aboutsummaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/Makefile2
-rw-r--r--kernel/irq/chip.c12
-rw-r--r--kernel/irq/handle.c58
-rw-r--r--kernel/irq/internals.h5
-rw-r--r--kernel/irq/manage.c17
-rw-r--r--kernel/irq/migration.c14
-rw-r--r--kernel/irq/numa_migrate.c38
-rw-r--r--kernel/softirq.c2
8 files changed, 70 insertions, 78 deletions
diff --git a/kernel/irq/Makefile b/kernel/irq/Makefile
index 3394f8f52964..7d047808419d 100644
--- a/kernel/irq/Makefile
+++ b/kernel/irq/Makefile
@@ -3,5 +3,5 @@ obj-y := handle.o manage.o spurious.o resend.o chip.o devres.o
3obj-$(CONFIG_GENERIC_IRQ_PROBE) += autoprobe.o 3obj-$(CONFIG_GENERIC_IRQ_PROBE) += autoprobe.o
4obj-$(CONFIG_PROC_FS) += proc.o 4obj-$(CONFIG_PROC_FS) += proc.o
5obj-$(CONFIG_GENERIC_PENDING_IRQ) += migration.o 5obj-$(CONFIG_GENERIC_PENDING_IRQ) += migration.o
6obj-$(CONFIG_NUMA_MIGRATE_IRQ_DESC) += numa_migrate.o 6obj-$(CONFIG_NUMA_IRQ_DESC) += numa_migrate.o
7obj-$(CONFIG_PM_SLEEP) += pm.o 7obj-$(CONFIG_PM_SLEEP) += pm.o
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index c687ba4363f2..13c68e71b726 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -359,7 +359,6 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
359 359
360 spin_lock(&desc->lock); 360 spin_lock(&desc->lock);
361 mask_ack_irq(desc, irq); 361 mask_ack_irq(desc, irq);
362 desc = irq_remap_to_desc(irq, desc);
363 362
364 if (unlikely(desc->status & IRQ_INPROGRESS)) 363 if (unlikely(desc->status & IRQ_INPROGRESS))
365 goto out_unlock; 364 goto out_unlock;
@@ -438,7 +437,6 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
438 desc->status &= ~IRQ_INPROGRESS; 437 desc->status &= ~IRQ_INPROGRESS;
439out: 438out:
440 desc->chip->eoi(irq); 439 desc->chip->eoi(irq);
441 desc = irq_remap_to_desc(irq, desc);
442 440
443 spin_unlock(&desc->lock); 441 spin_unlock(&desc->lock);
444} 442}
@@ -475,7 +473,6 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
475 !desc->action)) { 473 !desc->action)) {
476 desc->status |= (IRQ_PENDING | IRQ_MASKED); 474 desc->status |= (IRQ_PENDING | IRQ_MASKED);
477 mask_ack_irq(desc, irq); 475 mask_ack_irq(desc, irq);
478 desc = irq_remap_to_desc(irq, desc);
479 goto out_unlock; 476 goto out_unlock;
480 } 477 }
481 kstat_incr_irqs_this_cpu(irq, desc); 478 kstat_incr_irqs_this_cpu(irq, desc);
@@ -483,7 +480,6 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
483 /* Start handling the irq */ 480 /* Start handling the irq */
484 if (desc->chip->ack) 481 if (desc->chip->ack)
485 desc->chip->ack(irq); 482 desc->chip->ack(irq);
486 desc = irq_remap_to_desc(irq, desc);
487 483
488 /* Mark the IRQ currently in progress.*/ 484 /* Mark the IRQ currently in progress.*/
489 desc->status |= IRQ_INPROGRESS; 485 desc->status |= IRQ_INPROGRESS;
@@ -544,10 +540,8 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
544 if (!noirqdebug) 540 if (!noirqdebug)
545 note_interrupt(irq, desc, action_ret); 541 note_interrupt(irq, desc, action_ret);
546 542
547 if (desc->chip->eoi) { 543 if (desc->chip->eoi)
548 desc->chip->eoi(irq); 544 desc->chip->eoi(irq);
549 desc = irq_remap_to_desc(irq, desc);
550 }
551} 545}
552 546
553void 547void
@@ -582,10 +576,8 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
582 576
583 /* Uninstall? */ 577 /* Uninstall? */
584 if (handle == handle_bad_irq) { 578 if (handle == handle_bad_irq) {
585 if (desc->chip != &no_irq_chip) { 579 if (desc->chip != &no_irq_chip)
586 mask_ack_irq(desc, irq); 580 mask_ack_irq(desc, irq);
