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net: rfkill: move poll work to power efficient workqueue

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This patch moves the rfkill poll_work to the power efficient workqueue.
This work does not have to be bound to the CPU that scheduled it, hence
the selection of CPU that executes it would be left to the scheduler.
Net result is that CPU idle times would be extended, resulting in power
savings.

This behaviour is enabled when CONFIG_WQ_POWER_EFFICIENT is selected.

Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Shaibal Dutta <shaibal.dutta@broadcom.com>
[zoran.markovic@linaro.org: Rebased to latest kernel, added commit message.
Fixed workqueue selection after suspend/resume cycle.]
Signed-off-by: Zoran Markovic <zoran.markovic@linaro.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Shaibal Dutta 2014-01-30 14:43:34 -08:00 committed by Johannes Berg
parent 845f3351b1
commit 67235cbca4
1 changed files with 6 additions and 3 deletions
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9
net/rfkill/core.c
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@ -789,7 +789,8 @@ void rfkill_resume_polling(struct rfkill *rfkill)
if (!rfkill->ops->poll)
return;
schedule_work(&rfkill->poll_work.work);
queue_delayed_work(system_power_efficient_wq,
&rfkill->poll_work, 0);
}
EXPORT_SYMBOL(rfkill_resume_polling);
@ -894,7 +895,8 @@ static void rfkill_poll(struct work_struct *work)
*/
rfkill->ops->poll(rfkill, rfkill->data);
schedule_delayed_work(&rfkill->poll_work,
queue_delayed_work(system_power_efficient_wq,
&rfkill->poll_work,
round_jiffies_relative(POLL_INTERVAL));
}
@ -958,7 +960,8 @@ int __must_check rfkill_register(struct rfkill *rfkill)
INIT_WORK(&rfkill->sync_work, rfkill_sync_work);
if (rfkill->ops->poll)
schedule_delayed_work(&rfkill->poll_work,
queue_delayed_work(system_power_efficient_wq,
&rfkill->poll_work,
round_jiffies_relative(POLL_INTERVAL));
if (!rfkill->persistent || rfkill_epo_lock_active) {