NAMEidle - make process 0 idle
SYNOPSIS#include <unistd.h> int idle(void);
DESCRIPTIONidle() 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 VALUEidle() never returns for process 0, and always returns -1 for a user process.
ERRORSEPERM Always, for a user process.
VERSIONSSince 2.3.13 this system call does not exist anymore.
CONFORMING TOThis function is Linux-specific, and should not be used in programs intended to be portable.
COLOPHONThis 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 //www.kernel.org/doc/man-pages/. IDLE(2)