587 desc = irq_remap_to_desc(irq, desc);
588 }
589 desc->status |= IRQ_DISABLED; 581 desc->status |= IRQ_DISABLED;
590 desc->depth = 1; 582 desc->depth = 1;
591 } 583 }
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 26e08754744f..18041a254d32 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -11,6 +11,7 @@
11 */ 11 */
12 12
13#include <linux/irq.h> 13#include <linux/irq.h>
14#include <linux/slab.h>
14#include <linux/module.h> 15#include <linux/module.h>
15#include <linux/random.h> 16#include <linux/random.h>
16#include <linux/interrupt.h> 17#include <linux/interrupt.h>
@@ -81,45 +82,48 @@ static struct irq_desc irq_desc_init = {
81 .lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock), 82 .lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
82}; 83};
83 84
84void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr) 85void __ref init_kstat_irqs(struct irq_desc *desc, int node, int nr)
85{ 86{
86 int node;
87 void *ptr; 87 void *ptr;
88 88
89 node = cpu_to_node(cpu); 89 if (slab_is_available())
90 ptr = kzalloc_node(nr * sizeof(*desc->kstat_irqs), GFP_ATOMIC, node); 90 ptr = kzalloc_node(nr * sizeof(*desc->kstat_irqs),
91 GFP_ATOMIC, node);
92 else
93 ptr = alloc_bootmem_node(NODE_DATA(node),
94 nr * sizeof(*desc->kstat_irqs));
91 95
92 /* 96 /*
93 * don't overwite if can not get new one 97 * don't overwite if can not get new one
94 * init_copy_kstat_irqs() could still use old one 98 * init_copy_kstat_irqs() could still use old one
95 */ 99 */
96 if (ptr) { 100 if (ptr) {
97 printk(KERN_DEBUG " alloc kstat_irqs on cpu %d node %d\n", 101 printk(KERN_DEBUG " alloc kstat_irqs on node %d\n", node);
98 cpu, node);
99 desc->kstat_irqs = ptr; 102 desc->kstat_irqs = ptr;
100 } 103 }
101} 104}
102 105
103static void init_one_irq_desc(int irq, struct irq_desc *desc, int cpu) 106static void init_one_irq_desc(int irq, struct irq_desc *desc, int node)
104{ 107{
105 memcpy(desc, &irq_desc_init, sizeof(struct irq_desc)); 108 memcpy(desc, &irq_desc_init, sizeof(struct irq_desc));
106 109
107 spin_lock_init(&desc->lock); 110 spin_lock_init(&desc->lock);
108 desc->irq = irq; 111 desc->irq = irq;
109#ifdef CONFIG_SMP 112#ifdef CONFIG_SMP
110 desc->cpu = cpu; 113 desc->node = node;
111#endif 114#endif
112 lockdep_set_class(&desc->lock, &irq_desc_lock_class); 115 lockdep_set_class(&desc->lock, &irq_desc_lock_class);
113 init_kstat_irqs(desc, cpu, nr_cpu_ids); 116 init_kstat_irqs(desc, node, nr_cpu_ids);
114 if (!desc->kstat_irqs) { 117 if (!desc->kstat_irqs) {
115 printk(KERN_ERR "can not alloc kstat_irqs\n"); 118 printk(KERN_ERR "can not alloc kstat_irqs\n");
116 BUG_ON(1); 119 BUG_ON(1);
117 } 120 }
118 if (!init_alloc_desc_masks(desc, cpu, false)) { 121 if (!alloc_desc_masks(desc, node, false)) {
119 printk(KERN_ERR "can not alloc irq_desc cpumasks\n"); 122 printk(KERN_ERR "can not alloc irq_desc cpumasks\n");
120 BUG_ON(1); 123 BUG_ON(1);
121 } 124 }
122 arch_init_chip_data(desc, cpu); 125 init_desc_masks(desc);
126 arch_init_chip_data(desc, node);
123} 127}
124 128
125/* 129/*
@@ -169,7 +173,8 @@ int __init early_irq_init(void)
169 desc[i].irq = i; 173 desc[i].irq = i;
170 desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids; 174 desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids;
171 lockdep_set_class(&desc[i].lock, &irq_desc_lock_class); 175 lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
172 init_alloc_desc_masks(&desc[i], 0, true); 176 alloc_desc_masks(&desc[i], 0, true);
