x86: merge smp_send_reschedule

function definition is moved to common header, x86_64 version is now called
native_smp_send_reschedule

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/smp_64.c

@@ -290,8 +290,9 @@ void flush_tlb_all(void)
  * anything. Worst case is that we lose a reschedule ...
  */
 
-void smp_send_reschedule(int cpu)
+static void native_smp_send_reschedule(int cpu)
 {
+	WARN_ON(cpu_is_offline(cpu));
 	send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
 }
 
@@ -528,5 +529,7 @@ asmlinkage void smp_call_function_interrupt(void)
 	}
 }
 
-struct smp_ops smp_ops;
+struct smp_ops smp_ops = {
+	.smp_send_reschedule = native_smp_send_reschedule,
+};
 EXPORT_SYMBOL_GPL(smp_ops);

include/asm-x86/smp.h

@@ -23,6 +23,11 @@ struct smp_ops {
 
 #ifdef CONFIG_SMP
 extern struct smp_ops smp_ops;
+
+static inline void smp_send_reschedule(int cpu)
+{
+	smp_ops.smp_send_reschedule(cpu);
+}
 #endif
 
 #ifdef CONFIG_X86_32

include/asm-x86/smp_32.h

@@ -60,10 +60,6 @@ static inline void smp_send_stop(void)
 {
 	smp_ops.smp_send_stop();
 }
-static inline void smp_send_reschedule(int cpu)
-{
-	smp_ops.smp_send_reschedule(cpu);
-}
 static inline int smp_call_function_mask(cpumask_t mask,
 					 void (*func) (void *info), void *info,
 					 int wait)

include/asm-x86/smp_64.h

@@ -65,8 +65,6 @@ static inline int num_booting_cpus(void)
 	return cpus_weight(cpu_callout_map);
 }
 
-extern void smp_send_reschedule(int cpu);
-
 #else /* CONFIG_SMP */
 
 extern unsigned int boot_cpu_id;