X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=kernel%2Fhrtimer.c;h=d0ba190dfeb6b9ae81c98f135515b19a145f8206;hb=d907dd2efd69195f4a5fc584a0eaecc599ca4c2c;hp=49cbf7cffebd1e75c8142b180c472f7f1f0a786c;hpb=669d7868ae414cdb7b7e5df375dc8e4b47f26f6d;p=safe%2Fjmp%2Flinux-2.6

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 49cbf7c..d0ba190 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -98,7 +98,6 @@ static DEFINE_PER_CPU(struct hrtimer_base, hrtimer_bases[MAX_HRTIMER_BASES]) =
 
 /**
  * ktime_get_ts - get the monotonic clock in timespec format
- *
  * @ts:		pointer to timespec variable
  *
  * The function calculates the monotonic clock from the realtime
@@ -188,7 +187,7 @@ switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_base *base)
 {
 	struct hrtimer_base *new_base;
 
-	new_base = &__get_cpu_var(hrtimer_bases[base->index]);
+	new_base = &__get_cpu_var(hrtimer_bases)[base->index];
 
 	if (base != new_base) {
 		/*
@@ -238,7 +237,6 @@ lock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
 # ifndef CONFIG_KTIME_SCALAR
 /**
  * ktime_add_ns - Add a scalar nanoseconds value to a ktime_t variable
- *
  * @kt:		addend
  * @nsec:	the scalar nsec value to add
  *
@@ -299,7 +297,6 @@ void unlock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
 
 /**
  * hrtimer_forward - forward the timer expiry
- *
  * @timer:	hrtimer to forward
  * @now:	forward past this time
  * @interval:	the interval to forward
@@ -393,7 +390,7 @@ static void __remove_hrtimer(struct hrtimer *timer, struct hrtimer_base *base)
 	if (base->first == &timer->node)
 		base->first = rb_next(&timer->node);
 	rb_erase(&timer->node, &base->active);
-	timer->node.rb_parent = HRTIMER_INACTIVE;
+	rb_set_parent(&timer->node, &timer->node);
 }
 
 /*
@@ -411,7 +408,6 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_base *base)
 
 /**
  * hrtimer_start - (re)start an relative timer on the current CPU
- *
  * @timer:	the timer to be added
  * @tim:	expiry time
  * @mode:	expiry mode: absolute (HRTIMER_ABS) or relative (HRTIMER_REL)
@@ -456,17 +452,17 @@ hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(hrtimer_start);
 
 /**
  * hrtimer_try_to_cancel - try to deactivate a timer
- *
  * @timer:	hrtimer to stop
  *
  * Returns:
  *  0 when the timer was not active
  *  1 when the timer was active
  * -1 when the timer is currently excuting the callback function and
- *    can not be stopped
+ *    cannot be stopped
  */
 int hrtimer_try_to_cancel(struct hrtimer *timer)
 {
@@ -484,10 +480,10 @@ int hrtimer_try_to_cancel(struct hrtimer *timer)
 	return ret;
 
 }
+EXPORT_SYMBOL_GPL(hrtimer_try_to_cancel);
 
 /**
  * hrtimer_cancel - cancel a timer and wait for the handler to finish.
- *
  * @timer:	the timer to be cancelled
  *
  * Returns:
@@ -501,12 +497,13 @@ int hrtimer_cancel(struct hrtimer *timer)
 
 		if (ret >= 0)
 			return ret;
+		cpu_relax();
 	}
 }
+EXPORT_SYMBOL_GPL(hrtimer_cancel);
 
 /**
  * hrtimer_get_remaining - get remaining time for the timer
- *
  * @timer:	the timer to read
  */
 ktime_t hrtimer_get_remaining(const struct hrtimer *timer)
@@ -521,6 +518,7 @@ ktime_t hrtimer_get_remaining(const struct hrtimer *timer)
 
 	return rem;
 }
+EXPORT_SYMBOL_GPL(hrtimer_get_remaining);
 
 #ifdef CONFIG_NO_IDLE_HZ
 /**
@@ -559,7 +557,6 @@ ktime_t hrtimer_get_next_event(void)
 
 /**
  * hrtimer_init - initialize a timer to the given clock
- *
  * @timer:	the timer to be initialized
  * @clock_id:	the clock to be used
  * @mode:	timer mode abs/rel
@@ -571,18 +568,18 @@ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id,
 
 	memset(timer, 0, sizeof(struct hrtimer));
 
-	bases = per_cpu(hrtimer_bases, raw_smp_processor_id());
+	bases = __raw_get_cpu_var(hrtimer_bases);
 
 	if (clock_id == CLOCK_REALTIME && mode != HRTIMER_ABS)
 		clock_id = CLOCK_MONOTONIC;
 
 	timer->base = &bases[clock_id];
-	timer->node.rb_parent = HRTIMER_INACTIVE;
+	rb_set_parent(&timer->node, &timer->node);
 }
+EXPORT_SYMBOL_GPL(hrtimer_init);
 