177 init_desc_masks(&desc[i]);
173 irq_desc_ptrs[i] = desc + i; 178 irq_desc_ptrs[i] = desc + i;
174 } 179 }
175 180
@@ -187,11 +192,10 @@ struct irq_desc *irq_to_desc(unsigned int irq)
187 return NULL; 192 return NULL;
188} 193}
189 194
190struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu) 195struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node)
191{ 196{
192 struct irq_desc *desc; 197 struct irq_desc *desc;
193 unsigned long flags; 198 unsigned long flags;
194 int node;
195 199
196 if (irq >= nr_irqs) { 200 if (irq >= nr_irqs) {
197 WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n", 201 WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n",
@@ -210,15 +214,17 @@ struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
210 if (desc) 214 if (desc)
211 goto out_unlock; 215 goto out_unlock;
212 216
213 node = cpu_to_node(cpu); 217 if (slab_is_available())
214 desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node); 218 desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
215 printk(KERN_DEBUG " alloc irq_desc for %d on cpu %d node %d\n", 219 else
216 irq, cpu, node); 220 desc = alloc_bootmem_node(NODE_DATA(node), sizeof(*desc));
221
222 printk(KERN_DEBUG " alloc irq_desc for %d on node %d\n", irq, node);
217 if (!desc) { 223 if (!desc) {
218 printk(KERN_ERR "can not alloc irq_desc\n"); 224 printk(KERN_ERR "can not alloc irq_desc\n");
219 BUG_ON(1); 225 BUG_ON(1);
220 } 226 }
221 init_one_irq_desc(irq, desc, cpu); 227 init_one_irq_desc(irq, desc, node);
222 228
223 irq_desc_ptrs[irq] = desc; 229 irq_desc_ptrs[irq] = desc;
224 230
@@ -256,7 +262,8 @@ int __init early_irq_init(void)
256 262
257 for (i = 0; i < count; i++) { 263 for (i = 0; i < count; i++) {
258 desc[i].irq = i; 264 desc[i].irq = i;
259 init_alloc_desc_masks(&desc[i], 0, true); 265 alloc_desc_masks(&desc[i], 0, true);
266 init_desc_masks(&desc[i]);
260 desc[i].kstat_irqs = kstat_irqs_all[i]; 267 desc[i].kstat_irqs = kstat_irqs_all[i];
261 } 268 }
262 return arch_early_irq_init(); 269 return arch_early_irq_init();
@@ -267,7 +274,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
267 return (irq < NR_IRQS) ? irq_desc + irq : NULL; 274 return (irq < NR_IRQS) ? irq_desc + irq : NULL;
268} 275}
269 276
270struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu) 277struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node)
271{ 278{
272 return irq_to_desc(irq); 279 return irq_to_desc(irq);
273} 280}
@@ -453,11 +460,8 @@ unsigned int __do_IRQ(unsigned int irq)
453 /* 460 /*
454 * No locking required for CPU-local interrupts: 461 * No locking required for CPU-local interrupts:
455 */ 462 */
456 if (desc->chip->ack) { 463 if (desc->chip->ack)
457 desc->chip->ack(irq); 464 desc->chip->ack(irq);
458 /* get new one */
459 desc = irq_remap_to_desc(irq, desc);
460 }
461 if (likely(!(desc->status & IRQ_DISABLED))) { 465 if (likely(!(desc->status & IRQ_DISABLED))) {
462 action_ret = handle_IRQ_event(irq, desc->action); 466 action_ret = handle_IRQ_event(irq, desc->action);
463 if (!noirqdebug) 467 if (!noirqdebug)
@@ -468,10 +472,8 @@ unsigned int __do_IRQ(unsigned int irq)
468 } 472 }
469 473
470 spin_lock(&desc->lock); 474 spin_lock(&desc->lock);
471 if (desc->chip->ack) { 475 if (desc->chip->ack)
472 desc->chip->ack(irq); 476 desc->chip->ack(irq);
473 desc = irq_remap_to_desc(irq, desc);
474 }
475 /* 477 /*
476 * REPLAY is when Linux resends an IRQ that was dropped earlier 478 * REPLAY is when Linux resends an IRQ that was dropped earlier
