NAME

     idle - make process 0 idle

SYNOPSIS

     #include <unistd.h>

     void idle(void);

DESCRIPTION

     idle is an internal system call used during  bootstrap.   It
     marks the process's pages as swappable, lowers its priority,
     and enters the main scheduling loop.  idle never returns.

     Only process 0 may call idle.  Any user process, even a pro-
     cess with super-user permission, will receive EPERM.

RETURN VALUE

     idle never returns for process 0, and always returns -1  for
     a user process.

ERRORS

     EPERM   Always, for a user process.

CONFORMING TO

     This function is Linux-specific, and should not be  used  in
     programs intended to be portable.