[patch 08/41] x86/apic: Use this_cpu_ptr in local_timer_interrupt

[Thomas Gleixner <tglx@linutronix.de>]

[-- Attachment #1: x86-apic--Use-this_cpu_ptr-in-local_timer_interrupt.patch --]
[-- Type: text/plain, Size: 1003 bytes --]

Accessing the per cpu data via per_cpu(, smp_processor_id()) is
pointless. Use this_cpu_ptr() instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/kernel/apic/apic.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -990,8 +990,7 @@ void setup_secondary_APIC_clock(void)
  */
 static void local_apic_timer_interrupt(void)
 {
-	int cpu = smp_processor_id();
-	struct clock_event_device *evt = &per_cpu(lapic_events, cpu);
+	struct clock_event_device *evt = this_cpu_ptr(&lapic_events);
 
 	/*
 	 * Normally we should not be here till LAPIC has been initialized but
@@ -1005,7 +1004,8 @@ static void local_apic_timer_interrupt(v
 	 * spurious.
 	 */
 	if (!evt->event_handler) {
-		pr_warning("Spurious LAPIC timer interrupt on cpu %d\n", cpu);
+		pr_warning("Spurious LAPIC timer interrupt on cpu %d\n",
+			   smp_processor_id());
 		/* Switch it off */
 		lapic_timer_shutdown(evt);
 		return;