1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * The idle loop for all SuperH platforms.
 4 *
 5 *  Copyright (C) 2002 - 2009  Paul Mundt
 6 */
 7#include <linux/module.h>
 8#include <linux/init.h>
 9#include <linux/mm.h>
10#include <linux/pm.h>
11#include <linux/tick.h>
12#include <linux/preempt.h>
13#include <linux/thread_info.h>
14#include <linux/irqflags.h>
15#include <linux/smp.h>
16#include <linux/atomic.h>
17#include <asm/pgalloc.h>
18#include <asm/smp.h>
19#include <asm/bl_bit.h>
20
21static void (*sh_idle)(void);
22
23void default_idle(void)
24{
25	set_bl_bit();
26	local_irq_enable();
27	/* Isn't this racy ? */
28	cpu_sleep();
29	clear_bl_bit();
30}
31
32void arch_cpu_idle_dead(void)
33{
34	play_dead();
35}
36
37void arch_cpu_idle(void)
38{
39	sh_idle();
40}
41
42void __init select_idle_routine(void)
43{
44	/*
45	 * If a platform has set its own idle routine, leave it alone.
46	 */
47	if (!sh_idle)
48		sh_idle = default_idle;
49}
50
51void stop_this_cpu(void *unused)
52{
53	local_irq_disable();
54	set_cpu_online(smp_processor_id(), false);
55
56	for (;;)
57		cpu_sleep();
58}

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * The idle loop for all SuperH platforms.
 4 *
 5 *  Copyright (C) 2002 - 2009  Paul Mundt
 6 */
 7#include <linux/module.h>
 8#include <linux/init.h>
 9#include <linux/mm.h>
10#include <linux/pm.h>
11#include <linux/tick.h>
12#include <linux/preempt.h>
13#include <linux/thread_info.h>
14#include <linux/irqflags.h>
15#include <linux/smp.h>
16#include <linux/atomic.h>
 
17#include <asm/smp.h>
18#include <asm/bl_bit.h>
19
20static void (*sh_idle)(void);
21
22void default_idle(void)
23{
24	set_bl_bit();
25	raw_local_irq_enable();
26	/* Isn't this racy ? */
27	cpu_sleep();
28	clear_bl_bit();
29}
30
31void arch_cpu_idle_dead(void)
32{
33	play_dead();
34}
35
36void arch_cpu_idle(void)
37{
38	sh_idle();
39}
40
41void __init select_idle_routine(void)
42{
43	/*
44	 * If a platform has set its own idle routine, leave it alone.
45	 */
46	if (!sh_idle)
47		sh_idle = default_idle;
48}
49
50void stop_this_cpu(void *unused)
51{
52	local_irq_disable();
53	set_cpu_online(smp_processor_id(), false);
54
55	for (;;)
56		cpu_sleep();
57}