5933f6d220
Update license to use SPDX-License-Identifier instead of verbose license text. Link: http://lkml.kernel.org/r/8736rccswn.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
59 lines
984 B
C
59 lines
984 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* The idle loop for all SuperH platforms.
|
|
*
|
|
* Copyright (C) 2002 - 2009 Paul Mundt
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/tick.h>
|
|
#include <linux/preempt.h>
|
|
#include <linux/thread_info.h>
|
|
#include <linux/irqflags.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/atomic.h>
|
|
#include <asm/pgalloc.h>
|
|
#include <asm/smp.h>
|
|
#include <asm/bl_bit.h>
|
|
|
|
static void (*sh_idle)(void);
|
|
|
|
void default_idle(void)
|
|
{
|
|
set_bl_bit();
|
|
local_irq_enable();
|
|
/* Isn't this racy ? */
|
|
cpu_sleep();
|
|
clear_bl_bit();
|
|
}
|
|
|
|
void arch_cpu_idle_dead(void)
|
|
{
|
|
play_dead();
|
|
}
|
|
|
|
void arch_cpu_idle(void)
|
|
{
|
|
sh_idle();
|
|
}
|
|
|
|
void __init select_idle_routine(void)
|
|
{
|
|
/*
|
|
* If a platform has set its own idle routine, leave it alone.
|
|
*/
|
|
if (!sh_idle)
|
|
sh_idle = default_idle;
|
|
}
|
|
|
|
void stop_this_cpu(void *unused)
|
|
{
|
|
local_irq_disable();
|
|
set_cpu_online(smp_processor_id(), false);
|
|
|
|
for (;;)
|
|
cpu_sleep();
|
|
}
|