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Diffstat (limited to 'arch/x86/kernel/irq.c')
-rw-r--r--arch/x86/kernel/irq.c91
1 files changed, 16 insertions, 75 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 387b6a0c9e8..948a31eae75 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -44,9 +44,9 @@ void ack_bad_irq(unsigned int irq)
44 44
45#define irq_stats(x) (&per_cpu(irq_stat, x)) 45#define irq_stats(x) (&per_cpu(irq_stat, x))
46/* 46/*
47 * /proc/interrupts printing: 47 * /proc/interrupts printing for arch specific interrupts
48 */ 48 */
49static int show_other_interrupts(struct seq_file *p, int prec) 49int arch_show_interrupts(struct seq_file *p, int prec)
50{ 50{
51 int j; 51 int j;
52 52
@@ -122,59 +122,6 @@ static int show_other_interrupts(struct seq_file *p, int prec)
122 return 0; 122 return 0;
123} 123}
124 124
125int show_interrupts(struct seq_file *p, void *v)
126{
127 unsigned long flags, any_count = 0;
128 int i = *(loff_t *) v, j, prec;
129 struct irqaction *action;
130 struct irq_desc *desc;
131
132 if (i > nr_irqs)
133 return 0;
134
135 for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec)
136 j *= 10;
137
138 if (i == nr_irqs)
139 return show_other_interrupts(p, prec);
140
141 /* print header */
142 if (i == 0) {
143 seq_printf(p, "%*s", prec + 8, "");
144 for_each_online_cpu(j)
145 seq_printf(p, "CPU%-8d", j);
146 seq_putc(p, '\n');
147 }
148
149 desc = irq_to_desc(i);
150 if (!desc)
151 return 0;
152
153 raw_spin_lock_irqsave(&desc->lock, flags);
154 for_each_online_cpu(j)
155 any_count |= kstat_irqs_cpu(i, j);
156 action = desc->action;
157 if (!action && !any_count)
158 goto out;
159
160 seq_printf(p, "%*d: ", prec, i);
161 for_each_online_cpu(j)
162 seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
163 seq_printf(p, " %8s", desc->irq_data.chip->name);
164 seq_printf(p, "-%-8s", desc->name);
165
166 if (action) {
167 seq_printf(p, " %s", action->name);
168 while ((action = action->next) != NULL)
169 seq_printf(p, ", %s", action->name);
170 }
171
172 seq_putc(p, '\n');
173out:
174 raw_spin_unlock_irqrestore(&desc->lock, flags);
175 return 0;
176}
177
178/* 125/*
179 * /proc/stat helpers 126 * /proc/stat helpers
180 */ 127 */
@@ -276,15 +223,6 @@ void smp_x86_platform_ipi(struct pt_regs *regs)
276 223
277EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq); 224EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);
278 225
279#ifdef CONFIG_OF
280unsigned int irq_create_of_mapping(struct device_node *controller,
281 const u32 *intspec, unsigned int intsize)
282{
283 return intspec[0];
284}
285EXPORT_SYMBOL_GPL(irq_create_of_mapping);
286#endif
287
288#ifdef CONFIG_HOTPLUG_CPU 226#ifdef CONFIG_HOTPLUG_CPU
289/* A cpu has been removed from cpu_online_mask. Reset irq affinities. */ 227/* A cpu has been removed from cpu_online_mask. Reset irq affinities. */
290void fixup_irqs(void) 228void fixup_irqs(void)
@@ -293,6 +231,7 @@ void fixup_irqs(void)
293 static int warned; 231 static int warned;
294 struct irq_desc *desc; 232 struct irq_desc *desc;
295 struct irq_data *data; 233 struct irq_data *data;
234 struct irq_chip *chip;
296 235
297 for_each_irq_desc(irq, desc) { 236 for_each_irq_desc(irq, desc) {
298 int break_affinity = 0; 237 int break_affinity = 0;
@@ -307,10 +246,10 @@ void fixup_irqs(void)
307 /* interrupt's are disabled at this point */ 246 /* interrupt's are disabled at this point */
308 raw_spin_lock(&desc->lock); 247 raw_spin_lock(&desc->lock);
309 248
310 data = &desc->irq_data; 249 data = irq_desc_get_irq_data(desc);
311 affinity = data->affinity; 250 affinity = data->affinity;
312 if (!irq_has_action(irq) || 251 if (!irq_has_action(irq) ||
313 cpumask_equal(affinity, cpu_online_mask)) { 252 cpumask_subset(affinity, cpu_online_mask)) {
314 raw_spin_unlock(&desc->lock); 253 raw_spin_unlock(&desc->lock);
315 continue; 254 continue;
316 } 255 }
@@ -327,16 +266,17 @@ void fixup_irqs(void)
327 affinity = cpu_all_mask; 266 affinity = cpu_all_mask;
328 } 267 }
329 268
330 if (!(desc->status & IRQ_MOVE_PCNTXT) && data->chip->irq_mask) 269 chip = irq_data_get_irq_chip(data);
331 data->chip->irq_mask(data); 270 if (!irqd_can_move_in_process_context(data) && chip->irq_mask)
271 chip->irq_mask(data);
332 272
333 if (data->chip->irq_set_affinity) 273 if (chip->irq_set_affinity)
334 data->chip->irq_set_affinity(data, affinity, true); 274 chip->irq_set_affinity(data, affinity, true);
335 else if (!(warned++)) 275 else if (!(warned++))
336 set_affinity = 0; 276 set_affinity = 0;
337 277
338 if (!(desc->status & IRQ_MOVE_PCNTXT) && data->chip->irq_unmask) 278 if (!irqd_can_move_in_process_context(data) && chip->irq_unmask)
339 data->chip->irq_unmask(data); 279 chip->irq_unmask(data);
340 280
341 raw_spin_unlock(&desc->lock); 281 raw_spin_unlock(&desc->lock);
342 282
@@ -368,10 +308,11 @@ void fixup_irqs(void)
368 irq = __this_cpu_read(vector_irq[vector]); 308 irq = __this_cpu_read(vector_irq[vector]);
369 309
370 desc = irq_to_desc(irq); 310 desc = irq_to_desc(irq);
371 data = &desc->irq_data; 311 data = irq_desc_get_irq_data(desc);
312 chip = irq_data_get_irq_chip(data);
372 raw_spin_lock(&desc->lock); 313 raw_spin_lock(&desc->lock);
373 if (data->chip->irq_retrigger) 314 if (chip->irq_retrigger)
374 data->chip->irq_retrigger(data); 315 chip->irq_retrigger(data);
375 raw_spin_unlock(&desc->lock); 316 raw_spin_unlock(&desc->lock);
376 } 317 }
377 } 318 }