diff options
-rw-r--r-- | arch/x86/include/asm/irq.h | 3 | ||||
-rw-r--r-- | arch/x86/kernel/irq.c | 38 | ||||
-rw-r--r-- | arch/x86/kernel/irq_32.c | 27 | ||||
-rw-r--r-- | arch/x86/kernel/irq_64.c | 33 |
4 files changed, 40 insertions, 61 deletions
diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h index d0f6f7d1771c..107eb2196691 100644 --- a/arch/x86/include/asm/irq.h +++ b/arch/x86/include/asm/irq.h | |||
@@ -36,11 +36,12 @@ static inline int irq_canonicalize(int irq) | |||
36 | extern void fixup_irqs(void); | 36 | extern void fixup_irqs(void); |
37 | #endif | 37 | #endif |
38 | 38 | ||
39 | extern unsigned int do_IRQ(struct pt_regs *regs); | ||
40 | extern void init_IRQ(void); | 39 | extern void init_IRQ(void); |
41 | extern void native_init_IRQ(void); | 40 | extern void native_init_IRQ(void); |
42 | extern bool handle_irq(unsigned irq, struct pt_regs *regs); | 41 | extern bool handle_irq(unsigned irq, struct pt_regs *regs); |
43 | 42 | ||
43 | extern unsigned int do_IRQ(struct pt_regs *regs); | ||
44 | |||
44 | /* Interrupt vector management */ | 45 | /* Interrupt vector management */ |
45 | extern DECLARE_BITMAP(used_vectors, NR_VECTORS); | 46 | extern DECLARE_BITMAP(used_vectors, NR_VECTORS); |
46 | extern int vector_used_by_percpu_irq(unsigned int vector); | 47 | extern int vector_used_by_percpu_irq(unsigned int vector); |
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 8b30d0c2512c..f13ca1650aaf 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c | |||
@@ -6,10 +6,12 @@ | |||
6 | #include <linux/kernel_stat.h> | 6 | #include <linux/kernel_stat.h> |
7 | #include <linux/seq_file.h> | 7 | #include <linux/seq_file.h> |
8 | #include <linux/smp.h> | 8 | #include <linux/smp.h> |
9 | #include <linux/ftrace.h> | ||
9 | 10 | ||
10 | #include <asm/apic.h> | 11 | #include <asm/apic.h> |
11 | #include <asm/io_apic.h> | 12 | #include <asm/io_apic.h> |
12 | #include <asm/irq.h> | 13 | #include <asm/irq.h> |
14 | #include <asm/idle.h> | ||
13 | 15 | ||
14 | atomic_t irq_err_count; | 16 | atomic_t irq_err_count; |
15 | 17 | ||
@@ -188,4 +190,40 @@ u64 arch_irq_stat(void) | |||
188 | return sum; | 190 | return sum; |
189 | } | 191 | } |
190 | 192 | ||
193 | |||
194 | /* | ||
195 | * do_IRQ handles all normal device IRQ's (the special | ||
196 | * SMP cross-CPU interrupts have their own specific | ||
197 | * handlers). | ||
198 | */ | ||
199 | unsigned int __irq_entry do_IRQ(struct pt_regs *regs) | ||
200 | { | ||
201 | struct pt_regs *old_regs = set_irq_regs(regs); | ||
202 | |||
203 | /* high bit used in ret_from_ code */ | ||
204 | unsigned vector = ~regs->orig_ax; | ||
205 | unsigned irq; | ||
206 | |||
207 | exit_idle(); | ||
208 | irq_enter(); | ||
209 | |||
210 | irq = __get_cpu_var(vector_irq)[vector]; | ||
211 | |||
212 | if (!handle_irq(irq, regs)) { | ||
213 | #ifdef CONFIG_X86_64 | ||
214 | if (!disable_apic) | ||
215 | ack_APIC_irq(); | ||
216 | #endif | ||
217 | |||
218 | if (printk_ratelimit()) | ||
219 | printk(KERN_EMERG "%s: %d.%d No irq handler for vector (irq %d)\n", | ||
220 | __func__, smp_processor_id(), vector, irq); | ||
221 | } | ||
