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 3.14 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/.
