Compile handle_percpu_irq even for uniprocessor kernels

Compiling handle_percpu_irq only on uniprocessor generates an artificial
special case so a typical use like:

  set_irq_chip_and_handler(irq, &some_irq_type, handle_percpu_irq);

needs to be conditionally compiled only on SMP systems as well and an
alternative UP construct is usually needed - for no good reason.

This fixes uniprocessor configurations for some MIPS SMP systems.

Signed-off-by: Ralf Baechle <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: ralfbaechle

kernel/irq/chip.c

@@ -503,7 +503,6 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
 	spin_unlock(&desc->lock);
 }
 
-#ifdef CONFIG_SMP
 /**
  *	handle_percpu_IRQ - Per CPU local irq handler
  *	@irq:	the interrupt number
@@ -529,8 +528,6 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
 		desc->chip->eoi(irq);
 }
 
-#endif /* CONFIG_SMP */
-
 void
 __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
 		  const char *name)