Merge branch 'linus' into perfcounters/core-v2

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

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 7c95c89..9c27543 100644 (file)
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -15,6 +15,9 @@
 
 atomic_t irq_err_count;
 
+/* Function pointer for generic interrupt vector handling */
+void (*generic_interrupt_extension)(void) = NULL;
+
 /*
  * 'what should we do if we get a hw irq event on an illegal vector'.
  * each architecture has to answer this themselves.
@@ -42,59 +45,64 @@ void ack_bad_irq(unsigned int irq)
 /*
  * /proc/interrupts printing:
  */
-static int show_other_interrupts(struct seq_file *p)
+static int show_other_interrupts(struct seq_file *p, int prec)
 {
        int j;
 
-       seq_printf(p, "NMI: ");
+       seq_printf(p, "%*s: ", prec, "NMI");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->__nmi_count);
        seq_printf(p, "  Non-maskable interrupts\n");
 #ifdef CONFIG_X86_LOCAL_APIC
-       seq_printf(p, "LOC: ");
+       seq_printf(p, "%*s: ", prec, "LOC");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs);
        seq_printf(p, "  Local timer interrupts\n");
+
+       seq_printf(p, "%*s: ", prec, "SPU");
+       for_each_online_cpu(j)
+               seq_printf(p, "%10u ", irq_stats(j)->irq_spurious_count);
+       seq_printf(p, "  Spurious interrupts\n");
        seq_printf(p, "CNT: ");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->apic_perf_irqs);
        seq_printf(p, "  Performance counter interrupts\n");
 #endif
+       if (generic_interrupt_extension) {
+               seq_printf(p, "PLT: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", irq_stats(j)->generic_irqs);
+               seq_printf(p, "  Platform interrupts\n");
+       }
 #ifdef CONFIG_SMP
-       seq_printf(p, "RES: ");
+       seq_printf(p, "%*s: ", prec, "RES");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
        seq_printf(p, "  Rescheduling interrupts\n");
-       seq_printf(p, "CAL: ");
+       seq_printf(p, "%*s: ", prec, "CAL");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
        seq_printf(p, "  Function call interrupts\n");
-       seq_printf(p, "TLB: ");
+       seq_printf(p, "%*s: ", prec, "TLB");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
        seq_printf(p, "  TLB shootdowns\n");
 #endif
 #ifdef CONFIG_X86_MCE
-       seq_printf(p, "TRM: ");
+       seq_printf(p, "%*s: ", prec, "TRM");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_thermal_count);
        seq_printf(p, "  Thermal event interrupts\n");
 # ifdef CONFIG_X86_64
-       seq_printf(p, "THR: ");
+       seq_printf(p, "%*s: ", prec, "THR");
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", irq_stats(j)->irq_threshold_count);
        seq_printf(p, "  Threshold APIC interrupts\n");
 # endif
 #endif
-#ifdef CONFIG_X86_LOCAL_APIC
-       seq_printf(p, "SPU: ");
-       for_each_online_cpu(j)
-               seq_printf(p, "%10u ", irq_stats(j)->irq_spurious_count);
-       seq_printf(p, "  Spurious interrupts\n");
-#endif
-       seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
+       seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
 #if defined(CONFIG_X86_IO_APIC)
-       seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
+       seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count));
 #endif
        return 0;
 }
@@ -102,19 +110,22 @@ static int show_other_interrupts(struct seq_file *p)
 int show_interrupts(struct seq_file *p, void *v)
 {
        unsigned long flags, any_count = 0;
-       int i = *(loff_t *) v, j;
+       int i = *(loff_t *) v, j, prec;
        struct irqaction *action;
        struct irq_desc *desc;
 
        if (i > nr_irqs)
                return 0;
 
+       for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec)
+               j *= 10;
+
        if (i == nr_irqs)
-               return show_other_interrupts(p);
+               return show_other_interrupts(p, prec);
 
        /* print header */
        if (i == 0) {
-               seq_printf(p, "           ");
+               seq_printf(p, "%*s", prec + 8, "");
                for_each_online_cpu(j)
                        seq_printf(p, "CPU%-8d", j);
                seq_putc(p, '\n');
@@ -125,23 +136,15 @@ int show_interrupts(struct seq_file *p, void *v)
                return 0;
 
        spin_lock_irqsave(&desc->lock, flags);
-#ifndef CONFIG_SMP
-       any_count = kstat_irqs(i);
-#else
        for_each_online_cpu(j)
                any_count |= kstat_irqs_cpu(i, j);
-#endif
        action = desc->action;
        if (!action && !any_count)
                goto out;
 
-       seq_printf(p, "%3d: ", i);
-#ifndef CONFIG_SMP
-       seq_printf(p, "%10u ", kstat_irqs(i));
-#else
+       seq_printf(p, "%*d: ", prec, i);
        for_each_online_cpu(j)
                seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
-#endif
        seq_printf(p, " %8s", desc->chip->name);
        seq_printf(p, "-%-8s", desc->name);
 
@@ -166,8 +169,11 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
 
 #ifdef CONFIG_X86_LOCAL_APIC
        sum += irq_stats(cpu)->apic_timer_irqs;
+       sum += irq_stats(cpu)->irq_spurious_count;
        sum += irq_stats(cpu)->apic_perf_irqs;
 #endif
+       if (generic_interrupt_extension)
+               sum += irq_stats(cpu)->generic_irqs;
 #ifdef CONFIG_SMP
        sum += irq_stats(cpu)->irq_resched_count;
        sum += irq_stats(cpu)->irq_call_count;
@@ -178,9 +184,6 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
 # ifdef CONFIG_X86_64
        sum += irq_stats(cpu)->irq_threshold_count;
 #endif
-#endif
-#ifdef CONFIG_X86_LOCAL_APIC
-       sum += irq_stats(cpu)->irq_spurious_count;
 #endif
        return sum;
 }
@@ -231,4 +234,27 @@ unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
        return 1;
 }
 
+/*
+ * Handler for GENERIC_INTERRUPT_VECTOR.
+ */
+void smp_generic_interrupt(struct pt_regs *regs)
+{
+       struct pt_regs *old_regs = set_irq_regs(regs);
+
+       ack_APIC_irq();
+
+       exit_idle();
+
+       irq_enter();
+
+       inc_irq_stat(generic_irqs);
+
+       if (generic_interrupt_extension)
+               generic_interrupt_extension();
+
+       irq_exit();
+
+       set_irq_regs(old_regs);
+}
+
 EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);