[hrtimer] Change resolution storage to ktime_t format

Change the storage format of the per base resolution to ktime_t to
make it easier accessible in the hrtimers code.

Change the resolution from (NSEC_PER_SEC/HZ) to TICK_NSEC as Roman
pointed out. TICK_NSEC is closer to the real resolution.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index abb674c9b764..98c5c1537b5d 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -85,7 +85,7 @@ struct hrtimer_base {
         spinlock_t              lock;
         struct rb_root          active;
         struct rb_node          *first;
-        unsigned long           resolution;
+        ktime_t                 resolution;
         ktime_t                 (*get_time)(void);
         struct hrtimer          *curr_timer;
 };
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 222a047cc145..1bd6552cc341 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -272,8 +272,8 @@ static inline u64 ktime_to_ns(const ktime_t kt)
  * idea of the (in)accuracy of timers. Timer values are rounded up to
  * this resolution values.
  */
-#define KTIME_REALTIME_RES      (NSEC_PER_SEC/HZ)
-#define KTIME_MONOTONIC_RES     (NSEC_PER_SEC/HZ)
+#define KTIME_REALTIME_RES      (ktime_t){ .tv64 = TICK_NSEC }
+#define KTIME_MONOTONIC_RES     (ktime_t){ .tv64 = TICK_NSEC }
 
 /* Get the monotonic time in timespec format: */
 extern void ktime_get_ts(struct timespec *ts);