smp: Use smp_call_func_t in on_each_cpu()

Use smp_call_func_t instead of the open coded function pointer argument.

Signed-off-by: Kaitao Cheng <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Sebastian Andrzej Siewior <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

Author: chengkaitao

kernel/smp.c

@@ -620,7 +620,7 @@ void __init smp_init(void)
  * early_boot_irqs_disabled is set.  Use local_irq_save/restore() instead
  * of local_irq_disable/enable().
  */
-void on_each_cpu(void (*func) (void *info), void *info, int wait)
+void on_each_cpu(smp_call_func_t func, void *info, int wait)
 {
 	unsigned long flags;