x86: unify show_interrupts() and proc helpers

show_interrupts() and proc helpers are basically the same for
32 and 64 bit. Move them to a shared source file.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

4 files changed, 167 insertions, 279 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index cb6ade4..d7e5a58 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -23,7 +23,7 @@ CFLAGS_hpet.o		:= $(nostackp)
 CFLAGS_tsc.o		:= $(nostackp)
 
 obj-y			:= process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
-obj-y			+= traps.o irq_$(BITS).o dumpstack_$(BITS).o
+obj-y			+= traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
 obj-y			+= time_$(BITS).o ioport.o ldt.o
 obj-y			+= setup.o i8259.o irqinit_$(BITS).o setup_percpu.o
 obj-$(CONFIG_X86_VISWS)	+= visws_quirks.o
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
new file mode 100644
index 0000000..3b91284
--- /dev/null
+++ b/arch/x86/kernel/irq.c
@@ -0,0 +1,166 @@
+/*
+ * Common interrupt code for 32 and 64 bit
+ */
+#include <linux/cpu.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/seq_file.h>
+
+#include <asm/apic.h>
+#include <asm/io_apic.h>
+#include <asm/smp.h>
+
+atomic_t irq_err_count;
+
+#ifdef CONFIG_X86_32
+# define irq_stats(x)		(&per_cpu(irq_stat,x))
+#else
+# define irq_stats(x)		cpu_pda(x)
+#endif
+/*
+ * /proc/interrupts printing:
+ */
+static int show_other_interrupts(struct seq_file *p)
+{
+	int j;
+
+	seq_printf(p, "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: ");
+	for_each_online_cpu(j)
+		seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs);
+	seq_printf(p, "  Local timer interrupts\n");
+#endif
+#ifdef CONFIG_SMP
+	seq_printf(p, "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: ");
+	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: ");
+	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: ");
+	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: ");
+	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));
+#if defined(CONFIG_X86_IO_APIC)
+	seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
+#endif
+	return 0;
+}
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+	unsigned long flags, any_count = 0;
+	int i = *(loff_t *) v, j;
+	struct irqaction *action;
+	struct irq_desc *desc;
+
+	if (i > nr_irqs)
+		return 0;
+
+	if (i == nr_irqs)
+		return show_other_interrupts(p);
+
+	/* print header */
+	if (i == 0) {
+		seq_printf(p, "           ");
+		for_each_online_cpu(j)
+			seq_printf(p, "CPU%-8d",j);
+		seq_putc(p, '\n');
+	}
+
+	desc = irq_to_desc(i);
+	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
+	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);
+
+	if (action) {
+		seq_printf(p, "  %s", action->name);
+		while ((action = action->next) != NULL)
+			seq_printf(p, ", %s", action->name);
+	}
+
+	seq_putc(p, '\n');
+out:
+	spin_unlock_irqrestore(&desc->lock, flags);
+	return 0;
+}
+
+/*
+ * /proc/stat helpers
+ */
+u64 arch_irq_stat_cpu(unsigned int cpu)
+{
+	u64 sum = irq_stats(cpu)->__nmi_count;
+
+#ifdef CONFIG_X86_LOCAL_APIC
+	sum += irq_stats(cpu)->apic_timer_irqs;
+#endif
+#ifdef CONFIG_SMP
+	sum += irq_stats(cpu)->irq_resched_count;
+	sum += irq_stats(cpu)->irq_call_count;
+	sum += irq_stats(cpu)->irq_tlb_count;
+#endif
+#ifdef CONFIG_X86_MCE
+	sum += irq_stats(cpu)->irq_thermal_count;
+# 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;
+}
+
+u64 arch_irq_stat(void)
+{
+	u64 sum = atomic_read(&irq_err_count);
+
+#ifdef CONFIG_X86_IO_APIC
+	sum += atomic_read(&irq_mis_count);
+#endif
+	return sum;
+}
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index 8d52576..6d9bf39 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -253,152 +253,6 @@ unsigned int do_IRQ(struct pt_regs *regs)
 	return 1;
 }
 
