diff options
| author |   WANG Cong <xiyou.wangcong@gmail.com> | 2013-12-15 20:15:09 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-12-18 12:52:07 -0500 |
| commit | 89819dc01f4c5920783f561597a48d9d75220e9e (patch) | |
| tree | 2c37980c3b2cc34fece254b4e15b8fb56a24cead /include/net/act_api.h | |
| parent | net_sched: init struct tcf_hashinfo at register time (diff) | |
| download | linux-dev-89819dc01f4c5920783f561597a48d9d75220e9e.tar.xz linux-dev-89819dc01f4c5920783f561597a48d9d75220e9e.zip | |
net_sched: convert tcf_hashinfo to hlist and use spinlock
So that we don't need to play with singly linked list,
and since the code is not on hot path, we can use spinlock
instead of rwlock.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/act_api.h')
| -rw-r--r-- | include/net/act_api.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h index 2b5ec5abfeb3..22418d1a8396 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -9,7 +9,7 @@ #include <net/pkt_sched.h> struct tcf_common { - struct tcf_common *tcfc_next; + struct hlist_node tcfc_head; u32 tcfc_index; int tcfc_refcnt; int tcfc_bindcnt; @@ -22,7 +22,7 @@ struct tcf_common { spinlock_t tcfc_lock; struct rcu_head tcfc_rcu; }; -#define tcf_next common.tcfc_next +#define tcf_head common.tcfc_head #define tcf_index common.tcfc_index #define tcf_refcnt common.tcfc_refcnt #define tcf_bindcnt common.tcfc_bindcnt @@ -36,9 +36,9 @@ struct tcf_common { #define tcf_rcu common.tcfc_rcu struct tcf_hashinfo { - struct tcf_common **htab; + struct hlist_head *htab; unsigned int hmask; - rwlock_t lock; + spinlock_t lock; }; static inline unsigned int tcf_hash(u32 index, unsigned int hmask) @@ -48,12 +48,16 @@ static inline unsigned int tcf_hash(u32 index, unsigned int hmask) static inline int tcf_hashinfo_init(struct tcf_hashinfo *hf, unsigned int mask) { - rwlock_init(&hf->lock); + int i; + + spin_lock_init(&hf->lock); hf->hmask = mask; - hf->htab = kzalloc((mask + 1) * sizeof(struct tcf_common *), + hf->htab = kzalloc((mask + 1) * sizeof(struct hlist_head), GFP_KERNEL); if (!hf->htab) return -ENOMEM; + for (i = 0; i < mask + 1; i++) + INIT_HLIST_HEAD(&hf->htab[i]); return 0; } |