From: Shaibal Dutta <shaibal.du...@broadcom.com>
Garbage collector work does not have to be bound to the CPU that scheduled
it. By moving work to the power-efficient workqueue, the selection of
CPU executing the work is left to the scheduler. This extends idle
residency times and conserves power.
This functionality is enabled when CONFIG_WQ_POWER_EFFICIENT is selected.
Cc: "David S. Miller" <da...@davemloft.net>
Cc: Alexey Kuznetsov <kuz...@ms2.inr.ac.ru>
Cc: James Morris <jmor...@namei.org>
Cc: Hideaki YOSHIFUJI <yoshf...@linux-ipv6.org>
Cc: Patrick McHardy <ka...@trash.net>
Signed-off-by: Shaibal Dutta <shaibal.du...@broadcom.com>
[zoran.marko...@linaro.org: Rebased to latest kernel version. Added
commit message. Fixed code alignment.]
Signed-off-by: Zoran Markovic <zoran.marko...@linaro.org>
---
net/ipv4/inetpeer.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 48f4244..7e3da6c6 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -161,7 +161,8 @@ static void inetpeer_gc_worker(struct work_struct *work)
list_splice(&list, &gc_list);
spin_unlock_bh(&gc_lock);
- schedule_delayed_work(&gc_work, gc_delay);
+ queue_delayed_work(system_power_efficient_wq,
+ &gc_work, gc_delay);
}
/* Called from ip_output.c:ip_init */
@@ -576,7 +577,8 @@ static void inetpeer_inval_rcu(struct rcu_head *head)
list_add_tail(&p->gc_list, &gc_list);
spin_unlock_bh(&gc_lock);
- schedule_delayed_work(&gc_work, gc_delay);
+ queue_delayed_work(system_power_efficient_wq,
+ &gc_work, gc_delay);
}
void inetpeer_invalidate_tree(struct inet_peer_base *base)
--
1.7.9.5
--
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