[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>
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index abb674c..98c5c15 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -85,7 +85,7 @@
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 222a047..1bd6552 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -272,8 +272,8 @@
* 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);
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index e6e8278..76d759c 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -518,9 +518,8 @@
{
struct hrtimer_base *bases;
- tp->tv_sec = 0;
bases = per_cpu(hrtimer_bases, raw_smp_processor_id());
- tp->tv_nsec = bases[which_clock].resolution;
+ *tp = ktime_to_timespec(bases[which_clock].resolution);
return 0;
}