1 files changed, 26 insertions, 8 deletions

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index ba180d93b08..08c48a81841 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -27,7 +27,7 @@
 
 /* Interrupt handlers registered during init_IRQ */
 extern void apic_timer_interrupt(void);
-extern void generic_interrupt(void);
+extern void x86_platform_ipi(void);
 extern void error_interrupt(void);
 extern void perf_pending_interrupt(void);
 
@@ -79,14 +79,32 @@ static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
                                         int ioapic, int ioapic_pin,
                                         int trigger, int polarity)
 {
-        irq_attr->ioapic     = ioapic;
-        irq_attr->ioapic_pin = ioapic_pin;
-        irq_attr->trigger    = trigger;
-        irq_attr->polarity   = polarity;
+        irq_attr->ioapic        = ioapic;
+        irq_attr->ioapic_pin    = ioapic_pin;
+        irq_attr->trigger       = trigger;
+        irq_attr->polarity      = polarity;
 }
 
-extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin,
-                                        struct io_apic_irq_attr *irq_attr);
+/*
+ * This is performance-critical, we want to do it O(1)
+ *
+ * Most irqs are mapped 1:1 with pins.
+ */
+struct irq_cfg {
+        struct irq_pin_list     *irq_2_pin;
+        cpumask_var_t           domain;
+        cpumask_var_t           old_domain;
+        u8                      vector;
+        u8                      move_in_progress : 1;
+};
+
+extern struct irq_cfg *irq_cfg(unsigned int);
+extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
+extern void send_cleanup_vector(struct irq_cfg *);
+
+struct irq_desc;
+extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *);
+extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
 extern void setup_ioapic_dest(void);
 
 extern void enable_IO_APIC(void);
@@ -101,7 +119,7 @@ extern void eisa_set_level_irq(unsigned int irq);
 /* SMP */
 extern void smp_apic_timer_interrupt(struct pt_regs *);
 extern void smp_spurious_interrupt(struct pt_regs *);
-extern void smp_generic_interrupt(struct pt_regs *);
+extern void smp_x86_platform_ipi(struct pt_regs *);
 extern void smp_error_interrupt(struct pt_regs *);
 #ifdef CONFIG_X86_IO_APIC
 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);