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From: Vlad Buslov <vladbu@mellanox.com>
To: netdev@vger.kernel.org
Cc: jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us,
	davem@davemloft.net, linux-kernel@vger.kernel.org,
	Vlad Buslov <vladbu@mellanox.com>
Subject: [PATCH] net: sched: don't disable bh when accessing action idr
Date: Fri, 18 May 2018 18:45:24 +0300	[thread overview]
Message-ID: <1526658324-6570-1-git-send-email-vladbu@mellanox.com> (raw)

Underlying implementation of action map has changed and doesn't require
disabling bh anymore. Replace all action idr spinlock usage with regular
calls that do not disable bh.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
---
 net/sched/act_api.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 72251241..3f4cf93 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -77,9 +77,9 @@ static void free_tcf(struct tc_action *p)
 
 static void tcf_idr_remove(struct tcf_idrinfo *idrinfo, struct tc_action *p)
 {
-	spin_lock_bh(&idrinfo->lock);
+	spin_lock(&idrinfo->lock);
 	idr_remove(&idrinfo->action_idr, p->tcfa_index);
-	spin_unlock_bh(&idrinfo->lock);
+	spin_unlock(&idrinfo->lock);
 	gen_kill_estimator(&p->tcfa_rate_est);
 	free_tcf(p);
 }
@@ -156,7 +156,7 @@ static int tcf_dump_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
 	struct tc_action *p;
 	unsigned long id = 1;
 
-	spin_lock_bh(&idrinfo->lock);
+	spin_lock(&idrinfo->lock);
 
 	s_i = cb->args[0];
 
@@ -191,7 +191,7 @@ static int tcf_dump_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
 	if (index >= 0)
 		cb->args[0] = index + 1;
 
-	spin_unlock_bh(&idrinfo->lock);
+	spin_unlock(&idrinfo->lock);
 	if (n_i) {
 		if (act_flags & TCA_FLAG_LARGE_DUMP_ON)
 			cb->args[1] = n_i;
@@ -261,9 +261,9 @@ static struct tc_action *tcf_idr_lookup(u32 index, struct tcf_idrinfo *idrinfo)
 {
 	struct tc_action *p = NULL;
 
-	spin_lock_bh(&idrinfo->lock);
+	spin_lock(&idrinfo->lock);
 	p = idr_find(&idrinfo->action_idr, index);
-	spin_unlock_bh(&idrinfo->lock);
+	spin_unlock(&idrinfo->lock);
 
 	return p;
 }
@@ -323,7 +323,7 @@ int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
 	}
 	spin_lock_init(&p->tcfa_lock);
 	idr_preload(GFP_KERNEL);
-	spin_lock_bh(&idrinfo->lock);
+	spin_lock(&idrinfo->lock);
 	/* user doesn't specify an index */
 	if (!index) {
 		index = 1;
@@ -331,7 +331,7 @@ int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
 	} else {
 		err = idr_alloc_u32(idr, NULL, &index, index, GFP_ATOMIC);
 	}
-	spin_unlock_bh(&idrinfo->lock);
+	spin_unlock(&idrinfo->lock);
 	idr_preload_end();
 	if (err)
 		goto err3;
@@ -369,9 +369,9 @@ void tcf_idr_insert(struct tc_action_net *tn, struct tc_action *a)
 {
 	struct tcf_idrinfo *idrinfo = tn->idrinfo;
 
-	spin_lock_bh(&idrinfo->lock);
+	spin_lock(&idrinfo->lock);
 	idr_replace(&idrinfo->action_idr, a, a->tcfa_index);
-	spin_unlock_bh(&idrinfo->lock);
+	spin_unlock(&idrinfo->lock);
 }
 EXPORT_SYMBOL(tcf_idr_insert);
 
-- 
2.7.5

             reply	other threads:[~2018-05-18 15:45 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-18 15:45 Vlad Buslov [this message]
2018-05-19  2:59 ` [PATCH] net: sched: don't disable bh when accessing action idr Cong Wang
2018-05-19 10:12   ` Vlad Buslov
2018-05-20  3:02     ` David Miller
2018-05-21 20:03       ` [PATCH net-next v2] " Vlad Buslov
2018-05-22 12:50         ` Jamal Hadi Salim
2018-05-23  1:10         ` Cong Wang
2018-05-23  6:57           ` Vlad Buslov
2018-05-23  7:32         ` Jiri Pirko
2018-05-23  8:52           ` [PATCH net-next v3] " Vlad Buslov
2018-05-23 23:14             ` Cong Wang
2018-05-24 16:54               ` Vlad Buslov

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