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Date: Tue, 19 Jun 2007 17:02:21 +0200 (MEST)
From: Patrick McHardy <kaber@...sh.net>
To: davem@...emloft.net
Cc: devik@....cz, netdev@...r.kernel.org,
Patrick McHardy <kaber@...sh.net>
Subject: [NET_SCHED 02/04]: Remove unnecessary stats_lock pointers
[NET_SCHED]: Remove unnecessary stats_lock pointers
Remove stats_lock pointers from qdisc-internal structures, in all cases
it points to dev->queue_lock. The only case where it is necessary is for
top-level qdiscs, where it might also point to dev->ingress_lock in case
of the ingress qdisc. Also remove it from actions completely, it always
points to the actions internal lock.
Signed-off-by: Patrick McHardy <kaber@...sh.net>
---
commit 00b3839a51961a8fda98d3941d0809f16be0ea59
tree 05186e615bc7af5dbe27d634972bcb71e6f10d25
parent 0f93837e26f826f49382b567ef15efe0e4995615
author Patrick McHardy <kaber@...sh.net> Thu, 14 Jun 2007 16:30:09 +0200
committer Patrick McHardy <kaber@...sh.net> Thu, 14 Jun 2007 16:30:09 +0200
include/net/act_api.h | 2 --
net/sched/act_api.c | 7 +++----
net/sched/act_police.c | 8 +++-----
net/sched/sch_atm.c | 1 -
net/sched/sch_cbq.c | 8 +++-----
net/sched/sch_hfsc.c | 10 +++-------
6 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 8b06c2f..2f0273f 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -19,7 +19,6 @@ struct tcf_common {
struct gnet_stats_basic tcfc_bstats;
struct gnet_stats_queue tcfc_qstats;
struct gnet_stats_rate_est tcfc_rate_est;
- spinlock_t *tcfc_stats_lock;
spinlock_t tcfc_lock;
};
#define tcf_next common.tcfc_next
@@ -32,7 +31,6 @@ struct tcf_common {
#define tcf_bstats common.tcfc_bstats
#define tcf_qstats common.tcfc_qstats
#define tcf_rate_est common.tcfc_rate_est
-#define tcf_stats_lock common.tcfc_stats_lock
#define tcf_lock common.tcfc_lock
struct tcf_police {
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 72bb9bd..32cc191 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -230,13 +230,12 @@ struct tcf_common *tcf_hash_create(u32 index, struct rtattr *est, struct tc_acti
p->tcfc_bindcnt = 1;
spin_lock_init(&p->tcfc_lock);
- p->tcfc_stats_lock = &p->tcfc_lock;
p->tcfc_index = index ? index : tcf_hash_new_index(idx_gen, hinfo);
p->tcfc_tm.install = jiffies;
p->tcfc_tm.lastuse = jiffies;
if (est)
gen_new_estimator(&p->tcfc_bstats, &p->tcfc_rate_est,
- p->tcfc_stats_lock, est);
+ &p->tcfc_lock, est);
a->priv = (void *) p;
return p;
}
@@ -595,12 +594,12 @@ int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *a,
if (compat_mode) {
if (a->type == TCA_OLD_COMPAT)
err = gnet_stats_start_copy_compat(skb, 0,
- TCA_STATS, TCA_XSTATS, h->tcf_stats_lock, &d);
+ TCA_STATS, TCA_XSTATS, &h->tcf_lock, &d);
else
return 0;
} else
err = gnet_stats_start_copy(skb, TCA_ACT_STATS,
- h->tcf_stats_lock, &d);
+ &h->tcf_lock, &d);
if (err < 0)
goto errout;
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index 580698d..3e8716d 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -183,7 +183,6 @@ static int tcf_act_police_locate(struct rtattr *rta, struct rtattr *est,
ret = ACT_P_CREATED;
police->tcf_refcnt = 1;
spin_lock_init(&police->tcf_lock);
- police->tcf_stats_lock = &police->tcf_lock;
if (bind)
police->tcf_bindcnt = 1;
override:
@@ -231,7 +230,7 @@ override:
if (est)
gen_replace_estimator(&police->tcf_bstats,
&police->tcf_rate_est,
- police->tcf_stats_lock, est);
+ &police->tcf_lock, est);
spin_unlock_bh(&police->tcf_lock);
if (ret != ACT_P_CREATED)
@@ -450,7 +449,6 @@ struct tcf_police *tcf_police_locate(struct rtattr *rta, struct rtattr *est)
police->tcf_refcnt = 1;
spin_lock_init(&police->tcf_lock);
- police->tcf_stats_lock = &police->tcf_lock;
if (parm->rate.rate) {
police->tcfp_R_tab =
qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE-1]);
@@ -490,7 +488,7 @@ struct tcf_police *tcf_police_locate(struct rtattr *rta, struct rtattr *est)
police->tcf_action = parm->action;
if (est)
gen_new_estimator(&police->tcf_bstats, &police->tcf_rate_est,
- police->tcf_stats_lock, est);
+ &police->tcf_lock, est);
