diff options
Diffstat (limited to 'kernel/smp.c')
| -rw-r--r-- | kernel/smp.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index a8c76069cf5..de735a6637d 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -16,11 +16,11 @@ static DEFINE_PER_CPU(struct call_single_queue, call_single_queue); static struct { struct list_head queue; - spinlock_t lock; + raw_spinlock_t lock; } call_function __cacheline_aligned_in_smp = { .queue = LIST_HEAD_INIT(call_function.queue), - .lock = __SPIN_LOCK_UNLOCKED(call_function.lock), + .lock = __RAW_SPIN_LOCK_UNLOCKED(call_function.lock), }; enum { @@ -35,7 +35,7 @@ struct call_function_data { struct call_single_queue { struct list_head list; - spinlock_t lock; + raw_spinlock_t lock; }; static DEFINE_PER_CPU(struct call_function_data, cfd_data); @@ -80,7 +80,7 @@ static int __cpuinit init_call_single_data(void) for_each_possible_cpu(i) { struct call_single_queue *q = &per_cpu(call_single_queue, i); - spin_lock_init(&q->lock); + raw_spin_lock_init(&q->lock); INIT_LIST_HEAD(&q->list); } @@ -141,10 +141,10 @@ void generic_exec_single(int cpu, struct call_single_data *data, int wait) unsigned long flags; int ipi; - spin_lock_irqsave(&dst->lock, flags); + raw_spin_lock_irqsave(&dst->lock, flags); ipi = list_empty(&dst->list); list_add_tail(&data->list, &dst->list); - spin_unlock_irqrestore(&dst->lock, flags); + raw_spin_unlock_irqrestore(&dst->lock, flags); /* * The list addition should be visible before sending the IPI @@ -171,7 +171,7 @@ void generic_exec_single(int cpu, struct call_single_data *data, int wait) void generic_smp_call_function_interrupt(void) { struct call_function_data *data; - int cpu = get_cpu(); + int cpu = smp_processor_id(); /* * Shouldn't receive this interrupt on a cpu that is not yet online. @@ -201,9 +201,9 @@ void generic_smp_call_function_interrupt(void) refs = atomic_dec_return(&data->refs); WARN_ON(refs < 0); if (!refs) { - spin_lock(&call_function.lock); + raw_spin_lock(&call_function.lock); list_del_rcu(&data->csd.list); - spin_unlock(&call_function.lock); + raw_spin_unlock(&call_function.lock); } if (refs) @@ -212,7 +212,6 @@ void generic_smp_call_function_interrupt(void) csd_unlock(&data->csd); } - put_cpu(); } /* @@ -230,9 +229,9 @@ void generic_smp_call_function_single_interrupt(void) */ WARN_ON_ONCE(!cpu_online(smp_processor_id())); - spin_lock(&q->lock); + raw_spin_lock(&q->lock); list_replace_init(&q->list, &list); - spin_unlock(&q->lock); + raw_spin_unlock(&q->lock); while (!list_empty(&list)) { struct call_single_data *data; @@ -449,14 +448,14 @@ void smp_call_function_many(const struct cpumask *mask, cpumask_clear_cpu(this_cpu, data->cpumask); atomic_set(&data->refs, cpumask_weight(data->cpumask)); - spin_lock_irqsave(&call_function.lock, flags); + raw_spin_lock_irqsave(&call_function.lock, flags); /* * Place entry at the _HEAD_ of the list, so that any cpu still * observing the entry in generic_smp_call_function_interrupt() * will not miss any other list entries: */ list_add_rcu(&data->csd.list, &call_function.queue); - spin_unlock_irqrestore(&call_function.lock, flags); + raw_spin_unlock_irqrestore(&call_function.lock, flags); /* * Make the list addition visible before sending the ipi. @@ -501,20 +500,20 @@ EXPORT_SYMBOL(smp_call_function); void ipi_call_lock(void) { - spin_lock(&call_function.lock); + raw_spin_lock(&call_function.lock); } void ipi_call_unlock(void) { - spin_unlock(&call_function.lock); + raw_spin_unlock(&call_function.lock); } void ipi_call_lock_irq(void) { - spin_lock_irq(&call_function.lock); + raw_spin_lock_irq(&call_function.lock); } void ipi_call_unlock_irq(void) { - spin_unlock_irq(&call_function.lock); + raw_spin_unlock_irq(&call_function.lock); } |