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PHYLIB: queue work on system_power_efficient_wq 

Phylib uses workqueues for multiple purposes. There is no real dependency of
scheduling these on the cpu which scheduled them.

On a idle system, it is observed that and 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 system_wq with system_power_efficient_wq for PHYLIB.

Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Viresh Kumar 2013-04-24 17:12:55 +05:30 committed by syphyr
parent 407b158b99
commit fd6e9ff26f
1 changed files with 5 additions and 4 deletions
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9
drivers/net/phy/phy.c
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@ -458,7 +458,7 @@ void phy_start_machine(struct phy_device *phydev,
{
phydev->adjust_state = handler;
schedule_delayed_work(&phydev->state_queue, HZ);
queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ);
}
/**
@ -519,7 +519,7 @@ static irqreturn_t phy_interrupt(int irq, void *phy_dat)
disable_irq_nosync(irq);
atomic_inc(&phydev->irq_disable);
schedule_work(&phydev->phy_queue);
queue_work(system_power_efficient_wq, &phydev->phy_queue);
return IRQ_HANDLED;
}
@ -674,7 +674,7 @@ static void phy_change(struct work_struct *work)
/* reschedule state queue work to run as soon as possible */
cancel_delayed_work_sync(&phydev->state_queue);
schedule_delayed_work(&phydev->state_queue, 0);
queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0);
return;
@ -937,7 +937,8 @@ void phy_state_machine(struct work_struct *work)
if (err < 0)
phy_error(phydev);
schedule_delayed_work(&phydev->state_queue, PHY_STATE_TIME * HZ);
queue_delayed_work(system_power_efficient_wq, &phydev->state_queue,
PHY_STATE_TIME * HZ);
}
static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad,