6546327ad1
enable/disable_hlt() does not need to be exported and can be killed on architectures which do not use it at all. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Magnus Damm <magnus.damm@gmail.com> Link: http://lkml.kernel.org/r/20130321215233.377959540@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
/*
|
|
* linux/arch/cris/kernel/process.c
|
|
*
|
|
* Copyright (C) 1995 Linus Torvalds
|
|
* Copyright (C) 2000-2002 Axis Communications AB
|
|
*
|
|
* Authors: Bjorn Wesen (bjornw@axis.com)
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This file handles the architecture-dependent parts of process handling..
|
|
*/
|
|
|
|
#include <linux/atomic.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/irq.h>
|
|
#include <linux/module.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/init_task.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/user.h>
|
|
#include <linux/elfcore.h>
|
|
#include <linux/mqueue.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/rcupdate.h>
|
|
|
|
//#define DEBUG
|
|
|
|
extern void default_idle(void);
|
|
|
|
void (*pm_power_off)(void);
|
|
EXPORT_SYMBOL(pm_power_off);
|
|
|
|
/*
|
|
* The idle thread. There's no useful work to be
|
|
* done, so just try to conserve power and have a
|
|
* low exit latency (ie sit in a loop waiting for
|
|
* somebody to say that they'd like to reschedule)
|
|
*/
|
|
|
|
void cpu_idle (void)
|
|
{
|
|
/* endless idle loop with no priority at all */
|
|
while (1) {
|
|
rcu_idle_enter();
|
|
while (!need_resched()) {
|
|
/*
|
|
* Mark this as an RCU critical section so that
|
|
* synchronize_kernel() in the unload path waits
|
|
* for our completion.
|
|
*/
|
|
default_idle();
|
|
}
|
|
rcu_idle_exit();
|
|
schedule_preempt_disabled();
|
|
}
|
|
}
|
|
|
|
void hard_reset_now (void);
|
|
|
|
void machine_restart(char *cmd)
|
|
{
|
|
hard_reset_now();
|
|
}
|
|
|
|
/*
|
|
* Similar to machine_power_off, but don't shut off power. Add code
|
|
* here to freeze the system for e.g. post-mortem debug purpose when
|
|
* possible. This halt has nothing to do with the idle halt.
|
|
*/
|
|
|
|
void machine_halt(void)
|
|
{
|
|
}
|
|
|
|
/* If or when software power-off is implemented, add code here. */
|
|
|
|
void machine_power_off(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* When a process does an "exec", machine state like FPU and debug
|
|
* registers need to be reset. This is a hook function for that.
|
|
* Currently we don't have any such state to reset, so this is empty.
|
|
*/
|
|
|
|
void flush_thread(void)
|
|
{
|
|
}
|
|
|
|
/* Fill in the fpu structure for a core dump. */
|
|
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
|
|
{
|
|
return 0;
|
|
}
|