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>
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@ -835,7 +835,7 @@ out:
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* ARP entry timeouts range from 1/2 base_reachable_time to 3/2
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* base_reachable_time.
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*/
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schedule_delayed_work(&tbl->gc_work,
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queue_delayed_work(system_power_efficient_wq, &tbl->gc_work,
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tbl->parms.base_reachable_time >> 1);
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write_unlock_bh(&tbl->lock);
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}
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@ -1588,7 +1588,8 @@ static void neigh_table_init_no_netlink(struct neigh_table *tbl)
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rwlock_init(&tbl->lock);
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INIT_DEFERRABLE_WORK(&tbl->gc_work, neigh_periodic_work);
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schedule_delayed_work(&tbl->gc_work, tbl->parms.reachable_time);
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queue_delayed_work(system_power_efficient_wq, &tbl->gc_work,
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tbl->parms.reachable_time);
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setup_timer(&tbl->proxy_timer, neigh_proxy_process, (unsigned long)tbl);
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skb_queue_head_init_class(&tbl->proxy_queue,
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&neigh_table_proxy_queue_class);
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