sched: RT-balance on new task

[linux-2.6-omap-h63xx.git] / kernel / hrtimer.c

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index b2b2c2b0a49bc845f0ba277f96b8db2d1d2f6803..f994bb8065e6bc6b5ea48f437bae62c97af1db20 100644 (file)
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -412,7 +412,7 @@ static int hrtimer_reprogram(struct hrtimer *timer,
        /*
         * When the callback is running, we do not reprogram the clock event
         * device. The timer callback is either running on a different CPU or
-        * the callback is executed in the hrtimer_interupt context. The
+        * the callback is executed in the hrtimer_interrupt context. The
         * reprogramming is handled either by the softirq, which called the
         * callback or at the end of the hrtimer_interrupt.
         */
@@ -602,7 +602,7 @@ static int hrtimer_switch_to_hres(void)
        /* "Retrigger" the interrupt to get things going */
        retrigger_next_event(NULL);
        local_irq_restore(flags);
-       printk(KERN_INFO "Switched to high resolution mode on CPU %d\n",
+       printk(KERN_DEBUG "Switched to high resolution mode on CPU %d\n",
               smp_processor_id());
        return 1;
 }
@@ -638,7 +638,7 @@ void __timer_stats_hrtimer_set_start_info(struct hrtimer *timer, void *addr)
 #endif
 
 /*
- * Counterpart to lock_timer_base above:
+ * Counterpart to lock_hrtimer_base above:
  */
 static inline
 void unlock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
@@ -850,6 +850,14 @@ hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)
 #ifdef CONFIG_TIME_LOW_RES
                tim = ktime_add(tim, base->resolution);
 #endif
+               /*
+                * Careful here: User space might have asked for a
+                * very long sleep, so the add above might result in a
+                * negative number, which enqueues the timer in front
+                * of the queue.
+                */
+               if (tim.tv64 < 0)
+                       tim.tv64 = KTIME_MAX;
        }
        timer->expires = tim;
 
@@ -1370,7 +1378,7 @@ sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp)
 /*
  * Functions related to boot-time initialization:
  */
-static void __devinit init_hrtimers_cpu(int cpu)
+static void __cpuinit init_hrtimers_cpu(int cpu)
 {
        struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
        int i;