477 * WAITING is used by probe to mark irqs that are being tested 479 * WAITING is used by probe to mark irqs that are being tested
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 01ce20eab38f..73468253143b 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -16,7 +16,7 @@ extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
16extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); 16extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume);
17 17
18extern struct lock_class_key irq_desc_lock_class; 18extern struct lock_class_key irq_desc_lock_class;
19extern void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr); 19extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
20extern void clear_kstat_irqs(struct irq_desc *desc); 20extern void clear_kstat_irqs(struct irq_desc *desc);
21extern spinlock_t sparse_irq_lock; 21extern spinlock_t sparse_irq_lock;
22 22
@@ -42,6 +42,9 @@ static inline void unregister_handler_proc(unsigned int irq,
42 42
43extern int irq_select_affinity_usr(unsigned int irq); 43extern int irq_select_affinity_usr(unsigned int irq);
44 44
45extern void
46irq_set_thread_affinity(struct irq_desc *desc, const struct cpumask *cpumask);
47
45/* 48/*
46 * Debugging printout: 49 * Debugging printout:
47 */ 50 */
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 2734eca59243..aaf5c9d05770 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -80,7 +80,7 @@ int irq_can_set_affinity(unsigned int irq)
80 return 1; 80 return 1;
81} 81}
82 82
83static void 83void
84irq_set_thread_affinity(struct irq_desc *desc, const struct cpumask *cpumask) 84irq_set_thread_affinity(struct irq_desc *desc, const struct cpumask *cpumask)
85{ 85{
86 struct irqaction *action = desc->action; 86 struct irqaction *action = desc->action;
@@ -109,17 +109,22 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
109 spin_lock_irqsave(&desc->lock, flags); 109 spin_lock_irqsave(&desc->lock, flags);
110 110
111#ifdef CONFIG_GENERIC_PENDING_IRQ 111#ifdef CONFIG_GENERIC_PENDING_IRQ
112 if (desc->status & IRQ_MOVE_PCNTXT) 112 if (desc->status & IRQ_MOVE_PCNTXT) {
113 desc->chip->set_affinity(irq, cpumask); 113 if (!desc->chip->set_affinity(irq, cpumask)) {
114 cpumask_copy(desc->affinity, cpumask);
115 irq_set_thread_affinity(desc, cpumask);
116 }
117 }
114 else { 118 else {
115 desc->status |= IRQ_MOVE_PENDING; 119 desc->status |= IRQ_MOVE_PENDING;
116 cpumask_copy(desc->pending_mask, cpumask); 120 cpumask_copy(desc->pending_mask, cpumask);
117 } 121 }
118#else 122#else
119 cpumask_copy(desc->affinity, cpumask); 123 if (!desc->chip->set_affinity(irq, cpumask)) {
120 desc->chip->set_affinity(irq, cpumask); 124 cpumask_copy(desc->affinity, cpumask);
125 irq_set_thread_affinity(desc, cpumask);
126 }
121#endif 127#endif
122 irq_set_thread_affinity(desc, cpumask);
123 desc->status |= IRQ_AFFINITY_SET; 128 desc->status |= IRQ_AFFINITY_SET;
124 spin_unlock_irqrestore(&desc->lock, flags); 129 spin_unlock_irqrestore(&desc->lock, flags);
125 return 0; 130 return 0;
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index e05ad9be43b7..cfe767ca1545 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -1,5 +1,8 @@
1 1
2#include <linux/irq.h> 2#include <linux/irq.h>
3#include <linux/interrupt.h>
4
5#include "internals.h"
3 6
4void move_masked_irq(int irq) 7void move_masked_irq(int irq)
5{ 8{
@@ -39,11 +42,12 @@ void move_masked_irq(int irq)
39 * masking the irqs. 42 * masking the irqs.
