s/#if/#ifdef/ for a few CONFIG_SMP tests in public headers

Headers touched: linux/interrupt.h, linux/sched.h, linux/timer.h

include/linux/interrupt.h

@@ -49,7 +49,7 @@ extern void free_irq(unsigned int, void *);
 /*
  * Temporary defines for UP kernels, until all code gets fixed.
  */
-#if !CONFIG_SMP
+#ifndef CONFIG_SMP
 # define cli()			local_irq_disable()
 # define sti()			local_irq_enable()
 # define save_flags(x)		local_save_flags(x)

include/linux/sched.h

@@ -467,7 +467,7 @@ do { if (atomic_dec_and_test(&(tsk)->usage)) __put_task_struct(tsk); } while(0)
 #define PF_KSWAPD	0x00040000	/* I am kswapd */
 #define PF_SWAPOFF	0x00080000	/* I am in swapoff */
 
-#if CONFIG_SMP
+#ifdef CONFIG_SMP
 extern void set_cpus_allowed(task_t *p, unsigned long new_mask);
 #else
 # define set_cpus_allowed(p, new_mask) do { } while (0)

include/linux/timer.h

@@ -65,7 +65,7 @@ extern void add_timer_on(struct timer_list *timer, int cpu);
 extern int del_timer(struct timer_list * timer);
 extern int mod_timer(struct timer_list *timer, unsigned long expires);
   
-#if CONFIG_SMP
+#ifdef CONFIG_SMP
   extern int del_timer_sync(struct timer_list * timer);
 #else
 # define del_timer_sync(t) del_timer(t)