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authorPeter Zijlstra <peterz@infradead.org>2014-03-17 18:06:10 +0100
committerIngo Molnar <mingo@kernel.org>2014-04-18 14:20:48 +0200
commit4e857c58efeb99393cba5a5d0d8ec7117183137c (patch)
tree3f6fd464e4fddb2fe90374c075c9d06603cf8bbc /net
parent1b15611e1c30b37abe393d411c316cd659920bf5 (diff)
downloadop-kernel-dev-4e857c58efeb99393cba5a5d0d8ec7117183137c.zip
op-kernel-dev-4e857c58efeb99393cba5a5d0d8ec7117183137c.tar.gz
arch: Mass conversion of smp_mb__*()
Mostly scripted conversion of the smp_mb__* barriers. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-55dhyhocezdw1dg7u19hmh1u@git.kernel.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-arch@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net')
-rw-r--r--net/atm/pppoatm.c2
-rw-r--r--net/bluetooth/hci_event.c4
-rw-r--r--net/core/dev.c8
-rw-r--r--net/core/link_watch.c2
-rw-r--r--net/ipv4/inetpeer.c2
-rw-r--r--net/ipv4/tcp_output.c4
-rw-r--r--net/netfilter/nf_conntrack_core.c2
-rw-r--r--net/rds/ib_recv.c4
-rw-r--r--net/rds/iw_recv.c4
-rw-r--r--net/rds/send.c6
-rw-r--r--net/rds/tcp_send.c2
-rw-r--r--net/sunrpc/auth.c2
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c2
-rw-r--r--net/sunrpc/backchannel_rqst.c4
-rw-r--r--net/sunrpc/xprt.c4
-rw-r--r--net/sunrpc/xprtsock.c16
-rw-r--r--net/unix/af_unix.c2
17 files changed, 34 insertions, 36 deletions
diff --git a/net/atm/pppoatm.c b/net/atm/pppoatm.c
index 8c93267..c4e0984 100644
--- a/net/atm/pppoatm.c
+++ b/net/atm/pppoatm.c
@@ -252,7 +252,7 @@ static int pppoatm_may_send(struct pppoatm_vcc *pvcc, int size)
* we need to ensure there's a memory barrier after it. The bit
* *must* be set before we do the atomic_inc() on pvcc->inflight.
* There's no smp_mb__after_set_bit(), so it's this or abuse
- * smp_mb__after_clear_bit().
+ * smp_mb__after_atomic().
*/
test_and_set_bit(BLOCKED, &pvcc->blocked);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 4977491..7401442 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -45,7 +45,7 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
return;
clear_bit(HCI_INQUIRY, &hdev->flags);
- smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */
+ smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
wake_up_bit(&hdev->flags, HCI_INQUIRY);
hci_conn_check_pending(hdev);
@@ -1768,7 +1768,7 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
return;
- smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */
+ smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
wake_up_bit(&hdev->flags, HCI_INQUIRY);
if (!test_bit(HCI_MGMT, &hdev->dev_flags))
diff --git a/net/core/dev.c b/net/core/dev.c
index 5b3042e..e14f1cb 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1326,7 +1326,7 @@ static int __dev_close_many(struct list_head *head)
* dev->stop() will invoke napi_disable() on all of it's
* napi_struct instances on this device.
*/
- smp_mb__after_clear_bit(); /* Commit netif_running(). */
+ smp_mb__after_atomic(); /* Commit netif_running(). */
}
dev_deactivate_many(head);
@@ -3343,7 +3343,7 @@ static void net_tx_action(struct softirq_action *h)
root_lock = qdisc_lock(q);
if (spin_trylock(root_lock)) {
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(__QDISC_STATE_SCHED,
&q->state);
qdisc_run(q);
@@ -3353,7 +3353,7 @@ static void net_tx_action(struct softirq_action *h)
&q->state)) {
__netif_reschedule(q);
} else {
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(__QDISC_STATE_SCHED,
&q->state);
}
@@ -4244,7 +4244,7 @@ void __napi_complete(struct napi_struct *n)
BUG_ON(n->gro_list);
list_del(&n->poll_list);
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(NAPI_STATE_SCHED, &n->state);
}
EXPORT_SYMBOL(__napi_complete);
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 9c3a839..bd0767e 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -147,7 +147,7 @@ static void linkwatch_do_dev(struct net_device *dev)
* Make sure the above read is complete since it can be
* rewritten as soon as we clear the bit below.
