Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

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

diff --git a/kernel/timer.c b/kernel/timer.c
index ba41af2..b7792fb 100644 (file)
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -305,6 +305,20 @@ void __timer_stats_timer_set_start_info(struct timer_list *timer, void *addr)
        memcpy(timer->start_comm, current->comm, TASK_COMM_LEN);
        timer->start_pid = current->pid;
 }
+
+static void timer_stats_account_timer(struct timer_list *timer)
+{
+       unsigned int flag = 0;
+
+       if (unlikely(tbase_get_deferrable(timer->base)))
+               flag |= TIMER_STATS_FLAG_DEFERRABLE;
+
+       timer_stats_update_stats(timer, timer->start_pid, timer->start_site,
+                                timer->function, timer->start_comm, flag);
+}
+
+#else
+static void timer_stats_account_timer(struct timer_list *timer) {}
 #endif
 
 /**
@@ -629,7 +643,7 @@ static inline void __run_timers(tvec_base_t *base)
                        void (*fn)(unsigned long);
                        unsigned long data;
 
-                       timer = list_entry(head->next,struct timer_list,entry);
+                       timer = list_first_entry(head, struct timer_list,entry);
                        fn = timer->function;
                        data = timer->data;
 
@@ -666,7 +680,7 @@ static inline void __run_timers(tvec_base_t *base)
 static unsigned long __next_timer_interrupt(tvec_base_t *base)
 {
        unsigned long timer_jiffies = base->timer_jiffies;
-       unsigned long expires = timer_jiffies + (LONG_MAX >> 1);
+       unsigned long expires = timer_jiffies + NEXT_TIMER_MAX_DELTA;
        int index, slot, array, found = 0;
        struct timer_list *nte;
        tvec_t *varray[4];
@@ -752,6 +766,14 @@ static unsigned long cmp_next_hrtimer_event(unsigned long now,
 
        tsdelta = ktime_to_timespec(hr_delta);
        delta = timespec_to_jiffies(&tsdelta);
+
+       /*
+        * Limit the delta to the max value, which is checked in
+        * tick_nohz_stop_sched_tick():
+        */
+       if (delta > NEXT_TIMER_MAX_DELTA)
+               delta = NEXT_TIMER_MAX_DELTA;
+
        /*
         * Take rounding errors in to account and make sure, that it
         * expires in the next tick. Otherwise we go into an endless
@@ -1106,6 +1128,7 @@ int do_sysinfo(struct sysinfo *info)
                getnstimeofday(&tp);
                tp.tv_sec += wall_to_monotonic.tv_sec;
                tp.tv_nsec += wall_to_monotonic.tv_nsec;
+               monotonic_to_bootbased(&tp);
                if (tp.tv_nsec - NSEC_PER_SEC >= 0) {
                        tp.tv_nsec = tp.tv_nsec - NSEC_PER_SEC;
                        tp.tv_sec++;
@@ -1198,7 +1221,8 @@ static int __devinit init_timers_cpu(int cpu)
                        /*
                         * The APs use this path later in boot
                         */
-                       base = kmalloc_node(sizeof(*base), GFP_KERNEL,
+                       base = kmalloc_node(sizeof(*base),
+                                               GFP_KERNEL | __GFP_ZERO,
                                                cpu_to_node(cpu));
                        if (!base)
                                return -ENOMEM;
@@ -1209,7 +1233,6 @@ static int __devinit init_timers_cpu(int cpu)
                                kfree(base);
                                return -ENOMEM;
                        }
-                       memset(base, 0, sizeof(*base));
                        per_cpu(tvec_bases, cpu) = base;
                } else {
                        /*
@@ -1248,7 +1271,7 @@ static void migrate_timer_list(tvec_base_t *new_base, struct list_head *head)
        struct timer_list *timer;
 
        while (!list_empty(head)) {
-               timer = list_entry(head->next, struct timer_list, entry);
+               timer = list_first_entry(head, struct timer_list, entry);
                detach_timer(timer, 0);
                timer_set_base(timer, new_base);
                internal_add_timer(new_base, timer);
@@ -1293,11 +1316,13 @@ static int __cpuinit timer_cpu_notify(struct notifier_block *self,
        long cpu = (long)hcpu;
        switch(action) {
        case CPU_UP_PREPARE:
+       case CPU_UP_PREPARE_FROZEN:
                if (init_timers_cpu(cpu) < 0)
                        return NOTIFY_BAD;
                break;
 #ifdef CONFIG_HOTPLUG_CPU
        case CPU_DEAD:
+       case CPU_DEAD_FROZEN:
                migrate_timers(cpu);
                break;
 #endif