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-rw-r--r--kernel/hrtimer.c47
1 files changed, 20 insertions, 27 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 18324305724..d0ba190dfeb 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
@@ -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)
@@ -460,14 +456,13 @@ 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)
{
@@ -489,7 +484,6 @@ 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:
@@ -510,7 +504,6 @@ 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)
@@ -564,7 +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
@@ -576,7 +568,7 @@ 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;
@@ -588,7 +580,6 @@ 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
*
@@ -599,7 +590,7 @@ 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;
@@ -678,7 +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;
@@ -702,7 +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;
@@ -711,13 +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)
@@ -727,7 +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;
@@ -760,11 +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;
}
@@ -791,8 +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
@@ -842,7 +835,7 @@ static void migrate_hrtimers(int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
-static int 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;
@@ -866,7 +859,7 @@ static int hrtimer_cpu_notify(struct notifier_block *self,
return NOTIFY_OK;
}
-static struct notifier_block hrtimers_nb = {
+static struct notifier_block __cpuinitdata hrtimers_nb = {
.notifier_call = hrtimer_cpu_notify,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-27 21:31:10 +0000