redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

cpuidle: Remove time measurement in poll state

Browse source 
The time measurement is already done in the cpuidle framework in the
'cpuidle_enter_state' function.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Daniel Lezcano 2014-07-23 19:02:48 +02:00 committed by Rafael J. Wysocki
parent 3a4a267ee3
commit dd38c9d35b
1 changed files with 0 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
drivers/cpuidle/driver.c
View file

@ -182,10 +182,6 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv)
static int poll_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
ktime_t t1, t2;
s64 diff;
t1 = ktime_get();
local_irq_enable();
if (!current_set_polling_and_test()) {
while (!need_resched())
@ -193,13 +189,6 @@ static int poll_idle(struct cpuidle_device *dev,
}
current_clr_polling();
t2 = ktime_get();
diff = ktime_to_us(ktime_sub(t2, t1));
if (diff > INT_MAX)
diff = INT_MAX;
dev->last_residency = (int) diff;
return index;
}