cpuidle: fix cpuidle time and usage overflow

cpuidle C-state sysfs node time and usage are very easy to overflow because
they are all of unsigned int type, time will overflow within about two hours,
usage will take longer time to overflow, but they are increasing for ever.

This patch will convert them to unsigned long long.

Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 6b72a4584086..51e6b1e520e6 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -38,8 +38,8 @@ struct cpuidle_state {
         unsigned int    power_usage; /* in mW */
         unsigned int    target_residency; /* in US */
 
-        unsigned int    usage;
-        unsigned int    time; /* in US */
+        unsigned long long      usage;
+        unsigned long long      time; /* in US */
 
         int (*enter)    (struct cpuidle_device *dev,
                          struct cpuidle_state *state);