From 78a5b30b7324b2d66bcf7d2e3935877d3c26497c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 16 Jul 2008 03:12:24 -0700 Subject: [PATCH] pkt_sched: Rework {sch,tbf}_tree_lock(). Make sch_tree_lock() lock the qdisc's root. All of the users hold the RTNL semaphore and the root qdisc is not changing. Implement tbf_tree_{lock,unlock}() simply in terms of sch_tree_{lock,unlock}(). Signed-off-by: David S. Miller --- include/net/sch_generic.h | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 3cc4b5cd8c6a..60e1e9f9e453 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -183,10 +183,18 @@ static inline struct net_device *qdisc_dev(struct Qdisc *qdisc) extern void qdisc_lock_tree(struct net_device *dev); extern void qdisc_unlock_tree(struct net_device *dev); -#define sch_tree_lock(q) qdisc_lock_tree(qdisc_dev(q)) -#define sch_tree_unlock(q) qdisc_unlock_tree(qdisc_dev(q)) -#define tcf_tree_lock(tp) qdisc_lock_tree(qdisc_dev((tp)->q)) -#define tcf_tree_unlock(tp) qdisc_unlock_tree(qdisc_dev((tp)->q)) +static inline void sch_tree_lock(struct Qdisc *q) +{ + spin_lock_bh(qdisc_root_lock(q)); +} + +static inline void sch_tree_unlock(struct Qdisc *q) +{ + spin_unlock_bh(qdisc_root_lock(q)); +} + +#define tcf_tree_lock(tp) sch_tree_lock((tp)->q) +#define tcf_tree_unlock(tp) sch_tree_unlock((tp)->q) extern struct Qdisc noop_qdisc; extern struct Qdisc_ops noop_qdisc_ops; -- 2.39.2