*/
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
/* We are about to handle this device,
* so new events can be accepted
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 48f4244..56cd458 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -522,7 +522,7 @@ EXPORT_SYMBOL_GPL(inet_getpeer);
void inet_putpeer(struct inet_peer *p)
{
p->dtime = (__u32)jiffies;
- smp_mb__before_atomic_dec();
+ smp_mb__before_atomic();
atomic_dec(&p->refcnt);
}
EXPORT_SYMBOL_GPL(inet_putpeer);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 025e250..366cf06 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1930,10 +1930,8 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
/* It is possible TX completion already happened
* before we set TSQ_THROTTLED, so we must
* test again the condition.
- * We abuse smp_mb__after_clear_bit() because
- * there is no smp_mb__after_set_bit() yet
*/
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
if (atomic_read(&sk->sk_wmem_alloc) > limit)
break;
}
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 75421f2..1f4f954 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -914,7 +914,7 @@ void nf_conntrack_free(struct nf_conn *ct)
nf_ct_ext_destroy(ct);
nf_ct_ext_free(ct);
kmem_cache_free(net->ct.nf_conntrack_cachep, ct);
- smp_mb__before_atomic_dec();
+ smp_mb__before_atomic();
atomic_dec(&net->ct.count);
}
EXPORT_SYMBOL_GPL(nf_conntrack_free);
diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index b7ebe23..d67de45 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -598,7 +598,7 @@ static void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq,
{
atomic64_set(&ic->i_ack_next, seq);
if (ack_required) {
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags);
}
}
@@ -606,7 +606,7 @@ static void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq,
static u64 rds_ib_get_ack(struct rds_ib_connection *ic)
{
clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
return atomic64_read(&ic->i_ack_next);
}
diff --git a/net/rds/iw_recv.c b/net/rds/iw_recv.c
index 4503335..aa8bf67 100644
--- a/net/rds/iw_recv.c
+++ b/net/rds/iw_recv.c
@@ -429,7 +429,7 @@ static void rds_iw_set_ack(struct rds_iw_connection *ic, u64 seq,
{
atomic64_set(&ic->i_ack_next, seq);
if (ack_required) {
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags);
}
}
@@ -437,7 +437,7 @@ static void rds_iw_set_ack(struct rds_iw_connection *ic, u64 seq,
static u64 rds_iw_get_ack(struct rds_iw_connection *ic)
{
clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
return atomic64_read(&ic->i_ack_next);
}
diff --git a/net/rds/send.c b/net/rds/send.c
index a82fb66..2371816 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -107,7 +107,7 @@ static int acquire_in_xmit(struct rds_connection *conn)
static void release_in_xmit(struct rds_connection *conn)
{
clear_bit(RDS_IN_XMIT, &conn->c_flags);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
/*
* We don't use wait_on_bit()/wake_up_bit() because our waking is in a
* hot path and finding waiters is very rare. We don't want to walk
@@ -661,7 +661,7 @@ void rds_send_drop_acked(struct rds_connection *conn, u64 ack,
/* order flag updates with spin locks */
if (!list_empty(&list))
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
spin_unlock_irqrestore(&conn->c_lock, flags);
@@ -691,7 +691,7 @@ void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in *dest)
}
/* order flag updates with the rs lock */
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
spin_unlock_irqrestore(&rs->rs_lock, flags);
diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c
index 81cf5a4..53b17ca 100644
--- a/net/rds/tcp_send.c
+++ b/net/rds/tcp_send.c
@@ -93,7 +93,7 @@ int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
rm->m_ack_seq = tc->t_last_sent_nxt +
sizeof(struct rds_header) +
be32_to_cpu(rm->m_inc.i_hdr.h_len) - 1;
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
