get_call(struct rxrpc_call *call, enum rxrpc_call_trace op)
void rxrpc_get_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
{
const void *here = __builtin_return_address(0);
int n;
int r;
__refcount_inc(&call->ref, &n);
trace_rxrpc_call(call->debug_id, op, n + 1, here, NULL);
__refcount_inc(&call->ref, &r);
trace_rxrpc_call(call->debug_id, r + 1, 0, why);
}
/*
@@ -510,15 +500,13 @@ static void rxrpc_cleanup_ring(struct rxrpc_call *call)
*/
void rxrpc_release_call(struct rxrpc_sock *rx, struct rxrpc_call *call)
{
const void *here = __builtin_return_address(0);
struct rxrpc_connection *conn = call->conn;
bool put = false;
_enter("{%d,%d}", call->debug_id, refcount_read(&call->ref));
trace_rxrpc_call(call->debug_id, rxrpc_call_release,
refcount_read(&call->ref),
here, (const void *)call->flags);
trace_rxrpc_call(call->debug_id, refcount_read(&call->ref),
call->flags, rxrpc_call_see_release);
ASSERTCMP(call->state, ==, RXRPC_CALL_COMPLETE);
@@ -544,14 +532,14 @@ void rxrpc_release_call(struct rxrpc_sock *rx, struct rxrpc_call *call)
write_unlock_bh(&rx->recvmsg_lock);
if (put)
rxrpc_put_call(call, rxrpc_call_put);
rxrpc_put_call(call, rxrpc_call_put_unnotify);
write_lock(&rx->call_lock);
if (test_and_clear_bit(RXRPC_CALL_HAS_USERID, &call->flags)) {
rb_erase(&call->sock_node, &rx->calls);
memset(&call->sock_node, 0xdd, sizeof(call->sock_node));
rxrpc_put_call(call, rxrpc_call_put_userid);
rxrpc_put_call(call, rxrpc_call_put_userid_exists);
}
list_del(&call->sock_link);
@@ -580,17 +568,17 @@ void rxrpc_release_calls_on_socket(struct rxrpc_sock *rx)
struct rxrpc_call, accept_link);
list_del(&call->accept_link);
rxrpc_abort_call("SKR", call, 0, RX_CALL_DEAD, -ECONNRESET);
rxrpc_put_call(call, rxrpc_call_put);
rxrpc_put_call(call, rxrpc_call_put_release_sock_tba);
}
while (!list_empty(&rx->sock_calls)) {
call = list_entry(rx->sock_calls.next,
struct rxrpc_call, sock_link);
rxrpc_get_call(call, rxrpc_call_got);
rxrpc_get_call(call, rxrpc_call_get_release_sock);
rxrpc_abort_call("SKT", call, 0, RX_CALL_DEAD, -ECONNRESET);
rxrpc_send_abort_packet(call);
rxrpc_release_call(rx, call);
rxrpc_put_call(call, rxrpc_call_put);
rxrpc_put_call(call, rxrpc_call_put_release_sock);
}
_leave("");
@@ -599,20 +587,18 @@ void rxrpc_release_calls_on_socket(struct rxrpc_sock *rx)
/*
* release a call
*/
void rxrpc_put_call(struct rxrpc_call *call, enum rxrpc_call_trace op)
void rxrpc_put_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
{
struct rxrpc_net *rxnet = call->rxnet;
const void *here = __builtin_return_address(0);
unsigned int debug_id = call->debug_id;
bool dead;
int n;
int r;
ASSERT(call != NULL);
dead = __refcount_dec_and_test(&call->ref, &n);
trace_rxrpc_call(debug_id, op, n, here, NULL);
dead = __refcount_dec_and_test(&call->ref, &r);
trace_rxrpc_call(debug_id, r - 1, 0, why);
if (dead) {
_debug("call %d dead", call->debug_id);
ASSERTCMP(call->state, ==, RXRPC_CALL_COMPLETE);
if (!list_empty(&call->link)) {
@@ -701,7 +687,7 @@ void rxrpc_destroy_all_calls(struct rxrpc_net *rxnet)
struct rxrpc_call, link);
_debug("Zapping call %p", call);
rxrpc_see_call(call);
rxrpc_see_call(call, rxrpc_call_see_zap);
list_del_init(&call->link);
pr_err("Call %p still in use (%d,%s,%lx,%lx)!\n",