x86: hardirq: introduce inc_irq_stat()

Impact: cleanup

Introduce inc_irq_stat() macro and unify irq_stat accounting code.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/include/asm/hardirq_32.h

@@ -22,6 +22,8 @@ DECLARE_PER_CPU(irq_cpustat_t, irq_stat);
 #define __ARCH_IRQ_STAT
 #define __IRQ_STAT(cpu, member) (per_cpu(irq_stat, cpu).member)
 
+#define inc_irq_stat(member)	(__get_cpu_var(irq_stat).member++)
+
 void ack_bad_irq(unsigned int irq);
 #include <linux/irq_cpustat.h>
 

arch/x86/include/asm/hardirq_64.h

@@ -11,6 +11,8 @@
 
 #define __ARCH_IRQ_STAT 1
 
+#define inc_irq_stat(member)	add_pda(member, 1)
+
 #define local_softirq_pending() read_pda(__softirq_pending)
 
 #define __ARCH_SET_SOFTIRQ_PENDING 1

arch/x86/kernel/apic.c

@@ -783,11 +783,7 @@ static void local_apic_timer_interrupt(void)
 	/*
 	 * the NMI deadlock-detector uses this.
 	 */
-#ifdef CONFIG_X86_64
-	add_pda(apic_timer_irqs, 1);
-#else
-	per_cpu(irq_stat, cpu).apic_timer_irqs++;
-#endif
+	inc_irq_stat(apic_timer_irqs);
 
 	evt->event_handler(evt);
 }
@@ -1695,14 +1691,11 @@ void smp_spurious_interrupt(struct pt_regs *regs)
 	if (v & (1 << (SPURIOUS_APIC_VECTOR & 0x1f)))
 		ack_APIC_irq();
 
-#ifdef CONFIG_X86_64
-	add_pda(irq_spurious_count, 1);
-#else
+	inc_irq_stat(irq_spurious_count);
+
 	/* see sw-dev-man vol 3, chapter 7.4.13.5 */
 	printk(KERN_INFO "spurious APIC interrupt on CPU#%d, "
 	       "should never happen.\n", smp_processor_id());
-	__get_cpu_var(irq_stat).irq_spurious_count++;
-#endif
 	irq_exit();
 }
 

arch/x86/kernel/smp.c

@@ -178,11 +178,7 @@ static void native_smp_send_stop(void)
 void smp_reschedule_interrupt(struct pt_regs *regs)
 {
 	ack_APIC_irq();
-#ifdef CONFIG_X86_32
-	__get_cpu_var(irq_stat).irq_resched_count++;
-#else
-	add_pda(irq_resched_count, 1);
-#endif
+	inc_irq_stat(irq_resched_count);
 }
 
 void smp_call_function_interrupt(struct pt_regs *regs)
@@ -190,11 +186,7 @@ void smp_call_function_interrupt(struct pt_regs *regs)
 	ack_APIC_irq();
 	irq_enter();
 	generic_smp_call_function_interrupt();
-#ifdef CONFIG_X86_32
-	__get_cpu_var(irq_stat).irq_call_count++;
-#else
-	add_pda(irq_call_count, 1);
-#endif
+	inc_irq_stat(irq_call_count);
 	irq_exit();
 }
 
@@ -203,11 +195,7 @@ void smp_call_function_single_interrupt(struct pt_regs *regs)
 	ack_APIC_irq();
 	irq_enter();
 	generic_smp_call_function_single_interrupt();
-#ifdef CONFIG_X86_32
-	__get_cpu_var(irq_stat).irq_call_count++;
-#else
-	add_pda(irq_call_count, 1);
-#endif
+	inc_irq_stat(irq_call_count);
 	irq_exit();
 }
 

arch/x86/kernel/traps.c

@@ -481,11 +481,7 @@ do_nmi(struct pt_regs *regs, long error_code)
 {
 	nmi_enter();
 
-#ifdef CONFIG_X86_32
-	{ int cpu; cpu = smp_processor_id(); ++nmi_count(cpu); }
-#else
-	add_pda(__nmi_count, 1);
-#endif
+	inc_irq_stat(__nmi_count);
 
 	if (!ignore_nmis)
 		default_do_nmi(regs);