40 */ 43 */
41 if (likely(cpumask_any_and(desc->pending_mask, cpu_online_mask) 44 if (likely(cpumask_any_and(desc->pending_mask, cpu_online_mask)
42 < nr_cpu_ids)) { 45 < nr_cpu_ids))
43 cpumask_and(desc->affinity, 46 if (!desc->chip->set_affinity(irq, desc->pending_mask)) {
44 desc->pending_mask, cpu_online_mask); 47 cpumask_copy(desc->affinity, desc->pending_mask);
45 desc->chip->set_affinity(irq, desc->affinity); 48 irq_set_thread_affinity(desc, desc->pending_mask);
46 } 49 }
50
47 cpumask_clear(desc->pending_mask); 51 cpumask_clear(desc->pending_mask);
48} 52}
49 53
diff --git a/kernel/irq/numa_migrate.c b/kernel/irq/numa_migrate.c
index 44bbdcbaf8d2..2f69bee57bf2 100644
--- a/kernel/irq/numa_migrate.c
+++ b/kernel/irq/numa_migrate.c
@@ -15,9 +15,9 @@
15 15
16static void init_copy_kstat_irqs(struct irq_desc *old_desc, 16static void init_copy_kstat_irqs(struct irq_desc *old_desc,
17 struct irq_desc *desc, 17 struct irq_desc *desc,
18 int cpu, int nr) 18 int node, int nr)
19{ 19{
20 init_kstat_irqs(desc, cpu, nr); 20 init_kstat_irqs(desc, node, nr);
21 21
22 if (desc->kstat_irqs != old_desc->kstat_irqs) 22 if (desc->kstat_irqs != old_desc->kstat_irqs)
23 memcpy(desc->kstat_irqs, old_desc->kstat_irqs, 23 memcpy(desc->kstat_irqs, old_desc->kstat_irqs,
@@ -34,20 +34,20 @@ static void free_kstat_irqs(struct irq_desc *old_desc, struct irq_desc *desc)
34} 34}
35 35
36static bool init_copy_one_irq_desc(int irq, struct irq_desc *old_desc, 36static bool init_copy_one_irq_desc(int irq, struct irq_desc *old_desc,
37 struct irq_desc *desc, int cpu) 37 struct irq_desc *desc, int node)
38{ 38{
39 memcpy(desc, old_desc, sizeof(struct irq_desc)); 39 memcpy(desc, old_desc, sizeof(struct irq_desc));
40 if (!init_alloc_desc_masks(desc, cpu, false)) { 40 if (!alloc_desc_masks(desc, node, false)) {
41 printk(KERN_ERR "irq %d: can not get new irq_desc cpumask " 41 printk(KERN_ERR "irq %d: can not get new irq_desc cpumask "
42 "for migration.\n", irq); 42 "for migration.\n", irq);
43 return false; 43 return false;
44 } 44 }
45 spin_lock_init(&desc->lock); 45 spin_lock_init(&desc->lock);
46 desc->cpu = cpu; 46 desc->node = node;
47 lockdep_set_class(&desc->lock, &irq_desc_lock_class); 47 lockdep_set_class(&desc->lock, &irq_desc_lock_class);
48 init_copy_kstat_irqs(old_desc, desc, cpu, nr_cpu_ids); 48 init_copy_kstat_irqs(old_desc, desc, node, nr_cpu_ids);
49 init_copy_desc_masks(old_desc, desc); 49 init_copy_desc_masks(old_desc, desc);
50 arch_init_copy_chip_data(old_desc, desc, cpu); 50 arch_init_copy_chip_data(old_desc, desc, node);
51 return true; 51 return true;
52} 52}
53 53
@@ -59,12 +59,11 @@ static void free_one_irq_desc(struct irq_desc *old_desc, struct irq_desc *desc)
59} 59}
60 60
61static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc, 61static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc,
