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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 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 3.27 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.