222 | |||
223 | irq_exit(); | ||
224 | |||
225 | set_irq_regs(old_regs); | ||
226 | return 1; | ||
227 | } | ||
228 | |||
191 | EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq); | 229 | EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq); |
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c index 61f09fb969ee..4beb9a13873d 100644 --- a/arch/x86/kernel/irq_32.c +++ b/arch/x86/kernel/irq_32.c | |||
@@ -211,33 +211,6 @@ bool handle_irq(unsigned irq, struct pt_regs *regs) | |||
211 | return true; | 211 | return true; |
212 | } | 212 | } |
213 | 213 | ||
214 | /* | ||
215 | * do_IRQ handles all normal device IRQ's (the special | ||
216 | * SMP cross-CPU interrupts have their own specific | ||
217 | * handlers). | ||
218 | */ | ||
219 | unsigned int do_IRQ(struct pt_regs *regs) | ||
220 | { | ||
221 | struct pt_regs *old_regs; | ||
222 | /* high bit used in ret_from_ code */ | ||
223 | unsigned vector = ~regs->orig_ax; | ||
224 | unsigned irq; | ||
225 | |||
226 | old_regs = set_irq_regs(regs); | ||
227 | irq_enter(); | ||
228 | irq = __get_cpu_var(vector_irq)[vector]; | ||
229 | |||
230 | if (!handle_irq(irq, regs)) { | ||
231 | printk(KERN_EMERG "%s: cannot handle IRQ %d vector %#x cpu %d\n", | ||
232 | __func__, irq, vector, smp_processor_id()); | ||
233 | BUG(); | ||
234 | } | ||
235 | |||
236 | irq_exit(); | ||
237 | set_irq_regs(old_regs); | ||
238 | return 1; | ||
239 | } | ||
240 | |||
241 | #ifdef CONFIG_HOTPLUG_CPU | 214 | #ifdef CONFIG_HOTPLUG_CPU |
242 | #include <asm/genapic.h> | 215 | #include <asm/genapic.h> |
243 | 216 | ||
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c index a93f3b0dc7f2..977d8b43a0dd 100644 --- a/arch/x86/kernel/irq_64.c +++ b/arch/x86/kernel/irq_64.c | |||
@@ -62,39 +62,6 @@ bool handle_irq(unsigned irq, struct pt_regs *regs) | |||
62 | return true; | 62 | return true; |
63 | } | 63 | } |
64 | 64 | ||
65 | /* | ||
66 | * do_IRQ handles all normal device IRQ's (the special | ||
67 | * SMP cross-CPU interrupts have their own specific | ||
68 | * handlers). | ||
69 | */ | ||
70 | asmlinkage unsigned int __irq_entry do_IRQ(struct pt_regs *regs) | ||
71 | { | ||
72 | struct pt_regs *old_regs = set_irq_regs(regs); | ||
73 | |||
74 | /* high bit used in ret_from_ code */ | ||
75 | unsigned vector = ~regs->orig_ax; | ||
76 | unsigned irq; | ||
77 | |||
78 | exit_idle(); | ||
79 | irq_enter(); | ||
80 | |||
81 | irq = __get_cpu_var(vector_irq)[vector]; | ||
82 | |||
83 | if (!handle_irq(irq, regs)) { | ||
84 | if (!disable_apic) | ||
85 | ack_APIC_irq(); | ||
86 | |||
87 | if (printk_ratelimit()) | ||
88 | printk(KERN_EMERG "%s: %d.%d No irq handler for vector\n", | ||
89 | __func__, smp_processor_id(), vector); | ||
90 | } | ||
91 | |||
92 | irq_exit(); | ||
93 | |||
94 | set_irq_regs(old_regs); | ||
95 | return 1; | ||
96 | } | ||
97 | |||
98 | #ifdef CONFIG_HOTPLUG_CPU | 65 | #ifdef CONFIG_HOTPLUG_CPU |
99 | /* A cpu has been removed from cpu_online_mask. Reset irq affinities. */ | 66 | /* A cpu has been removed from cpu_online_mask. Reset irq affinities. */ |
100 | void fixup_irqs(void) | 67 | void fixup_irqs(void) |