hrtimer: Factor out __hrtimer_next_event_base()

Preparatory patch for softirq based hrtimers to avoid code duplication.

No functional change.

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: keescook@chromium.org
Link: http://lkml.kernel.org/r/20171221104205.7269-25-anna-maria@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 16 insertions, 4 deletions

diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 4142e6f536b4..5d9b81d224b3 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -458,13 +458,13 @@ __next_base(struct hrtimer_cpu_base *cpu_base, unsigned int *active)
 #define for_each_active_base(base, cpu_base, active)    \
         while ((base = __next_base((cpu_base), &(active))))
 
-static ktime_t __hrtimer_get_next_event(struct hrtimer_cpu_base *cpu_base)
+static ktime_t __hrtimer_next_event_base(struct hrtimer_cpu_base *cpu_base,
+                                         unsigned int active,
+                                         ktime_t expires_next)
 {
         struct hrtimer_clock_base *base;
-        unsigned int active = cpu_base->active_bases;
-        ktime_t expires, expires_next = KTIME_MAX;
+        ktime_t expires;
 
-        cpu_base->next_timer = NULL;
         for_each_active_base(base, cpu_base, active) {
                 struct timerqueue_node *next;
                 struct hrtimer *timer;
@@ -487,6 +487,18 @@ static ktime_t __hrtimer_get_next_event(struct hrtimer_cpu_base *cpu_base)
         return expires_next;
 }
 
+static ktime_t __hrtimer_get_next_event(struct hrtimer_cpu_base *cpu_base)
+{
+        unsigned int active = cpu_base->active_bases;
+        ktime_t expires_next = KTIME_MAX;
+
+        cpu_base->next_timer = NULL;
+
+        expires_next = __hrtimer_next_event_base(cpu_base, active, expires_next);
+
+        return expires_next;
+}
+
 static inline ktime_t hrtimer_update_base(struct hrtimer_cpu_base *base)
 {
         ktime_t *offs_real = &base->clock_base[HRTIMER_BASE_REALTIME].offset;