diff options
Diffstat (limited to 'arch/x86/kernel/irq.c')
-rw-r--r-- | arch/x86/kernel/irq.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index f13ca1650aaf..b864341dcc45 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c | |||
@@ -15,6 +15,9 @@ | |||
15 | 15 | ||
16 | atomic_t irq_err_count; | 16 | atomic_t irq_err_count; |
17 | 17 | ||
18 | /* Function pointer for generic interrupt vector handling */ | ||
19 | void (*generic_interrupt_extension)(void) = NULL; | ||
20 | |||
18 | /* | 21 | /* |
19 | * 'what should we do if we get a hw irq event on an illegal vector'. | 22 | * 'what should we do if we get a hw irq event on an illegal vector'. |
20 | * each architecture has to answer this themselves. | 23 | * each architecture has to answer this themselves. |
@@ -56,6 +59,12 @@ static int show_other_interrupts(struct seq_file *p) | |||
56 | seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs); | 59 | seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs); |
57 | seq_printf(p, " Local timer interrupts\n"); | 60 | seq_printf(p, " Local timer interrupts\n"); |
58 | #endif | 61 | #endif |
62 | if (generic_interrupt_extension) { | ||
63 | seq_printf(p, "PLT: "); | ||
64 | for_each_online_cpu(j) | ||
65 | seq_printf(p, "%10u ", irq_stats(j)->generic_irqs); | ||
66 | seq_printf(p, " Platform interrupts\n"); | ||
67 | } | ||
59 | #ifdef CONFIG_SMP | 68 | #ifdef CONFIG_SMP |
60 | seq_printf(p, "RES: "); | 69 | seq_printf(p, "RES: "); |
61 | for_each_online_cpu(j) | 70 | for_each_online_cpu(j) |
@@ -163,6 +172,8 @@ u64 arch_irq_stat_cpu(unsigned int cpu) | |||
163 | #ifdef CONFIG_X86_LOCAL_APIC | 172 | #ifdef CONFIG_X86_LOCAL_APIC |
164 | sum += irq_stats(cpu)->apic_timer_irqs; | 173 | sum += irq_stats(cpu)->apic_timer_irqs; |
165 | #endif | 174 | #endif |
175 | if (generic_interrupt_extension) | ||
176 | sum += irq_stats(cpu)->generic_irqs; | ||
166 | #ifdef CONFIG_SMP | 177 | #ifdef CONFIG_SMP |
167 | sum += irq_stats(cpu)->irq_resched_count; | 178 | sum += irq_stats(cpu)->irq_resched_count; |
168 | sum += irq_stats(cpu)->irq_call_count; | 179 | sum += irq_stats(cpu)->irq_call_count; |
@@ -226,4 +237,27 @@ unsigned int __irq_entry do_IRQ(struct pt_regs *regs) | |||
226 | return 1; | 237 | return 1; |
227 | } | 238 | } |
228 | 239 | ||
240 | /* | ||
241 | * Handler for GENERIC_INTERRUPT_VECTOR. | ||
242 | */ | ||
243 | void smp_generic_interrupt(struct pt_regs *regs) | ||
244 | { | ||
245 | struct pt_regs *old_regs = set_irq_regs(regs); | ||
246 | |||
247 | ack_APIC_irq(); | ||
248 | |||
249 | exit_idle(); | ||
250 | |||
251 | irq_enter(); | ||
252 | |||
253 | inc_irq_stat(generic_irqs); | ||
254 | |||
255 | if (generic_interrupt_extension) | ||
256 | generic_interrupt_extension(); | ||
257 | |||
258 | irq_exit(); | ||
259 | |||
260 | set_irq_regs(old_regs); | ||
261 | } | ||
262 | |||
229 | EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq); | 263 | EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq); |