h = tcf_hash(police->tcf_index, POL_TAB_MASK);
write_lock_bh(&police_lock);
police->tcf_next = tcf_police_ht[h];
@@ -591,7 +589,7 @@ int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *police)
struct gnet_dump d;
if (gnet_stats_start_copy_compat(skb, TCA_STATS2, TCA_STATS,
- TCA_XSTATS, police->tcf_stats_lock,
+ TCA_XSTATS, &police->tcf_lock,
&d) < 0)
goto errout;
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index d1c383f..16fe802 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -71,7 +71,6 @@ struct atm_flow_data {
int ref; /* reference count */
struct gnet_stats_basic bstats;
struct gnet_stats_queue qstats;
- spinlock_t *stats_lock;
struct atm_flow_data *next;
struct atm_flow_data *excess; /* flow for excess traffic;
NULL to set CLP instead */
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index bf1ea9e..b093d8f 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -148,7 +148,6 @@ struct cbq_class
struct gnet_stats_basic bstats;
struct gnet_stats_queue qstats;
struct gnet_stats_rate_est rate_est;
- spinlock_t *stats_lock;
struct tc_cbq_xstats xstats;
struct tcf_proto *filter_list;
@@ -1442,7 +1441,6 @@ static int cbq_init(struct Qdisc *sch, struct rtattr *opt)
q->link.ewma_log = TC_CBQ_DEF_EWMA;
q->link.avpkt = q->link.allot/2;
q->link.minidle = -0x7FFFFFFF;
- q->link.stats_lock = &sch->dev->queue_lock;
qdisc_watchdog_init(&q->watchdog, sch);
hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
@@ -1871,7 +1869,8 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct rtattr **t
if (tca[TCA_RATE-1])
gen_replace_estimator(&cl->bstats, &cl->rate_est,
- cl->stats_lock, tca[TCA_RATE-1]);
+ &sch->dev->queue_lock,
+ tca[TCA_RATE-1]);
return 0;
}
@@ -1929,7 +1928,6 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct rtattr **t
cl->allot = parent->allot;
cl->quantum = cl->allot;
cl->weight = cl->R_tab->rate.rate;
- cl->stats_lock = &sch->dev->queue_lock;
sch_tree_lock(sch);
cbq_link_class(cl);
@@ -1959,7 +1957,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct rtattr **t
if (tca[TCA_RATE-1])
gen_new_estimator(&cl->bstats, &cl->rate_est,
- cl->stats_lock, tca[TCA_RATE-1]);
+ &sch->dev->queue_lock, tca[TCA_RATE-1]);
*arg = (unsigned long)cl;
return 0;
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 7ccdf63..7130a24 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -122,7 +122,6 @@ struct hfsc_class
struct gnet_stats_basic bstats;
struct gnet_stats_queue qstats;
struct gnet_stats_rate_est rate_est;
- spinlock_t *stats_lock;
unsigned int level; /* class level in hierarchy */
struct tcf_proto *filter_list; /* filter list */
unsigned int filter_cnt; /* filter count */
@@ -1056,7 +1055,8 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
if (tca[TCA_RATE-1])
gen_replace_estimator(&cl->bstats, &cl->rate_est,
- cl->stats_lock, tca[TCA_RATE-1]);
+ &sch->dev->queue_lock,
+ tca[TCA_RATE-1]);
return 0;
}
@@ -1096,7 +1096,6 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
cl->qdisc = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid);
if (cl->qdisc == NULL)
cl->qdisc = &noop_qdisc;
- cl->stats_lock = &sch->dev->queue_lock;
INIT_LIST_HEAD(&cl->children);
cl->vt_tree = RB_ROOT;
cl->cf_tree = RB_ROOT;
@@ -1112,7 +1111,7 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
if (tca[TCA_RATE-1])
gen_new_estimator(&cl->bstats, &cl->rate_est,
- cl->stats_lock, tca[TCA_RATE-1]);
+ &sch->dev->queue_lock, tca[TCA_RATE-1]);
*arg = (unsigned long)cl;
return 0;
}
@@ -1440,8 +1439,6 @@ hfsc_init_qdisc(struct Qdisc *sch, struct rtattr *opt)
return -EINVAL;
qopt = RTA_DATA(opt);
- sch->stats_lock = &sch->dev->queue_lock;
-
q->defcls = qopt->defcls;
for (i = 0; i < HFSC_HSIZE; i++)
INIT_LIST_HEAD(&q->clhash[i]);
@@ -1456,7 +1453,6 @@ hfsc_init_qdisc(struct Qdisc *sch, struct rtattr *opt)
sch->handle);
if (q->root.qdisc == NULL)
q->root.qdisc = &noop_qdisc;
- q->root.stats_lock = &sch->dev->queue_lock;
INIT_LIST_HEAD(&q->root.children);
q->root.vt_tree = RB_ROOT;
q->root.cf_tree = RB_ROOT;
-
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