set_bit(RDS_MSG_HAS_ACK_SEQ, &rm->m_flags);
tc->t_last_expected_una = rm->m_ack_seq + 1;
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 5285ead..247e973 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -296,7 +296,7 @@ static void
rpcauth_unhash_cred_locked(struct rpc_cred *cred)
{
hlist_del_rcu(&cred->cr_hash);
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags);
}
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 36e431e..b6e440b 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -143,7 +143,7 @@ gss_cred_set_ctx(struct rpc_cred *cred, struct gss_cl_ctx *ctx)
gss_get_ctx(ctx);
rcu_assign_pointer(gss_cred->gc_ctx, ctx);
set_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags);
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(RPCAUTH_CRED_NEW, &cred->cr_flags);
}
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 3513d55..9761a0d 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -244,10 +244,10 @@ void xprt_free_bc_request(struct rpc_rqst *req)
dprintk("RPC: free backchannel req=%p\n", req);
req->rq_connect_cookie = xprt->connect_cookie - 1;
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
WARN_ON_ONCE(!test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
clear_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
if (!xprt_need_to_requeue(xprt)) {
/*
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index d173f79..89d051d 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -230,9 +230,9 @@ static void xprt_clear_locked(struct rpc_xprt *xprt)
{
xprt->snd_task = NULL;
if (!test_bit(XPRT_CLOSE_WAIT, &xprt->state)) {
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(XPRT_LOCKED, &xprt->state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
} else
queue_work(rpciod_workqueue, &xprt->task_cleanup);
}
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 25a3dcf..402a7e9 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -893,11 +893,11 @@ static void xs_close(struct rpc_xprt *xprt)
xs_reset_transport(transport);
xprt->reestablish_timeout = 0;
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
clear_bit(XPRT_CLOSING, &xprt->state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
xprt_disconnect_done(xprt);
}
@@ -1497,12 +1497,12 @@ static void xs_tcp_cancel_linger_timeout(struct rpc_xprt *xprt)
static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt)
{
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
clear_bit(XPRT_CONNECTION_CLOSE, &xprt->state);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
clear_bit(XPRT_CLOSING, &xprt->state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
}
static void xs_sock_mark_closed(struct rpc_xprt *xprt)
@@ -1556,10 +1556,10 @@ static void xs_tcp_state_change(struct sock *sk)
xprt->connect_cookie++;
xprt->reestablish_timeout = 0;
set_bit(XPRT_CLOSING, &xprt->state);
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(XPRT_CONNECTED, &xprt->state);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
xs_tcp_schedule_linger_timeout(xprt, xs_tcp_fin_timeout);
break;
case TCP_CLOSE_WAIT:
@@ -1578,9 +1578,9 @@ static void xs_tcp_state_change(struct sock *sk)
case TCP_LAST_ACK:
set_bit(XPRT_CLOSING, &xprt->state);
xs_tcp_schedule_linger_timeout(xprt, xs_tcp_fin_timeout);
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(XPRT_CONNECTED, &xprt->state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
break;
case TCP_CLOSE:
xs_tcp_cancel_linger_timeout(xprt);
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index bb7e8ba..749f80c 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1207,7 +1207,7 @@ restart:
sk->sk_state = TCP_ESTABLISHED;
sock_hold(newsk);
- smp_mb__after_atomic_inc(); /* sock_hold() does an atomic_inc() */
+ smp_mb__after_atomic(); /* sock_hold() does an atomic_inc() */
unix_peer(sk) = newsk;
unix_state_unlock(sk);
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