idle - make process 0 idle
#include <unistd.h> int idle(void);
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 super-user permission, will receive EPERM.
idle(2) never returns for process 0, and always returns -1 for a user process.
This function is Linux-specific, and should not be used in programs intended to be portable.
Since 2.3.13 this system call does not exist anymore.
2 pages link to idle(2):
