static int init_local_irq_data(void)
{
int irq;
spin_lock(&local_irqs_type_lock);
for (irq = 0; irq < NR_LOCAL_IRQS; irq++) {
struct irq_desc *desc = irq_to_desc(irq);
init_one_irq_desc(desc);
desc->irq = irq;
desc->action = NULL;
/* PPIs are included in local_irqs, we copy the IRQ type from
* local_irqs_type when bringing up local IRQ for this CPU in
* order to pick up any configuration done before this CPU came
* up. For interrupts configured after this point this is done in
* irq_set_type.
*/
desc->arch.type = local_irqs_type[irq];
}
spin_unlock(&local_irqs_type_lock);
return 0;
}
static int __init init_irq_data(void)
{
int irq;
for (irq = NR_LOCAL_IRQS; irq < NR_IRQS; irq++) {
struct irq_desc *desc = irq_to_desc(irq);
init_one_irq_desc(desc);
desc->irq = irq;
desc->action = NULL;
}
return 0;
}
struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node)
{
struct irq_desc *desc;
unsigned long flags;
if (irq >= nr_irqs) {
WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n",
irq, nr_irqs);
return NULL;
}
desc = irq_desc_ptrs[irq];
if (desc)
return desc;
spin_lock_irqsave(&sparse_irq_lock, flags);
/* We have to check it to avoid races with another CPU */
desc = irq_desc_ptrs[irq];
if (desc)
goto out_unlock;
if (slab_is_available())
desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
else
desc = alloc_bootmem_node(NODE_DATA(node), sizeof(*desc));
printk(KERN_DEBUG " alloc irq_desc for %d on node %d\n", irq, node);
if (!desc) {
printk(KERN_ERR "can not alloc irq_desc\n");
BUG_ON(1);
}
init_one_irq_desc(irq, desc, node);
irq_desc_ptrs[irq] = desc;
out_unlock:
spin_unlock_irqrestore(&sparse_irq_lock, flags);
return desc;
}
struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
{
struct irq_desc *desc;
unsigned long flags;
int node;
if (irq >= nr_irqs) {
WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n",
irq, nr_irqs);
return NULL;
}
desc = irq_desc_ptrs[irq];
if (desc)
return desc;
spin_lock_irqsave(&sparse_irq_lock, flags);
/* We have to check it to avoid races with another CPU */
desc = irq_desc_ptrs[irq];
if (desc)
goto out_unlock;
node = cpu_to_node(cpu);
desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
printk(KERN_DEBUG " alloc irq_desc for %d on cpu %d node %d\n",
irq, cpu, node);
if (!desc) {
printk(KERN_ERR "can not alloc irq_desc\n");
BUG_ON(1);
}
init_one_irq_desc(irq, desc, cpu);
irq_desc_ptrs[irq] = desc;
out_unlock:
spin_unlock_irqrestore(&sparse_irq_lock, flags);
return desc;
}
struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node)
{
struct irq_desc *desc;
unsigned long flags;
if (irq >= nr_irqs) {
WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n",
irq, nr_irqs);
return NULL;
}
desc = irq_to_desc(irq);
if (desc)
return desc;
raw_spin_lock_irqsave(&sparse_irq_lock, flags);
/* We have to check it to avoid races with another CPU */
desc = irq_to_desc(irq);
if (desc)
goto out_unlock;
desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
printk(KERN_DEBUG " alloc irq_desc for %d on node %d\n", irq, node);
if (!desc) {
printk(KERN_ERR "can not alloc irq_desc\n");
BUG_ON(1);
}
init_one_irq_desc(irq, desc, node);
set_irq_desc(irq, desc);
out_unlock:
raw_spin_unlock_irqrestore(&sparse_irq_lock, flags);
return desc;
}