Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...

[pandora-kernel.git] / arch / x86 / kernel / irq_64.c

diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 63c88e6..977d8b4 100644 (file)
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -18,6 +18,13 @@
 #include <linux/smp.h>
 #include <asm/io_apic.h>
 #include <asm/idle.h>
+#include <asm/apic.h>
+
+DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
+EXPORT_PER_CPU_SYMBOL(irq_stat);
+
+DEFINE_PER_CPU(struct pt_regs *, irq_regs);
+EXPORT_PER_CPU_SYMBOL(irq_regs);
 
 /*
  * Probabilistic stack overflow check:
@@ -41,42 +48,18 @@ static inline void stack_overflow_check(struct pt_regs *regs)
 #endif
 }
 
-/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- */
-asmlinkage unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
+bool handle_irq(unsigned irq, struct pt_regs *regs)
 {
-       struct pt_regs *old_regs = set_irq_regs(regs);
        struct irq_desc *desc;
 
-       /* high bit used in ret_from_ code  */
-       unsigned vector = ~regs->orig_ax;
-       unsigned irq;
-
-       exit_idle();
-       irq_enter();
-       irq = __get_cpu_var(vector_irq)[vector];
-
        stack_overflow_check(regs);
 
        desc = irq_to_desc(irq);
-       if (likely(desc))
-               generic_handle_irq_desc(irq, desc);
-       else {
-               if (!disable_apic)
-                       ack_APIC_irq();
-
-               if (printk_ratelimit())
-                       printk(KERN_EMERG "%s: %d.%d No irq handler for vector\n",
-                               __func__, smp_processor_id(), vector);
-       }
-
-       irq_exit();
+       if (unlikely(!desc))
+               return false;
 
-       set_irq_regs(old_regs);
-       return 1;
+       generic_handle_irq_desc(irq, desc);
+       return true;
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -100,7 +83,7 @@ void fixup_irqs(void)
                /* interrupt's are disabled at this point */
                spin_lock(&desc->lock);
 
-               affinity = &desc->affinity;
+               affinity = desc->affinity;
                if (!irq_has_action(irq) ||
                    cpumask_equal(affinity, cpu_online_mask)) {
                        spin_unlock(&desc->lock);