NAME

       idle - make process 0 idle

SYNOPSIS

       #include <unistd.h>

       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.

VERSIONS

       Since Linux 2.3.13, this system call does not exist anymore.

CONFORMING TO

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

COLOPHON

       This page is part of release 5.10 of  the  Linux  man-pages  project.   A  description  of  the  project,
       information   about   reporting   bugs,   and   the  latest  version  of  this  page,  can  be  found  at
       https://www.kernel.org/doc/man-pages/.

Linux                                              2012-12-31                                            IDLE(2)