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| author | John Fastabend <john.fastabend@gmail.com> | 2017-12-07 09:55:26 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-08 13:32:25 -0500 |
| commit | d59f5ffa59d80ff3a2f3b56a9acea4310974c6d1 (patch) | |
| tree | d417c8c5ee7b98f53afe0cd65d106b4af40cd5d2 /net | |
| parent | 40bd036219dca86938fd5bd84b3fc19ffa812596 (diff) | |
| download | linux-d59f5ffa59d80ff3a2f3b56a9acea4310974c6d1.tar.gz linux-d59f5ffa59d80ff3a2f3b56a9acea4310974c6d1.tar.bz2 linux-d59f5ffa59d80ff3a2f3b56a9acea4310974c6d1.zip | |
net: sched: a dflt qdisc may be used with per cpu stats
Enable dflt qdisc support for per cpu stats before this patch a dflt
qdisc was required to use the global statistics qstats and bstats.
This adds a static flags field to qdisc_ops that is propagated
into qdisc->flags in qdisc allocate call. This allows the allocation
block to completely allocate the qdisc object so we don't have
dangling allocations after qdisc init.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sched/sch_generic.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index cbc0a9a00e30..80e4ae3ad693 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -632,6 +632,19 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, qdisc_skb_head_init(&sch->q); spin_lock_init(&sch->q.lock); + if (ops->static_flags & TCQ_F_CPUSTATS) { + sch->cpu_bstats = + netdev_alloc_pcpu_stats(struct gnet_stats_basic_cpu); + if (!sch->cpu_bstats) + goto errout1; + + sch->cpu_qstats = alloc_percpu(struct gnet_stats_queue); + if (!sch->cpu_qstats) { + free_percpu(sch->cpu_bstats); + goto errout1; + } + } + spin_lock_init(&sch->busylock); lockdep_set_class(&sch->busylock, dev->qdisc_tx_busylock ?: &qdisc_tx_busylock); @@ -641,6 +654,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, dev->qdisc_running_key ?: &qdisc_running_key); sch->ops = ops; + sch->flags = ops->static_flags; sch->enqueue = ops->enqueue; sch->dequeue = ops->dequeue; sch->dev_queue = dev_queue; @@ -648,6 +662,8 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, refcount_set(&sch->refcnt, 1); return sch; +errout1: + kfree(p); errout: return ERR_PTR(err); } |