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rxrpc, afs: Use debug_ids rather than pointers in traces

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In rxrpc and afs, use the debug_ids that are monotonically allocated to
various objects as they're allocated rather than pointers as kernel
pointers are now hashed making them less useful.  Further, the debug ids
aren't reused anywhere nearly as quickly.

In addition, allow kernel services that use rxrpc, such as afs, to take
numbers from the rxrpc counter, assign them to their own call struct and
pass them in to rxrpc for both client and service calls so that the trace
lines for each will have the same ID tag.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2018-03-27 23:03:00 +01:00
parent 827efed6a6
commit a25e21f0bc
12 changed files with 163 additions and 145 deletions
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15
net/rxrpc/call_object.c
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@@ -99,7 +99,8 @@ found_extant_call:
/*
* allocate a new call
*/
struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *rx, gfp_t gfp)
struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *rx, gfp_t gfp,
unsigned int debug_id)
{
struct rxrpc_call *call;
@@ -138,7 +139,7 @@ struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *rx, gfp_t gfp)
spin_lock_init(&call->notify_lock);
rwlock_init(&call->state_lock);
atomic_set(&call->usage, 1);
call->debug_id = atomic_inc_return(&rxrpc_debug_id);
call->debug_id = debug_id;
call->tx_total_len = -1;
call->next_rx_timo = 20 * HZ;
call->next_req_timo = 1 * HZ;
@@ -166,14 +167,15 @@ nomem:
*/
static struct rxrpc_call *rxrpc_alloc_client_call(struct rxrpc_sock *rx,
struct sockaddr_rxrpc *srx,
gfp_t gfp)
gfp_t gfp,
unsigned int debug_id)
{
struct rxrpc_call *call;
ktime_t now;
_enter("");
call = rxrpc_alloc_call(rx, gfp);
call = rxrpc_alloc_call(rx, gfp, debug_id);
if (!call)
return ERR_PTR(-ENOMEM);
call->state = RXRPC_CALL_CLIENT_AWAIT_CONN;
@@ -214,7 +216,8 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
struct rxrpc_conn_parameters *cp,
struct sockaddr_rxrpc *srx,
struct rxrpc_call_params *p,
gfp_t gfp)
gfp_t gfp,
unsigned int debug_id)
__releases(&rx->sk.sk_lock.slock)
{
struct rxrpc_call *call, *xcall;
@@ -225,7 +228,7 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
_enter("%p,%lx", rx, p->user_call_ID);
call = rxrpc_alloc_client_call(rx, srx, gfp);
call = rxrpc_alloc_client_call(rx, srx, gfp, debug_id);
if (IS_ERR(call)) {
release_sock(&rx->sk);
_leave(" = %ld", PTR_ERR(call));