-/*
- * Interrupt statistics:
- */
-
-atomic_t irq_err_count;
-
-/*
- * /proc/interrupts printing:
- */
-
-static int show_other_interrupts(struct seq_file *p)
-{
-	int j;
-
-	seq_printf(p, "NMI: ");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", nmi_count(j));
-	seq_printf(p, "  Non-maskable interrupts\n");
-#ifdef CONFIG_X86_LOCAL_APIC
-	seq_printf(p, "LOC: ");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", per_cpu(irq_stat,j).apic_timer_irqs);
-	seq_printf(p, "  Local timer interrupts\n");
-#endif
-#ifdef CONFIG_SMP
-	seq_printf(p, "RES: ");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_resched_count);
-	seq_printf(p, "  Rescheduling interrupts\n");
-	seq_printf(p, "CAL: ");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_call_count);
-	seq_printf(p, "  Function call interrupts\n");
-	seq_printf(p, "TLB: ");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", per_cpu(irq_stat,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 ", per_cpu(irq_stat,j).irq_thermal_count);
-	seq_printf(p, "  Thermal event interrupts\n");
-#endif
-#ifdef CONFIG_X86_LOCAL_APIC
-	seq_printf(p, "SPU: ");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_spurious_count);
-	seq_printf(p, "  Spurious interrupts\n");
-#endif
-	seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
-#if defined(CONFIG_X86_IO_APIC)
-	seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
-#endif
-	return 0;
-}
-
-int show_interrupts(struct seq_file *p, void *v)
-{
-	unsigned long flags, any_count = 0;
-	int i = *(loff_t *) v, j;
-	struct irqaction *action;
-	struct irq_desc *desc;
-
-	if (i > nr_irqs)
-		return 0;
-
-	if (i == nr_irqs)
-		return show_other_interrupts(p);
-
-	/* print header */
-	if (i == 0) {
-		seq_printf(p, "           ");
-		for_each_online_cpu(j)
-			seq_printf(p, "CPU%-8d",j);
-		seq_putc(p, '\n');
-	}
-
-	desc = irq_to_desc(i);
-	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
-	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);
-
-	if (action) {
-		seq_printf(p, "  %s", action->name);
-		while ((action = action->next) != NULL)
-			seq_printf(p, ", %s", action->name);
-	}
-
-	seq_putc(p, '\n');
-out:
-	spin_unlock_irqrestore(&desc->lock, flags);
-	return 0;
-}
-
-/*
- * /proc/stat helpers
- */
-u64 arch_irq_stat_cpu(unsigned int cpu)
-{
-	u64 sum = nmi_count(cpu);
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	sum += per_cpu(irq_stat, cpu).apic_timer_irqs;
-#endif
-#ifdef CONFIG_SMP
-	sum += per_cpu(irq_stat, cpu).irq_resched_count;
-	sum += per_cpu(irq_stat, cpu).irq_call_count;
-	sum += per_cpu(irq_stat, cpu).irq_tlb_count;
-#endif
-#ifdef CONFIG_X86_MCE
-	sum += per_cpu(irq_stat, cpu).irq_thermal_count;
-#endif
-#ifdef CONFIG_X86_LOCAL_APIC
-	sum += per_cpu(irq_stat, cpu).irq_spurious_count;
-#endif
-	return sum;
-}
-
-u64 arch_irq_stat(void)
-{
-	u64 sum = atomic_read(&irq_err_count);
-
-#ifdef CONFIG_X86_IO_APIC
-	sum += atomic_read(&irq_mis_count);
-#endif
-	return sum;
-}
-
 #ifdef CONFIG_HOTPLUG_CPU
 #include <mach_apic.h>
 
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 4f37429..39ef7fe 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -18,8 +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.
@@ -65,136 +63,6 @@ static inline void stack_overflow_check(struct pt_regs *regs)
 #endif
 
 /*
- * Generic, controller-independent functions:
- */
-
-static int show_other_interrupts(struct seq_file *p)
-{
-	int j;
-
-	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;
-}
-
-int show_interrupts(struct seq_file *p, void *v)
-{
-	unsigned long flags, any_count = 0;
-	int i = *(loff_t *) v, j;
-	struct irqaction *action;
-	struct irq_desc *desc;
-
-	if (i > nr_irqs)
-		return 0;
-
-	if (i == nr_irqs)
-		return show_other_interrupts(p);
-
-	/* print header */
-	if (i == 0) {
-		seq_printf(p, "           ");
-		for_each_online_cpu(j)
-			seq_printf(p, "CPU%-8d",j);
-		seq_putc(p, '\n');
-	}
-
-	desc = irq_to_desc(i);
-	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
-	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);
-
-	if (action) {
-		seq_printf(p, "  %s", action->name);
-		while ((action = action->next) != NULL)
-			seq_printf(p, ", %s", action->name);
-	}
-
-	seq_putc(p, '\n');
-out:
-	spin_unlock_irqrestore(&desc->lock, flags);
-	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).