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net/sched: sch_cbq: Delete unused delay_timer

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delay_timer has been unused since commit c3498d34dd ("cbq: remove
TCA_CBQ_OVL_STRATEGY support").  Delete it.

Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peilin Ye 2022-07-13 13:40:51 -07:00 committed by David S. Miller
parent c8fda7d281
commit 88b3822cdf
1 changed files with 0 additions and 79 deletions
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79
net/sched/sch_cbq.c
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@ -149,7 +149,6 @@ struct cbq_sched_data {
psched_time_t now; /* Cached timestamp */
unsigned int pmask;
struct hrtimer delay_timer;
struct qdisc_watchdog watchdog; /* Watchdog timer,
started when CBQ has
backlog, but cannot
@ -441,81 +440,6 @@ static void cbq_overlimit(struct cbq_class *cl)
}
}
static psched_tdiff_t cbq_undelay_prio(struct cbq_sched_data *q, int prio,
psched_time_t now)
{
struct cbq_class *cl;
struct cbq_class *cl_prev = q->active[prio];
psched_time_t sched = now;
if (cl_prev == NULL)
return 0;
do {
cl = cl_prev->next_alive;
if (now - cl->penalized > 0) {
cl_prev->next_alive = cl->next_alive;
cl->next_alive = NULL;
cl->cpriority = cl->priority;
cl->delayed = 0;
cbq_activate_class(cl);
if (cl == q->active[prio]) {
q->active[prio] = cl_prev;
if (cl == q->active[prio]) {
q->active[prio] = NULL;
return 0;
}
}
cl = cl_prev->next_alive;
} else if (sched - cl->penalized > 0)
sched = cl->penalized;
} while ((cl_prev = cl) != q->active[prio]);
return sched - now;
}
static enum hrtimer_restart cbq_undelay(struct hrtimer *timer)
{
struct cbq_sched_data *q = container_of(timer, struct cbq_sched_data,
delay_timer);
struct Qdisc *sch = q->watchdog.qdisc;
psched_time_t now;
psched_tdiff_t delay = 0;
unsigned int pmask;
now = psched_get_time();
pmask = q->pmask;
q->pmask = 0;
while (pmask) {
int prio = ffz(~pmask);
psched_tdiff_t tmp;
pmask &= ~(1<<prio);
tmp = cbq_undelay_prio(q, prio, now);
if (tmp > 0) {
q->pmask |= 1<<prio;
if (tmp < delay || delay == 0)
delay = tmp;
}
}
if (delay) {
ktime_t time;
time = 0;
time = ktime_add_ns(time, PSCHED_TICKS2NS(now + delay));
hrtimer_start(&q->delay_timer, time, HRTIMER_MODE_ABS_PINNED);
}
__netif_schedule(qdisc_root(sch));
return HRTIMER_NORESTART;
}
/*
* It is mission critical procedure.
*
@ -1034,7 +958,6 @@ cbq_reset(struct Qdisc *sch)
q->tx_class = NULL;
q->tx_borrowed = NULL;
qdisc_watchdog_cancel(&q->watchdog);
hrtimer_cancel(&q->delay_timer);
q->toplevel = TC_CBQ_MAXLEVEL;
q->now = psched_get_time();
@ -1162,8 +1085,6 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt,
int err;
qdisc_watchdog_init(&q->watchdog, sch);
hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED);
q->delay_timer.function = cbq_undelay;
err = cbq_opt_parse(tb, opt, extack);
if (err < 0)