net: sched: add support for TCQ_F_NOLOCK subqueues to sch_mqprio
authorJohn Fastabend <john.fastabend@gmail.com>
Thu, 7 Dec 2017 17:57:39 +0000 (09:57 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 8 Dec 2017 18:32:26 +0000 (13:32 -0500)
commitce679e8df7ed2a92660556d100cf370fe22b4eab
tree475427d82e895e9eae204dde17e2ab05204bf1a4
parentb01ac095c740fc21f4bb21abe900b0f5b3042cf9
net: sched: add support for TCQ_F_NOLOCK subqueues to sch_mqprio

The sch_mqprio qdisc creates a sub-qdisc per tx queue which are then
called independently for enqueue and dequeue operations. However
statistics are aggregated and pushed up to the "master" qdisc.

This patch adds support for any of the sub-qdiscs to be per cpu
statistic qdiscs. To handle this case add a check when calculating
stats and aggregate the per cpu stats if needed.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/sch_mq.c
net/sched/sch_mqprio.c