idle(2) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | HISTORY | COLOPHON

idle(2)                    System Calls Manual                   idle(2)

NAME         top

       idle - make process 0 idle

SYNOPSIS         top

       #include <unistd.h>

       [[deprecated]] int idle(void);

DESCRIPTION         top

       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         top

       idle() never returns for process 0, and always returns -1 for a
       user process.

ERRORS         top

       EPERM  Always, for a user process.

STANDARDS         top

       Linux.

HISTORY         top

       Removed in Linux 2.3.13.

COLOPHON         top

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Linux man-pages 6.9.1          2024-05-02                        idle(2)

Pages that refer to this page: syscalls(2)