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/.