idle - make process 0 idle
idle() is an internal system call used during bootstrap. It marks the processs 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.
idle() never returns for process 0, and always returns -1 for a user process.
EPERM Always, for a user process.
Since 2.3.13 this system call does not exist anymore.
This function is Linux-specific, and should not be used in programs intended to be portable.
This page is part of release 3.44 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/.