[Bluetooth] Make use of MODULE_FIRMWARE

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

diff --git a/kernel/sched.c b/kernel/sched.c
index 3df33da..0dc7572 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -56,6 +56,16 @@
 
 #include <asm/unistd.h>
 
+/*
+ * Scheduler clock - returns current time in nanosec units.
+ * This is default implementation.
+ * Architectures and sub-architectures can override this.
+ */
+unsigned long long __attribute__((weak)) sched_clock(void)
+{
+       return (unsigned long long)jiffies * (1000000000 / HZ);
+}
+
 /*
  * Convert user-nice values [ -20 ... 0 ... 19 ]
  * to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ],
@@ -1843,6 +1853,13 @@ context_switch(struct rq *rq, struct task_struct *prev,
        struct mm_struct *mm = next->mm;
        struct mm_struct *oldmm = prev->active_mm;
 
+       /*
+        * For paravirt, this is coupled with an exit in switch_to to
+        * combine the page table reload and the switch backend into
+        * one hypercall.
+        */
+       arch_enter_lazy_cpu_mode();
+
        if (!mm) {
                next->active_mm = oldmm;
                atomic_inc(&oldmm->mm_count);
@@ -2887,14 +2904,16 @@ static void active_load_balance(struct rq *busiest_rq, int busiest_cpu)
 static void update_load(struct rq *this_rq)
 {
        unsigned long this_load;
-       int i, scale;
+       unsigned int i, scale;
 
        this_load = this_rq->raw_weighted_load;
 
        /* Update our load: */
-       for (i = 0, scale = 1; i < 3; i++, scale <<= 1) {
+       for (i = 0, scale = 1; i < 3; i++, scale += scale) {
                unsigned long old_load, new_load;
 
+               /* scale is effectively 1 << i now, and >> i divides by scale */
+
                old_load = this_rq->cpu_load[i];
                new_load = this_load;
                /*
@@ -2904,7 +2923,7 @@ static void update_load(struct rq *this_rq)
                 */
                if (new_load > old_load)
                        new_load += scale-1;
-               this_rq->cpu_load[i] = (old_load*(scale-1) + new_load) / scale;
+               this_rq->cpu_load[i] = (old_load*(scale-1) + new_load) >> i;
        }
 }
 
@@ -4193,13 +4212,12 @@ static void __setscheduler(struct task_struct *p, int policy, int prio)
 }
 
 /**
- * sched_setscheduler - change the scheduling policy and/or RT priority of
- * a thread.
+ * sched_setscheduler - change the scheduling policy and/or RT priority of a thread.
  * @p: the task in question.
  * @policy: new policy.
  * @param: structure containing the new RT priority.
  *
- * NOTE: the task may be already dead
+ * NOTE that the task may be already dead.
  */
 int sched_setscheduler(struct task_struct *p, int policy,
                       struct sched_param *param)
@@ -4567,7 +4585,7 @@ asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
 /**
  * sys_sched_yield - yield the current processor to other threads.
  *
- * this function yields the current CPU by moving the calling thread
+ * This function yields the current CPU by moving the calling thread
  * to the expired array. If there are no other threads running on this
  * CPU then this function will return.
  */
@@ -4694,7 +4712,7 @@ EXPORT_SYMBOL(cond_resched_softirq);
 /**
  * yield - yield the current processor to other threads.
  *
- * this is a shortcut for kernel-space yielding - it marks the
+ * This is a shortcut for kernel-space yielding - it marks the
  * thread runnable and calls sys_sched_yield().
  */
 void __sched yield(void)
@@ -6865,7 +6883,7 @@ void __init sched_init_smp(void)
 
        lock_cpu_hotplug();
        arch_init_sched_domains(&cpu_online_map);
-       cpus_andnot(non_isolated_cpus, cpu_online_map, cpu_isolated_map);
+       cpus_andnot(non_isolated_cpus, cpu_possible_map, cpu_isolated_map);
        if (cpus_empty(non_isolated_cpus))
                cpu_set(smp_processor_id(), non_isolated_cpus);
        unlock_cpu_hotplug();