SUNRPC: Remove some dprintk() call sites from auth functions

Clean up: Reduce dprintk noise by removing dprintk() call sites
from hot path that do not report exceptions. These are usually
replaceable with function graph tracing.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

net/sunrpc/auth.c

@@ -17,10 +17,6 @@
 #include <linux/sunrpc/gss_api.h>
 #include <linux/spinlock.h>
 
-#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
-# define RPCDBG_FACILITY	RPCDBG_AUTH
-#endif
-
 #define RPC_CREDCACHE_DEFAULT_HASHBITS	(4)
 struct rpc_cred_cache {
 	struct hlist_head	*hashtable;
@@ -267,8 +263,6 @@ rpcauth_list_flavors(rpc_authflavor_t *array, int size)
 		}
 	}
 	rcu_read_unlock();
-
-	dprintk("RPC:       %s returns %d\n", __func__, result);
 	return result;
 }
 EXPORT_SYMBOL_GPL(rpcauth_list_flavors);
@@ -636,9 +630,6 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags)
 	struct rpc_cred *ret;
 	const struct cred *cred = current_cred();
 
-	dprintk("RPC:       looking up %s cred\n",
-		auth->au_ops->au_name);
-
 	memset(&acred, 0, sizeof(acred));
 	acred.cred = cred;
 	ret = auth->au_ops->lookup_cred(auth, &acred, flags);
@@ -670,8 +661,6 @@ rpcauth_bind_root_cred(struct rpc_task *task, int lookupflags)
 	};
 	struct rpc_cred *ret;
 
-	dprintk("RPC: %5u looking up %s cred\n",
-		task->tk_pid, task->tk_client->cl_auth->au_ops->au_name);
 	ret = auth->au_ops->lookup_cred(auth, &acred, lookupflags);
 	put_cred(acred.cred);
 	return ret;
@@ -688,8 +677,6 @@ rpcauth_bind_machine_cred(struct rpc_task *task, int lookupflags)
 
 	if (!acred.principal)
 		return NULL;
-	dprintk("RPC: %5u looking up %s machine cred\n",
-		task->tk_pid, task->tk_client->cl_auth->au_ops->au_name);
 	return auth->au_ops->lookup_cred(auth, &acred, lookupflags);
 }
 
@@ -698,8 +685,6 @@ rpcauth_bind_new_cred(struct rpc_task *task, int lookupflags)
 {
 	struct rpc_auth *auth = task->tk_client->cl_auth;
 
-	dprintk("RPC: %5u looking up %s cred\n",
-		task->tk_pid, auth->au_ops->au_name);
 	return rpcauth_lookupcred(auth, lookupflags);
 }
 
@@ -776,9 +761,6 @@ rpcauth_marshcred(struct rpc_task *task, __be32 *p)
 {
 	struct rpc_cred	*cred = task->tk_rqstp->rq_cred;
 
-	dprintk("RPC: %5u marshaling %s cred %p\n",
-		task->tk_pid, cred->cr_auth->au_ops->au_name, cred);
-
 	return cred->cr_ops->crmarshal(task, p);
 }
 
@@ -787,9 +769,6 @@ rpcauth_checkverf(struct rpc_task *task, __be32 *p)
 {
 	struct rpc_cred	*cred = task->tk_rqstp->rq_cred;
 
-	dprintk("RPC: %5u validating %s cred %p\n",
-		task->tk_pid, cred->cr_auth->au_ops->au_name, cred);
-
 	return cred->cr_ops->crvalidate(task, p);
 }
 
@@ -808,8 +787,6 @@ rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp,
 {
 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;
 
-	dprintk("RPC: %5u using %s cred %p to wrap rpc data\n",
-			task->tk_pid, cred->cr_ops->cr_name, cred);
 	if (cred->cr_ops->crwrap_req)
 		return cred->cr_ops->crwrap_req(task, encode, rqstp, data, obj);
 	/* By default, we encode the arguments normally. */
@@ -833,8 +810,6 @@ rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp,
 {
 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;
 
-	dprintk("RPC: %5u using %s cred %p to unwrap rpc data\n",
-			task->tk_pid, cred->cr_ops->cr_name, cred);
 	if (cred->cr_ops->crunwrap_resp)
 		return cred->cr_ops->crunwrap_resp(task, decode, rqstp,
 						   data, obj);
@@ -865,8 +840,6 @@ rpcauth_refreshcred(struct rpc_task *task)
 			goto out;
 		cred = task->tk_rqstp->rq_cred;
 	}
-	dprintk("RPC: %5u refreshing %s cred %p\n",
-		task->tk_pid, cred->cr_auth->au_ops->au_name, cred);
 
 	err = cred->cr_ops->crrefresh(task);
 out:
@@ -880,8 +853,6 @@ rpcauth_invalcred(struct rpc_task *task)
 {
 	struct rpc_cred *cred = task->tk_rqstp->rq_cred;
 
-	dprintk("RPC: %5u invalidating %s cred %p\n",
-		task->tk_pid, cred->cr_auth->au_ops->au_name, cred);
 	if (cred)
 		clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags);
 }

net/sunrpc/auth_unix.c

@@ -28,16 +28,13 @@ static mempool_t		*unix_pool;
 static struct rpc_auth *
 unx_create(const struct rpc_auth_create_args *args, struct rpc_clnt *clnt)
 {
-	dprintk("RPC:       creating UNIX authenticator for client %p\n",
-			clnt);
 	refcount_inc(&unix_auth.au_count);
 	return &unix_auth;
 }
 
 static void
 unx_destroy(struct rpc_auth *auth)
 {
-	dprintk("RPC:       destroying UNIX authenticator %p\n", auth);
 }
 
 /*
@@ -48,10 +45,6 @@ unx_lookup_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
 {
 	struct rpc_cred *ret = mempool_alloc(unix_pool, GFP_NOFS);
 
-	dprintk("RPC:       allocating UNIX cred for uid %d gid %d\n",
-			from_kuid(&init_user_ns, acred->cred->fsuid),
-			from_kgid(&init_user_ns, acred->cred->fsgid));
-
 	rpcauth_init_cred(ret, acred, auth, &unix_credops);
 	ret->cr_flags = 1UL << RPCAUTH_CRED_UPTODATE;
 	return ret;
@@ -61,7 +54,7 @@ static void
 unx_free_cred_callback(struct rcu_head *head)
 {
 	struct rpc_cred *rpc_cred = container_of(head, struct rpc_cred, cr_rcu);
-	dprintk("RPC:       unx_free_cred %p\n", rpc_cred);
+
 	put_cred(rpc_cred->cr_cred);
 	mempool_free(rpc_cred, unix_pool);
 }