NAME

       idle - make process 0 idle

SYNOPSIS

       #include <unistd.h>

       [[deprecated]] int 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 process with superuser 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.

STANDARDS

       Linux.

HISTORY

       Removed in Linux 2.3.13.