Commit 67235cbc authored Jan 30, 2014 by Shaibal Dutta Committed by Johannes Berg Feb 04, 2014

net: rfkill: move poll work to power efficient workqueue



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>

parent 845f3351

net/rfkill/core.c

+6 −3

Original line number	Diff line number	Diff line
		@@ -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) {

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