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mq, mqprio: Use gnet_stats_add_queue().

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gnet_stats_add_basic() and gnet_stats_add_queue() add up the statistics
so they can be used directly for both the per-CPU and global case.

gnet_stats_add_queue() copies either Qdisc's per-CPU
gnet_stats_queue::qlen or the global member. The global
gnet_stats_queue::qlen isn't touched in the per-CPU case so there is no
need to consider it in the global-case.

In the per-CPU case, the sum of global gnet_stats_queue::qlen and
the per-CPU gnet_stats_queue::qlen was assigned to sch->q.qlen and
sch->qstats.qlen. Now both fields are copied individually.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sebastian Andrzej Siewior 2021-10-16 10:49:04 +02:00 committed by David S. Miller
parent 448e163f8b
commit 7361df4606
2 changed files with 17 additions and 56 deletions
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24
net/sched/sch_mq.c
View File

@ -130,7 +130,6 @@ static int mq_dump(struct Qdisc *sch, struct sk_buff *skb)
struct net_device *dev = qdisc_dev(sch);
struct Qdisc *qdisc;
unsigned int ntx;
__u32 qlen = 0;
sch->q.qlen = 0;
memset(&sch->bstats, 0, sizeof(sch->bstats));
@ -145,24 +144,11 @@ static int mq_dump(struct Qdisc *sch, struct sk_buff *skb)
qdisc = netdev_get_tx_queue(dev, ntx)->qdisc_sleeping;
spin_lock_bh(qdisc_lock(qdisc));
if (qdisc_is_percpu_stats(qdisc)) {
qlen = qdisc_qlen_sum(qdisc);
gnet_stats_add_basic(NULL, &sch->bstats,
qdisc->cpu_bstats, &qdisc->bstats);
__gnet_stats_copy_queue(&sch->qstats,
qdisc->cpu_qstats,
&qdisc->qstats, qlen);
sch->q.qlen += qlen;
} else {
sch->q.qlen += qdisc->q.qlen;
sch->bstats.bytes += qdisc->bstats.bytes;
sch->bstats.packets += qdisc->bstats.packets;
sch->qstats.qlen += qdisc->qstats.qlen;
sch->qstats.backlog += qdisc->qstats.backlog;
sch->qstats.drops += qdisc->qstats.drops;
sch->qstats.requeues += qdisc->qstats.requeues;
sch->qstats.overlimits += qdisc->qstats.overlimits;
}
gnet_stats_add_basic(NULL, &sch->bstats, qdisc->cpu_bstats,
&qdisc->bstats);
gnet_stats_add_queue(&sch->qstats, qdisc->cpu_qstats,
&qdisc->qstats);
sch->q.qlen += qdisc_qlen(qdisc);
spin_unlock_bh(qdisc_lock(qdisc));
}

49
net/sched/sch_mqprio.c
View File

@ -402,24 +402,11 @@ static int mqprio_dump(struct Qdisc *sch, struct sk_buff *skb)
qdisc = netdev_get_tx_queue(dev, ntx)->qdisc_sleeping;
spin_lock_bh(qdisc_lock(qdisc));
if (qdisc_is_percpu_stats(qdisc)) {
__u32 qlen = qdisc_qlen_sum(qdisc);
gnet_stats_add_basic(NULL, &sch->bstats,
qdisc->cpu_bstats, &qdisc->bstats);
__gnet_stats_copy_queue(&sch->qstats,
qdisc->cpu_qstats,
&qdisc->qstats, qlen);
sch->q.qlen += qlen;
} else {
sch->q.qlen += qdisc->q.qlen;
sch->bstats.bytes += qdisc->bstats.bytes;
sch->bstats.packets += qdisc->bstats.packets;
sch->qstats.backlog += qdisc->qstats.backlog;
sch->qstats.drops += qdisc->qstats.drops;
sch->qstats.requeues += qdisc->qstats.requeues;
sch->qstats.overlimits += qdisc->qstats.overlimits;
}
gnet_stats_add_basic(NULL, &sch->bstats, qdisc->cpu_bstats,
&qdisc->bstats);
gnet_stats_add_queue(&sch->qstats, qdisc->cpu_qstats,
&qdisc->qstats);
sch->q.qlen += qdisc_qlen(qdisc);
spin_unlock_bh(qdisc_lock(qdisc));
}
@ -511,7 +498,7 @@ static int mqprio_dump_class_stats(struct Qdisc *sch, unsigned long cl,
{
if (cl >= TC_H_MIN_PRIORITY) {
int i;
__u32 qlen = 0;
__u32 qlen;
struct gnet_stats_queue qstats = {0};
struct gnet_stats_basic_packed bstats = {0};
struct net_device *dev = qdisc_dev(sch);
@ -531,27 +518,15 @@ static int mqprio_dump_class_stats(struct Qdisc *sch, unsigned long cl,
spin_lock_bh(qdisc_lock(qdisc));
if (qdisc_is_percpu_stats(qdisc)) {
qlen = qdisc_qlen_sum(qdisc);
gnet_stats_add_basic(NULL, &bstats, qdisc->cpu_bstats,
&qdisc->bstats);
gnet_stats_add_queue(&qstats, qdisc->cpu_qstats,
&qdisc->qstats);
sch->q.qlen += qdisc_qlen(qdisc);
gnet_stats_add_basic(NULL, &bstats,
qdisc->cpu_bstats,
&qdisc->bstats);
__gnet_stats_copy_queue(&qstats,
qdisc->cpu_qstats,
&qdisc->qstats,
qlen);
} else {
qlen += qdisc->q.qlen;
bstats.bytes += qdisc->bstats.bytes;
bstats.packets += qdisc->bstats.packets;
qstats.backlog += qdisc->qstats.backlog;
qstats.drops += qdisc->qstats.drops;
qstats.requeues += qdisc->qstats.requeues;
qstats.overlimits += qdisc->qstats.overlimits;
}
spin_unlock_bh(qdisc_lock(qdisc));
}
qlen = qdisc_qlen(sch) + qstats.qlen;
/* Reclaim root sleeping lock before completing stats */
if (d->lock)