From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_SBL,URIBL_SBL_A,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49A2EC10F14 for ; Thu, 3 Oct 2019 01:43:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 167DA222C2 for ; Thu, 3 Oct 2019 01:43:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570067014; bh=cJ0IjaA90csRKxjxaCP3JNF49foRVRi6wMQidNae72o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=SANh+REirPmhXsHTvSV2n3hup61M0ud7u5dOpcR7qVtU9sc4+0+CyX9bbdDIggPWY UUe09UQAmWDqbmr3phSv1t+yTnQGQOi4gJVPUgOVLglT0DTdjEh9mkUKLKThf2G2Xv xP4afSqRkpRrr0fTdC/Q7C3DS/yoLF9iwg9ukDEE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728092AbfJCBnd (ORCPT ); Wed, 2 Oct 2019 21:43:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:46640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727451AbfJCBnQ (ORCPT ); Wed, 2 Oct 2019 21:43:16 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CF9F3222CC; Thu, 3 Oct 2019 01:43:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570066995; bh=cJ0IjaA90csRKxjxaCP3JNF49foRVRi6wMQidNae72o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MR6P6MZ7Ui1QVG/sPS1nuHSiYrC0YOOVUENvdG29pRHTxeezBDgSfmeo9qnPOVJ0f oxi+MbEONZfsiet+0vayRYbwuyXh+2IogavkdUsB97obRxr8gticH3A02iypEomI1T UhXhE8ALBWwmWUTu74nlpSko6btoRakpbbw+Flx4= From: paulmck@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, 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" , Jamal Hadi Salim , Cong Wang , Jiri Pirko , "David S. Miller" , netdev@vger.kernel.org Subject: [PATCH tip/core/rcu 9/9] net/sched: Replace rcu_swap_protected() with rcu_replace() Date: Wed, 2 Oct 2019 18:43:10 -0700 Message-Id: <20191003014310.13262-9-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191003014153.GA13156@paulmck-ThinkPad-P72> References: <20191003014153.GA13156@paulmck-ThinkPad-P72> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: "Paul E. McKenney" This commit replaces the use of rcu_swap_protected() with the more intuitively appealing rcu_replace() as a step towards removing rcu_swap_protected(). Link: https://lore.kernel.org/lkml/CAHk-=wiAsJLw1egFEE=Z7-GGtM6wcvtyytXZA1+BHqta4gg6Hw@mail.gmail.com/ Reported-by: Linus Torvalds Signed-off-by: Paul E. McKenney Cc: Jamal Hadi Salim Cc: Cong Wang Cc: Jiri Pirko Cc: "David S. Miller" Cc: Cc: --- net/sched/act_api.c | 2 +- net/sched/act_csum.c | 4 ++-- net/sched/act_ct.c | 2 +- net/sched/act_ctinfo.c | 4 ++-- net/sched/act_ife.c | 2 +- net/sched/act_mirred.c | 4 ++-- net/sched/act_mpls.c | 2 +- net/sched/act_police.c | 6 +++--- net/sched/act_skbedit.c | 4 ++-- net/sched/act_tunnel_key.c | 4 ++-- net/sched/act_vlan.c | 2 +- 11 files changed, 18 insertions(+), 18 deletions(-) diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 2558f00..1ab810c 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -88,7 +88,7 @@ struct tcf_chain *tcf_action_set_ctrlact(struct tc_action *a, int action, struct tcf_chain *goto_chain) { a->tcfa_action = action; - rcu_swap_protected(a->goto_chain, goto_chain, 1); + goto_chain = rcu_replace(a->goto_chain, goto_chain, 1); return goto_chain; } EXPORT_SYMBOL(tcf_action_set_ctrlact); diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c index d3cfad8..ced5fe6 100644 --- a/net/sched/act_csum.c +++ b/net/sched/act_csum.c @@ -101,8 +101,8 @@ static int tcf_csum_init(struct net *net, struct nlattr *nla, spin_lock_bh(&p->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(p->params, params_new, - lockdep_is_held(&p->tcf_lock)); + params_new = rcu_replace(p->params, params_new, + lockdep_is_held(&p->tcf_lock)); spin_unlock_bh(&p->tcf_lock); if (goto_ch) diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index fcc4602..500e874 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -722,7 +722,7 @@ static int tcf_ct_init(struct net *net, struct nlattr *nla, spin_lock_bh(&c->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(c->params, params, lockdep_is_held(&c->tcf_lock)); + params = rcu_replace(c->params, params, lockdep_is_held(&c->tcf_lock)); spin_unlock_bh(&c->tcf_lock); if (goto_ch) diff --git a/net/sched/act_ctinfo.c b/net/sched/act_ctinfo.c index 0dbcfd1..e6ea270 100644 --- a/net/sched/act_ctinfo.c +++ b/net/sched/act_ctinfo.c @@ -257,8 +257,8 @@ static int tcf_ctinfo_init(struct net *net, struct nlattr *nla, spin_lock_bh(&ci->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, actparm->action, goto_ch); - rcu_swap_protected(ci->params, cp_new, - lockdep_is_held(&ci->tcf_lock)); + cp_new = rcu_replace(ci->params, cp_new, + lockdep_is_held(&ci->tcf_lock)); spin_unlock_bh(&ci->tcf_lock); if (goto_ch) diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c index 3a31e24..a6a60b8 100644 --- a/net/sched/act_ife.c +++ b/net/sched/act_ife.c @@ -594,7 +594,7 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla, spin_lock_bh(&ife->tcf_lock); /* protected by tcf_lock when modifying existing action */ goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(ife->params, p, 1); + p = rcu_replace(ife->params, p, 1); if (exists) spin_unlock_bh(&ife->tcf_lock); diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c index 9ce073a..1ed5d7e 100644 --- a/net/sched/act_mirred.c +++ b/net/sched/act_mirred.c @@ -178,8 +178,8 @@ static int tcf_mirred_init(struct net *net, struct nlattr *nla, goto put_chain; } mac_header_xmit = dev_is_mac_header_xmit(dev); - rcu_swap_protected(m->tcfm_dev, dev, - lockdep_is_held(&m->tcf_lock)); + dev = rcu_replace(m->tcfm_dev, dev, + lockdep_is_held(&m->tcf_lock)); if (dev) dev_put(dev); m->tcfm_mac_header_xmit = mac_header_xmit; diff --git a/net/sched/act_mpls.c b/net/sched/act_mpls.c index e168df0..cea8771 100644 --- a/net/sched/act_mpls.c +++ b/net/sched/act_mpls.c @@ -258,7 +258,7 @@ static int tcf_mpls_init(struct net *net, struct nlattr *nla, spin_lock_bh(&m->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(m->mpls_p, p, lockdep_is_held(&m->tcf_lock)); + p = rcu_replace(m->mpls_p, p, lockdep_is_held(&m->tcf_lock)); spin_unlock_bh(&m->tcf_lock); if (goto_ch) diff --git a/net/sched/act_police.c b/net/sched/act_police.c index 89c04c5..02a4bc9c 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -191,9 +191,9 @@ static int tcf_police_init(struct net *net, struct nlattr *nla, police->tcfp_ptoks = new->tcfp_mtu_ptoks; spin_unlock_bh(&police->tcfp_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(police->params, - new, - lockdep_is_held(&police->tcf_lock)); + new = rcu_replace(police->params, + new, + lockdep_is_held(&police->tcf_lock)); spin_unlock_bh(&police->tcf_lock); if (goto_ch) diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c index 6a8d333..6c4bd47 100644 --- a/net/sched/act_skbedit.c +++ b/net/sched/act_skbedit.c @@ -206,8 +206,8 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla, spin_lock_bh(&d->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(d->params, params_new, - lockdep_is_held(&d->tcf_lock)); + params_new = rcu_replace(d->params, params_new, + lockdep_is_held(&d->tcf_lock)); spin_unlock_bh(&d->tcf_lock); if (params_new) kfree_rcu(params_new, rcu); diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c index 2f83a79..7130da8 100644 --- a/net/sched/act_tunnel_key.c +++ b/net/sched/act_tunnel_key.c @@ -381,8 +381,8 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla, spin_lock_bh(&t->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(t->params, params_new, - lockdep_is_held(&t->tcf_lock)); + params_new = rcu_replace(t->params, params_new, + lockdep_is_held(&t->tcf_lock)); spin_unlock_bh(&t->tcf_lock); tunnel_key_release_params(params_new); if (goto_ch) diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c index 08aaf71..402c9ea 100644 --- a/net/sched/act_vlan.c +++ b/net/sched/act_vlan.c @@ -220,7 +220,7 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla, spin_lock_bh(&v->tcf_lock); goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); - rcu_swap_protected(v->vlan_p, p, lockdep_is_held(&v->tcf_lock)); + p = rcu_replace(v->vlan_p, p, lockdep_is_held(&v->tcf_lock)); spin_unlock_bh(&v->tcf_lock); if (goto_ch) -- 2.9.5