 /**
  * hrtimer_get_res - get the timer resolution for a clock
- *
  * @which_clock: which clock to query
  * @tp:		 pointer to timespec variable to store the resolution
  *
@@ -593,11 +590,12 @@ int hrtimer_get_res(const clockid_t which_clock, struct timespec *tp)
 {
 	struct hrtimer_base *bases;
 
-	bases = per_cpu(hrtimer_bases, raw_smp_processor_id());
+	bases = __raw_get_cpu_var(hrtimer_bases);
 	*tp = ktime_to_timespec(bases[which_clock].resolution);
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(hrtimer_get_res);
 
 /*
  * Expire the per base hrtimer-queue:
@@ -606,6 +604,9 @@ static inline void run_hrtimer_queue(struct hrtimer_base *base)
 {
 	struct rb_node *node;
 
+	if (!base->first)
+		return;
+
 	if (base->get_softirq_time)
 		base->softirq_time = base->get_softirq_time();
 
@@ -668,7 +669,7 @@ static int hrtimer_wakeup(struct hrtimer *timer)
 	return HRTIMER_NORESTART;
 }
 
-void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, task_t *task)
+void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *task)
 {
 	sl->timer.function = hrtimer_wakeup;
 	sl->task = task;
@@ -692,7 +693,7 @@ static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mod
 	return t->task == NULL;
 }
 
-static long __sched nanosleep_restart(struct restart_block *restart)
+long __sched hrtimer_nanosleep_restart(struct restart_block *restart)
 {
 	struct hrtimer_sleeper t;
 	struct timespec __user *rmtp;
@@ -701,13 +702,13 @@ static long __sched nanosleep_restart(struct restart_block *restart)
 
 	restart->fn = do_no_restart_syscall;
 
-	hrtimer_init(&t.timer, restart->arg3, HRTIMER_ABS);
-	t.timer.expires.tv64 = ((u64)restart->arg1 << 32) | (u64) restart->arg0;
+	hrtimer_init(&t.timer, restart->arg0, HRTIMER_ABS);
+	t.timer.expires.tv64 = ((u64)restart->arg3 << 32) | (u64) restart->arg2;
 
 	if (do_nanosleep(&t, HRTIMER_ABS))
 		return 0;
 
-	rmtp = (struct timespec __user *) restart->arg2;
+	rmtp = (struct timespec __user *) restart->arg1;
 	if (rmtp) {
 		time = ktime_sub(t.timer.expires, t.timer.base->get_time());
 		if (time.tv64 <= 0)
@@ -717,7 +718,7 @@ static long __sched nanosleep_restart(struct restart_block *restart)
 			return -EFAULT;
 	}
 
-	restart->fn = nanosleep_restart;
+	restart->fn = hrtimer_nanosleep_restart;
 
 	/* The other values in restart are already filled in */
 	return -ERESTART_RESTARTBLOCK;
@@ -750,11 +751,11 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp,
 	}
 
 	restart = &current_thread_info()->restart_block;
-	restart->fn = nanosleep_restart;
-	restart->arg0 = t.timer.expires.tv64 & 0xFFFFFFFF;
-	restart->arg1 = t.timer.expires.tv64 >> 32;
-	restart->arg2 = (unsigned long) rmtp;
-	restart->arg3 = (unsigned long) t.timer.base->index;
+	restart->fn = hrtimer_nanosleep_restart;
+	restart->arg0 = (unsigned long) t.timer.base->index;
+	restart->arg1 = (unsigned long) rmtp;
+	restart->arg2 = t.timer.expires.tv64 & 0xFFFFFFFF;
+	restart->arg3 = t.timer.expires.tv64 >> 32;
 
 	return -ERESTART_RESTARTBLOCK;
 }
@@ -781,8 +782,10 @@ static void __devinit init_hrtimers_cpu(int cpu)
 	struct hrtimer_base *base = per_cpu(hrtimer_bases, cpu);
 	int i;
 
-	for (i = 0; i < MAX_HRTIMER_BASES; i++, base++)
+	for (i = 0; i < MAX_HRTIMER_BASES; i++, base++) {
 		spin_lock_init(&base->lock);
+		lockdep_set_class(&base->lock, &base->lock_key);
+	}
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -832,7 +835,7 @@ static void migrate_hrtimers(int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int __devinit hrtimer_cpu_notify(struct notifier_block *self,
+static int __cpuinit hrtimer_cpu_notify(struct notifier_block *self,
 					unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
@@ -856,7 +859,7 @@ static int __devinit hrtimer_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __devinitdata hrtimers_nb = {
+static struct notifier_block __cpuinitdata hrtimers_nb = {
 	.notifier_call = hrtimer_cpu_notify,
 };