2 * Idle daemon for PowerPC. Idle daemon will handle any action
3 * that needs to be taken when the system becomes idle.
5 * Written by Cort Dougan (cort@cs.nmt.edu). Subsequently hacked
6 * on by Tom Rini, Armin Kuster, Paul Mackerras and others.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
13 #include <linux/config.h>
14 #include <linux/errno.h>
15 #include <linux/sched.h>
16 #include <linux/kernel.h>
18 #include <linux/smp.h>
19 #include <linux/smp_lock.h>
20 #include <linux/stddef.h>
21 #include <linux/unistd.h>
22 #include <linux/ptrace.h>
23 #include <linux/slab.h>
25 #include <asm/pgtable.h>
26 #include <asm/uaccess.h>
27 #include <asm/system.h>
30 #include <asm/cache.h>
31 #include <asm/cputable.h>
32 #include <asm/machdep.h>
34 void default_idle(void)
36 void (*powersave)(void);
38 powersave = ppc_md.power_save;
40 if (!need_resched()) {
41 if (powersave != NULL)
45 set_thread_flag(TIF_POLLING_NRFLAG);
46 while (!need_resched())
48 clear_thread_flag(TIF_POLLING_NRFLAG);
57 * The body of the idle task.
62 if (ppc_md.idle != NULL)