#if CONFIG_KERNEL
#include <config_kern.h>
- #include <hw/switch.h>
+ #if CONFIG_KERN_PREEMPTIVE
+ #include <hw/switch.h>
+ #endif
#if CONFIG_KERN_SIGNALS
#include <kern/signal.h> /* sig_wait(), sig_check() */
#include <kern/proc.h> /* proc_current() */