net/sched: sch_cbq: Delete unused delay_timer

delay_timer has been unused since commit c3498d34dd36 ("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>

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 02d9f0d..599e26f 100644 (file)
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -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)