Clean up duplicate includes in fs/ecryptfs/

[pandora-kernel.git] / kernel / hrtimer.c

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 72d0342..dc8a445 100644 (file)
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -141,11 +141,7 @@ static void hrtimer_get_softirq_time(struct hrtimer_cpu_base *base)
 
        do {
                seq = read_seqbegin(&xtime_lock);
-#ifdef CONFIG_NO_HZ
-               getnstimeofday(&xts);
-#else
-               xts = xtime;
-#endif
+               xts = current_kernel_time();
                tom = wall_to_monotonic;
        } while (read_seqretry(&xtime_lock, seq));
 
@@ -281,6 +277,30 @@ ktime_t ktime_add_ns(const ktime_t kt, u64 nsec)
 }
 
 EXPORT_SYMBOL_GPL(ktime_add_ns);
+
+/**
+ * ktime_sub_ns - Subtract a scalar nanoseconds value from a ktime_t variable
+ * @kt:                minuend
+ * @nsec:      the scalar nsec value to subtract
+ *
+ * Returns the subtraction of @nsec from @kt in ktime_t format
+ */
+ktime_t ktime_sub_ns(const ktime_t kt, u64 nsec)
+{
+       ktime_t tmp;
+
+       if (likely(nsec < NSEC_PER_SEC)) {
+               tmp.tv64 = nsec;
+       } else {
+               unsigned long rem = do_div(nsec, NSEC_PER_SEC);
+
+               tmp = ktime_set((long)nsec, rem);
+       }
+
+       return ktime_sub(kt, tmp);
+}
+
+EXPORT_SYMBOL_GPL(ktime_sub_ns);
 # endif /* !CONFIG_KTIME_SCALAR */
 
 /*
@@ -558,7 +578,8 @@ static inline int hrtimer_enqueue_reprogram(struct hrtimer *timer,
  */
 static int hrtimer_switch_to_hres(void)
 {
-       struct hrtimer_cpu_base *base = &__get_cpu_var(hrtimer_bases);
+       int cpu = smp_processor_id();
+       struct hrtimer_cpu_base *base = &per_cpu(hrtimer_bases, cpu);
        unsigned long flags;
 
        if (base->hres_active)
@@ -568,6 +589,8 @@ static int hrtimer_switch_to_hres(void)
 
        if (tick_init_highres()) {
                local_irq_restore(flags);
+               printk(KERN_WARNING "Could not switch to high resolution "
+                                   "mode on CPU %d\n", cpu);
                return 0;
        }
        base->hres_active = 1;
@@ -683,6 +706,7 @@ static void enqueue_hrtimer(struct hrtimer *timer,
        struct rb_node **link = &base->active.rb_node;
        struct rb_node *parent = NULL;
        struct hrtimer *entry;
+       int leftmost = 1;
 
        /*
         * Find the right place in the rbtree:
@@ -694,18 +718,19 @@ static void enqueue_hrtimer(struct hrtimer *timer,
                 * We dont care about collisions. Nodes with
                 * the same expiry time stay together.
                 */
-               if (timer->expires.tv64 < entry->expires.tv64)
+               if (timer->expires.tv64 < entry->expires.tv64) {
                        link = &(*link)->rb_left;
-               else
+               } else {
                        link = &(*link)->rb_right;
+                       leftmost = 0;
+               }
        }
 
        /*
         * Insert the timer to the rbtree and check whether it
         * replaces the first pending timer
         */
-       if (!base->first || timer->expires.tv64 <
-           rb_entry(base->first, struct hrtimer, node)->expires.tv64) {
+       if (leftmost) {
                /*
                 * Reprogram the clock event device. When the timer is already
                 * expired hrtimer_enqueue_reprogram has either called the