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[NET_SCHED]: Remove unnecessary stats_lock pointers

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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@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-07-02 22:47:37 -07:00 committed by David S. Miller
parent 876d48aabf
commit 4bdf39911e
6 changed files with 12 additions and 24 deletions
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2
include/net/act_api.h
View File

@ -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 {

7
net/sched/act_api.c
View File

@ -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;

8
net/sched/act_police.c
View File

@ -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;

1
net/sched/sch_atm.c
View File

@ -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 */

8
net/sched/sch_cbq.c
View File

@ -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;

10
net/sched/sch_hfsc.c
View File

@ -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;