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[NET_SCHED]: sch_hfsc: use hrtimer based watchdog 

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-03-16 01:19:33 -07:00 committed by David S. Miller
parent 4179477f63
commit ed2b229a97
1 changed files with 7 additions and 25 deletions
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32
net/sched/sch_hfsc.c
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@ -59,7 +59,6 @@
#include <linux/skbuff.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#include <linux/init.h>
@ -192,7 +191,7 @@ struct hfsc_sched
struct list_head droplist; /* active leaf class list (for
dropping) */
struct sk_buff_head requeue; /* requeued packet */
struct timer_list wd_timer; /* watchdog timer */
struct qdisc_watchdog watchdog; /* watchdog timer */
};
#define HT_INFINITY 0xffffffffffffffffULL /* infinite time value */
@ -1434,21 +1433,11 @@ hfsc_walk(struct Qdisc *sch, struct qdisc_walker *arg)
}
static void
hfsc_watchdog(unsigned long arg)
{
struct Qdisc *sch = (struct Qdisc *)arg;
sch->flags &= ~TCQ_F_THROTTLED;
netif_schedule(sch->dev);
}
static void
hfsc_schedule_watchdog(struct Qdisc *sch, u64 cur_time)
hfsc_schedule_watchdog(struct Qdisc *sch)
{
struct hfsc_sched *q = qdisc_priv(sch);
struct hfsc_class *cl;
u64 next_time = 0;
long delay;
if ((cl = eltree_get_minel(q)) != NULL)
next_time = cl->cl_e;
@ -1457,11 +1446,7 @@ hfsc_schedule_watchdog(struct Qdisc *sch, u64 cur_time)
next_time = q->root.cl_cfmin;
}
WARN_ON(next_time == 0);
delay = next_time - cur_time;
delay = PSCHED_US2JIFFIE(delay);
sch->flags |= TCQ_F_THROTTLED;
mod_timer(&q->wd_timer, jiffies + delay);
qdisc_watchdog_schedule(&q->watchdog, next_time);
}
static int
@ -1498,9 +1483,7 @@ hfsc_init_qdisc(struct Qdisc *sch, struct rtattr *opt)
list_add(&q->root.hlist, &q->clhash[hfsc_hash(q->root.classid)]);
init_timer(&q->wd_timer);
q->wd_timer.function = hfsc_watchdog;
q->wd_timer.data = (unsigned long)sch;
qdisc_watchdog_init(&q->watchdog, sch);
return 0;
}
@ -1570,8 +1553,7 @@ hfsc_reset_qdisc(struct Qdisc *sch)
__skb_queue_purge(&q->requeue);
q->eligible = RB_ROOT;
INIT_LIST_HEAD(&q->droplist);
del_timer(&q->wd_timer);
sch->flags &= ~TCQ_F_THROTTLED;
qdisc_watchdog_cancel(&q->watchdog);
sch->q.qlen = 0;
}
@ -1587,7 +1569,7 @@ hfsc_destroy_qdisc(struct Qdisc *sch)
hfsc_destroy_class(sch, cl);
}
__skb_queue_purge(&q->requeue);
del_timer(&q->wd_timer);
qdisc_watchdog_cancel(&q->watchdog);
}
static int
@ -1673,7 +1655,7 @@ hfsc_dequeue(struct Qdisc *sch)
cl = vttree_get_minvt(&q->root, cur_time);
if (cl == NULL) {
sch->qstats.overlimits++;
hfsc_schedule_watchdog(sch, cur_time);
hfsc_schedule_watchdog(sch);
return NULL;
}
}