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authorviresh kumar <viresh.kumar@linaro.org>2014-01-22 10:53:33 +0400
committerDavid S. Miller <davem@davemloft.net>2014-01-23 09:57:05 +0400
commitf618002b0b598036ebb8feceb44ea8e05f4cd37b (patch)
tree0273785b7340ba3490ae27afae6f8dc320fa2070
parent906e073f3e842877b59d669b25aa76f65ba775b3 (diff)
downloadlinux-f618002b0b598036ebb8feceb44ea8e05f4cd37b.tar.xz
net/neighbour: queue work on power efficient wq
Workqueue used in neighbour layer have no real dependency of scheduling these on the cpu which scheduled them. On a idle system, it is observed that an idle cpu wakes up many times just to service this work. It would be better if we can schedule it on a cpu which the scheduler believes to be the most appropriate one. This patch replaces normal workqueues with power efficient versions. This doesn't change existing behavior of code unless CONFIG_WQ_POWER_EFFICIENT is enabled. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/neighbour.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index f8012feddf6d..b9e9e0d38672 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -828,7 +828,7 @@ out:
* ARP entry timeouts range from 1/2 BASE_REACHABLE_TIME to 3/2
* BASE_REACHABLE_TIME.
*/
- schedule_delayed_work(&tbl->gc_work,
+ queue_delayed_work(system_power_efficient_wq, &tbl->gc_work,
NEIGH_VAR(&tbl->parms, BASE_REACHABLE_TIME) >> 1);
write_unlock_bh(&tbl->lock);
}
@@ -1565,7 +1565,8 @@ static void neigh_table_init_no_netlink(struct neigh_table *tbl)
rwlock_init(&tbl->lock);
INIT_DEFERRABLE_WORK(&tbl->gc_work, neigh_periodic_work);
- schedule_delayed_work(&tbl->gc_work, tbl->parms.reachable_time);
+ queue_delayed_work(system_power_efficient_wq, &tbl->gc_work,
+ tbl->parms.reachable_time);
setup_timer(&tbl->proxy_timer, neigh_proxy_process, (unsigned long)tbl);
skb_queue_head_init_class(&tbl->proxy_queue,
&neigh_table_proxy_queue_class);