62 int cpu) 62 int node)
63{ 63{
64 struct irq_desc *desc; 64 struct irq_desc *desc;
65 unsigned int irq; 65 unsigned int irq;
66 unsigned long flags; 66 unsigned long flags;
67 int node;
68 67
69 irq = old_desc->irq; 68 irq = old_desc->irq;
70 69
@@ -76,7 +75,6 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc,
76 if (desc && old_desc != desc) 75 if (desc && old_desc != desc)
77 goto out_unlock; 76 goto out_unlock;
78 77
79 node = cpu_to_node(cpu);
80 desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node); 78 desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
81 if (!desc) { 79 if (!desc) {
82 printk(KERN_ERR "irq %d: can not get new irq_desc " 80 printk(KERN_ERR "irq %d: can not get new irq_desc "
@@ -85,7 +83,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc,
85 desc = old_desc; 83 desc = old_desc;
86 goto out_unlock; 84 goto out_unlock;
87 } 85 }
88 if (!init_copy_one_irq_desc(irq, old_desc, desc, cpu)) { 86 if (!init_copy_one_irq_desc(irq, old_desc, desc, node)) {
89 /* still use old one */ 87 /* still use old one */
90 kfree(desc); 88 kfree(desc);
91 desc = old_desc; 89 desc = old_desc;
@@ -97,9 +95,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc,
97 95
98 /* free the old one */ 96 /* free the old one */
99 free_one_irq_desc(old_desc, desc); 97 free_one_irq_desc(old_desc, desc);
100 spin_unlock(&old_desc->lock);
101 kfree(old_desc); 98 kfree(old_desc);
102 spin_lock(&desc->lock);
103 99
104 return desc; 100 return desc;
105 101
@@ -109,24 +105,14 @@ out_unlock:
109 return desc; 105 return desc;
110} 106}
111 107
112struct irq_desc *move_irq_desc(struct irq_desc *desc, int cpu) 108struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
113{ 109{
114 int old_cpu;
115 int node, old_node;
116
117 /* those all static, do move them */ 110 /* those all static, do move them */
118 if (desc->irq < NR_IRQS_LEGACY) 111 if (desc->irq < NR_IRQS_LEGACY)
119 return desc; 112 return desc;
120 113
121 old_cpu = desc->cpu; 114 if (desc->node != node)
122 if (old_cpu != cpu) { 115 desc = __real_move_irq_desc(desc, node);
123 node = cpu_to_node(cpu);
124 old_node = cpu_to_node(old_cpu);
125 if (old_node != node)
126 desc = __real_move_irq_desc(desc, cpu);
127 else
128 desc->cpu = cpu;
129 }
130 116
131 return desc; 117 return desc;
132} 118}
diff --git a/kernel/softirq.c b/kernel/softirq.c
index b525dd348511..f674f332a024 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -828,7 +828,7 @@ int __init __weak arch_early_irq_init(void)
828 return 0; 828 return 0;
829} 829}
830 830
831int __weak arch_init_chip_data(struct irq_desc *desc, int cpu) 831int __weak arch_init_chip_data(struct irq_desc *desc, int node)
832{ 832{
833 return 0; 833 return 0;
834} 834}