| PREEMPT(9) | Kernel Developer's Manual | PREEMPT(9) | 
preempt, yield —
#include <sys/sched.h>
void
  
  preempt(void);
#include
    <sys/proc.h>
void
  
  yield(void);
preempt() function puts the current LWP back on the
  system run queue and performs an involuntary context switch. The
  yield() function is mostly same as
  preempt(), except that it performs a voluntary context
  switch.
These functions drop the kernel lock before switching and re-acquire it before returning.
| July 3, 2007 | NetBSD 9.4 |