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authorDaniel Lezcano <daniel.lezcano@linaro.org>2014-07-23 21:02:48 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-07-29 03:37:57 +0400
commitdd38c9d35ba8e40011b36659cae2719aefd11904 (patch)
tree0ff503933e0a8b71dd850e19b30d6395e23abeb8 /drivers/cpuidle/driver.c
parent3a4a267ee3d8f3f26ca76982a1e37fd8d783c1cd (diff)
downloadlinux-dd38c9d35ba8e40011b36659cae2719aefd11904.tar.xz
cpuidle: Remove time measurement in poll state
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>
Diffstat (limited to 'drivers/cpuidle/driver.c')
-rw-r--r--drivers/cpuidle/driver.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 9634f20e3926..e431d11abf8d 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -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;
}