1 files changed, 17 insertions, 152 deletions

diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 1f78b238d8d..60eb84eb77a 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -18,28 +18,6 @@
 #include <asm/idle.h>
 #include <asm/smp.h>
 
-atomic_t irq_err_count;
-
-/*
- * 'what should we do if we get a hw irq event on an illegal vector'.
- * each architecture has to answer this themselves.
- */
-void ack_bad_irq(unsigned int irq)
-{
-        printk(KERN_WARNING "unexpected IRQ trap at vector %02x\n", irq);
-        /*
-         * Currently unexpected vectors happen only on SMP and APIC.
-         * We _must_ ack these because every local APIC has only N
-         * irq slots per priority level, and a 'hanging, unacked' IRQ
-         * holds up an irq slot - in excessive cases (when multiple
-         * unexpected vectors occur) that might lock up the APIC
-         * completely.
-         * But don't ack when the APIC is disabled. -AK
-         */
-        if (!disable_apic)
-                ack_APIC_irq();
-}
-
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
 /*
  * Probabilistic stack overflow check:
@@ -65,122 +43,6 @@ static inline void stack_overflow_check(struct pt_regs *regs)
 #endif
 
 /*
- * Generic, controller-independent functions:
- */
-
-int show_interrupts(struct seq_file *p, void *v)
-{
-        int i = *(loff_t *) v, j;
-        struct irqaction * action;
-        unsigned long flags;
-
-        if (i == 0) {
-                seq_printf(p, "           ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "CPU%-8d",j);
-                seq_putc(p, '\n');
-        }
-
-        if (i < NR_IRQS) {
-                unsigned any_count = 0;
-
-                spin_lock_irqsave(&irq_desc[i].lock, flags);
-#ifndef CONFIG_SMP
-                any_count = kstat_irqs(i);
-#else
-                for_each_online_cpu(j)
-                        any_count |= kstat_cpu(j).irqs[i];
-#endif
-                action = irq_desc[i].action;
-                if (!action && !any_count)
-                        goto skip;
-                seq_printf(p, "%3d: ",i);
-#ifndef CONFIG_SMP
-                seq_printf(p, "%10u ", kstat_irqs(i));
-#else
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
-#endif
-                seq_printf(p, " %8s", irq_desc[i].chip->name);
-                seq_printf(p, "-%-8s", irq_desc[i].name);
-
-                if (action) {
-                        seq_printf(p, "  %s", action->name);
-                        while ((action = action->next) != NULL)
-                                seq_printf(p, ", %s", action->name);
-                }
-                seq_putc(p, '\n');
-skip:
-                spin_unlock_irqrestore(&irq_desc[i].lock, flags);
-        } else if (i == NR_IRQS) {
-                seq_printf(p, "NMI: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
-                seq_printf(p, "  Non-maskable interrupts\n");
-                seq_printf(p, "LOC: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
-                seq_printf(p, "  Local timer interrupts\n");
-#ifdef CONFIG_SMP
-                seq_printf(p, "RES: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->irq_resched_count);
-                seq_printf(p, "  Rescheduling interrupts\n");
-                seq_printf(p, "CAL: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
-                seq_printf(p, "  function call interrupts\n");
-                seq_printf(p, "TLB: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);
-                seq_printf(p, "  TLB shootdowns\n");
-#endif
-#ifdef CONFIG_X86_MCE
-                seq_printf(p, "TRM: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->irq_thermal_count);
-                seq_printf(p, "  Thermal event interrupts\n");
-                seq_printf(p, "THR: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->irq_threshold_count);
-                seq_printf(p, "  Threshold APIC interrupts\n");
-#endif
-                seq_printf(p, "SPU: ");
-                for_each_online_cpu(j)
-                        seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
-                seq_printf(p, "  Spurious interrupts\n");
-                seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
-        }
-        return 0;
-}
-
-/*
- * /proc/stat helpers
- */
-u64 arch_irq_stat_cpu(unsigned int cpu)
-{
-        u64 sum = cpu_pda(cpu)->__nmi_count;
-
-        sum += cpu_pda(cpu)->apic_timer_irqs;
-#ifdef CONFIG_SMP
-        sum += cpu_pda(cpu)->irq_resched_count;
-        sum += cpu_pda(cpu)->irq_call_count;
-        sum += cpu_pda(cpu)->irq_tlb_count;
-#endif
-#ifdef CONFIG_X86_MCE
-        sum += cpu_pda(cpu)->irq_thermal_count;
-        sum += cpu_pda(cpu)->irq_threshold_count;
-#endif
-        sum += cpu_pda(cpu)->irq_spurious_count;
-        return sum;
-}
-
-u64 arch_irq_stat(void)
-{
-        return atomic_read(&irq_err_count);
-}
-
-/*
  * do_IRQ handles all normal device IRQ's (the special
  * SMP cross-CPU interrupts have their own specific
  * handlers).
@@ -188,6 +50,7 @@ u64 arch_irq_stat(void)
 asmlinkage unsigned int do_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;
@@ -201,8 +64,9 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
         stack_overflow_check(regs);
 #endif
 
-        if (likely(irq < NR_IRQS))
-                generic_handle_irq(irq);
+        desc = irq_to_desc(irq);
+        if (likely(desc))
+                generic_handle_irq_desc(irq, desc);
         else {
                 if (!disable_apic)
                         ack_APIC_irq();
@@ -223,8 +87,9 @@ void fixup_irqs(cpumask_t map)
 {
         unsigned int irq;
         static int warned;
+        struct irq_desc *desc;
 
-        for (irq = 0; irq < NR_IRQS; irq++) {
+        for_each_irq_desc(irq, desc) {
                 cpumask_t mask;
                 int break_affinity = 0;
                 int set_affinity = 1;
@@ -233,32 +98,32 @@ void fixup_irqs(cpumask_t map)
                         continue;
 
                 /* interrupt's are disabled at this point */
-                spin_lock(&irq_desc[irq].lock);
+                spin_lock(&desc->lock);
 
                 if (!irq_has_action(irq) ||
-                    cpus_equal(irq_desc[irq].affinity, map)) {
-                        spin_unlock(&irq_desc[irq].lock);
+                    cpus_equal(desc->affinity, map)) {
+                        spin_unlock(&desc->lock);
                         continue;
                 }
 
-                cpus_and(mask, irq_desc[irq].affinity, map);
+                cpus_and(mask, desc->affinity, map);
                 if (cpus_empty(mask)) {
                         break_affinity = 1;
                         mask = map;
                 }
 
-                if (irq_desc[irq].chip->mask)
-                        irq_desc[irq].chip->mask(irq);
+                if (desc->chip->mask)
+                        desc->chip->mask(irq);
 
-                if (irq_desc[irq].chip->set_affinity)
-                        irq_desc[irq].chip->set_affinity(irq, mask);
+                if (desc->chip->set_affinity)
+                        desc->chip->set_affinity(irq, mask);
                 else if (!(warned++))
                         set_affinity = 0;
 
-                if (irq_desc[irq].chip->unmask)
-                        irq_desc[irq].chip->unmask(irq);
+                if (desc->chip->unmask)
+                        desc->chip->unmask(irq);
 
-                spin_unlock(&irq_desc[irq].lock);
+                spin_unlock(&desc->lock);
 
                 if (break_affinity && set_affinity)
                         printk("Broke affinity for irq %i\n", irq);