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-rw-r--r--kernel/irq/handle.c69
1 files changed, 36 insertions, 33 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 5dd2572993cf..065205bdd920 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -11,6 +11,7 @@
*/
#include <linux/irq.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/random.h>
#include <linux/interrupt.h>
@@ -44,7 +45,7 @@ void handle_bad_irq(unsigned int irq, struct irq_desc *desc)
#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS)
static void __init init_irq_default_affinity(void)
{
- alloc_bootmem_cpumask_var(&irq_default_affinity);
+ alloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT);
cpumask_setall(irq_default_affinity);
}
#else
@@ -81,45 +82,48 @@ static struct irq_desc irq_desc_init = {
.lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
};
-void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr)
+void __ref init_kstat_irqs(struct irq_desc *desc, int node, int nr)
{
- int node;
void *ptr;
- node = cpu_to_node(cpu);
- ptr = kzalloc_node(nr * sizeof(*desc->kstat_irqs), GFP_ATOMIC, node);
+ if (slab_is_available())
+ ptr = kzalloc_node(nr * sizeof(*desc->kstat_irqs),
+ GFP_ATOMIC, node);
+ else
+ ptr = alloc_bootmem_node(NODE_DATA(node),
+ nr * sizeof(*desc->kstat_irqs));
/*
* don't overwite if can not get new one
* init_copy_kstat_irqs() could still use old one
*/
if (ptr) {
- printk(KERN_DEBUG " alloc kstat_irqs on cpu %d node %d\n",
- cpu, node);
+ printk(KERN_DEBUG " alloc kstat_irqs on node %d\n", node);
desc->kstat_irqs = ptr;
}
}
-static void init_one_irq_desc(int irq, struct irq_desc *desc, int cpu)
+static void init_one_irq_desc(int irq, struct irq_desc *desc, int node)
{
memcpy(desc, &irq_desc_init, sizeof(struct irq_desc));
spin_lock_init(&desc->lock);
desc->irq = irq;
#ifdef CONFIG_SMP
- desc->cpu = cpu;
+ desc->node = node;
#endif
lockdep_set_class(&desc->lock, &irq_desc_lock_class);
- init_kstat_irqs(desc, cpu, nr_cpu_ids);
+ init_kstat_irqs(desc, node, nr_cpu_ids);
if (!desc->kstat_irqs) {
printk(KERN_ERR "can not alloc kstat_irqs\n");
BUG_ON(1);
}
- if (!init_alloc_desc_masks(desc, cpu, false)) {
+ if (!alloc_desc_masks(desc, node, false)) {
printk(KERN_ERR "can not alloc irq_desc cpumasks\n");
BUG_ON(1);
}
- arch_init_chip_data(desc, cpu);
+ init_desc_masks(desc);
+ arch_init_chip_data(desc, node);
}
/*
@@ -146,6 +150,7 @@ int __init early_irq_init(void)
{
struct irq_desc *desc;
int legacy_count;
+ int node;
int i;
init_irq_default_affinity();
@@ -156,20 +161,21 @@ int __init early_irq_init(void)
desc = irq_desc_legacy;
legacy_count = ARRAY_SIZE(irq_desc_legacy);
+ node = first_online_node;
/* allocate irq_desc_ptrs array based on nr_irqs */
- irq_desc_ptrs = alloc_bootmem(nr_irqs * sizeof(void *));
+ irq_desc_ptrs = kcalloc(nr_irqs, sizeof(void *), GFP_NOWAIT);
/* allocate based on nr_cpu_ids */
- /* FIXME: invert kstat_irgs, and it'd be a per_cpu_alloc'd thing */
- kstat_irqs_legacy = alloc_bootmem(NR_IRQS_LEGACY * nr_cpu_ids *
- sizeof(int));
+ kstat_irqs_legacy = kzalloc_node(NR_IRQS_LEGACY * nr_cpu_ids *
+ sizeof(int), GFP_NOWAIT, node);
for (i = 0; i < legacy_count; i++) {
desc[i].irq = i;
desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids;
lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
- init_alloc_desc_masks(&desc[i], 0, true);
+ alloc_desc_masks(&desc[i], node, true);
+ init_desc_masks(&desc[i]);
irq_desc_ptrs[i] = desc + i;
}
@@ -187,11 +193,10 @@ struct irq_desc *irq_to_desc(unsigned int irq)
return NULL;
}
-struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
+struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node)
{
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",
@@ -210,15 +215,17 @@ struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
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 (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, cpu);
+ init_one_irq_desc(irq, desc, node);
irq_desc_ptrs[irq] = desc;
@@ -256,7 +263,8 @@ int __init early_irq_init(void)
for (i = 0; i < count; i++) {
desc[i].irq = i;
- init_alloc_desc_masks(&desc[i], 0, true);
+ alloc_desc_masks(&desc[i], 0, true);
+ init_desc_masks(&desc[i]);
desc[i].kstat_irqs = kstat_irqs_all[i];
}
return arch_early_irq_init();
@@ -267,7 +275,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
return (irq < NR_IRQS) ? irq_desc + irq : NULL;
}
-struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
+struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node)
{
return irq_to_desc(irq);
}
@@ -450,11 +458,8 @@ unsigned int __do_IRQ(unsigned int irq)
/*
* No locking required for CPU-local interrupts:
*/
- if (desc->chip->ack) {
+ if (desc->chip->ack)
desc->chip->ack(irq);
- /* get new one */
- desc = irq_remap_to_desc(irq, desc);
- }
if (likely(!(desc->status & IRQ_DISABLED))) {
action_ret = handle_IRQ_event(irq, desc->action);
if (!noirqdebug)
@@ -465,10 +470,8 @@ unsigned int __do_IRQ(unsigned int irq)
}
spin_lock(&desc->lock);
- if (desc->chip->ack) {
+ if (desc->chip->ack)
desc->chip->ack(irq);
- desc = irq_remap_to_desc(irq, desc);
- }
/*
* REPLAY is when Linux resends an IRQ that was dropped earlier
* WAITING is used by probe to mark irqs that are being tested
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-25 20:06:10 +0000