From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: [PATCH tip/core/rcu 33/41] net/bridge: Replace call_rcu_bh() and rcu_barrier_bh() Date: Sun, 11 Nov 2018 11:44:02 -0800 Message-ID: <20181111194410.6368-33-paulmck@linux.ibm.com> References: <20181111194104.GA4787@linux.ibm.com> Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" , Roopa Prabhu , Nikolay Aleksandrov , "David S. Miller" , bridge@lists.linux-foundation.org, netdev@vger.kernel.org To: linux-kernel@vger.kernel.org Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:38610 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727004AbeKLFdq (ORCPT ); Mon, 12 Nov 2018 00:33:46 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wABJiIAX049427 for ; Sun, 11 Nov 2018 14:44:20 -0500 Received: from e11.ny.us.ibm.com (e11.ny.us.ibm.com [129.33.205.201]) by mx0b-001b2d01.pphosted.com with ESMTP id 2npd3ut91w-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sun, 11 Nov 2018 14:44:19 -0500 Received: from localhost by e11.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 11 Nov 2018 19:44:19 -0000 In-Reply-To: <20181111194104.GA4787@linux.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: Now that call_rcu()'s callback is not invoked until after all bh-disable regions of code have completed (in addition to explicitly marked RCU read-side critical sections), call_rcu() can be used in place of call_rcu_bh(). Similarly, rcu_barrier() can be used in place of rcu_barrier_bh(). This commit therefore makes these changes. Signed-off-by: Paul E. McKenney Cc: Roopa Prabhu Cc: Nikolay Aleksandrov Cc: "David S. Miller" Cc: Cc: --- net/bridge/br_mdb.c | 2 +- net/bridge/br_multicast.c | 14 +++++++------- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index a7ea2d431714..596ec6e7df11 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -728,7 +728,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry) rcu_assign_pointer(*pp, p->next); hlist_del_init(&p->mglist); del_timer(&p->timer); - call_rcu_bh(&p->rcu, br_multicast_free_pg); + call_rcu(&p->rcu, br_multicast_free_pg); err = 0; if (!mp->ports && !mp->host_joined && diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 6bac0d6b7b94..0255223f2001 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -260,7 +260,7 @@ static void br_multicast_group_expired(struct timer_list *t) hlist_del_rcu(&mp->hlist[mdb->ver]); mdb->size--; - call_rcu_bh(&mp->rcu, br_multicast_free_group); + call_rcu(&mp->rcu, br_multicast_free_group); out: spin_unlock(&br->multicast_lock); @@ -291,7 +291,7 @@ static void br_multicast_del_pg(struct net_bridge *br, del_timer(&p->timer); br_mdb_notify(br->dev, p->port, &pg->addr, RTM_DELMDB, p->flags); - call_rcu_bh(&p->rcu, br_multicast_free_pg); + call_rcu(&p->rcu, br_multicast_free_pg); if (!mp->ports && !mp->host_joined && netif_running(br->dev)) @@ -358,7 +358,7 @@ static int br_mdb_rehash(struct net_bridge_mdb_htable __rcu **mdbp, int max, } br_mdb_rehash_seq++; - call_rcu_bh(&mdb->rcu, br_mdb_free); + call_rcu(&mdb->rcu, br_mdb_free); out: rcu_assign_pointer(*mdbp, mdb); @@ -1629,7 +1629,7 @@ br_multicast_leave_group(struct net_bridge *br, rcu_assign_pointer(*pp, p->next); hlist_del_init(&p->mglist); del_timer(&p->timer); - call_rcu_bh(&p->rcu, br_multicast_free_pg); + call_rcu(&p->rcu, br_multicast_free_pg); br_mdb_notify(br->dev, port, group, RTM_DELMDB, p->flags); @@ -2051,19 +2051,19 @@ void br_multicast_dev_del(struct net_bridge *br) hlist_for_each_entry_safe(mp, n, &mdb->mhash[i], hlist[ver]) { del_timer(&mp->timer); - call_rcu_bh(&mp->rcu, br_multicast_free_group); + call_rcu(&mp->rcu, br_multicast_free_group); } } if (mdb->old) { spin_unlock_bh(&br->multicast_lock); - rcu_barrier_bh(); + rcu_barrier(); spin_lock_bh(&br->multicast_lock); WARN_ON(mdb->old); } mdb->old = mdb; - call_rcu_bh(&mdb->rcu, br_mdb_free); + call_rcu(&mdb->rcu, br_mdb_free); out: spin_unlock_bh(&br->multicast_lock); -- 2.17.1