idle

IDLE(2)                     Linux Programmer's Manual                    IDLE(2)



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)