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m32r idle: delete pm_idle, and other dead idle code 

All paths on m32r lead to cpu_relax().
So delete the dead code and simply call cpu_relax() directly.

Signed-off-by: Len Brown <len.brown@intel.com>
Cc: linux-m32r@ml.linux-m32r.org
This commit is contained in:
Len Brown 2013-02-09 22:42:39 -05:00
parent 3e7fc708eb
commit 1d8225661e
1 changed files with 2 additions and 49 deletions
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51
arch/m32r/kernel/process.c
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@ -44,35 +44,9 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return tsk->thread.lr;
}
/*
* Powermanagement idle function, if any..
*/
static void (*pm_idle)(void) = NULL;
void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
/*
* We use this is we don't have any better
* idle routine..
*/
static void default_idle(void)
{
/* M32R_FIXME: Please use "cpu_sleep" mode. */
cpu_relax();
}
/*
* On SMP it's slightly faster (but much more power-consuming!)
* to poll the ->work.need_resched flag instead of waiting for the
* cross-CPU IPI to arrive. Use this option with caution.
*/
static void poll_idle (void)
{
/* M32R_FIXME */
cpu_relax();
}
/*
* The idle thread. There's no useful work to be
* done, so just try to conserve power and have a
@ -84,14 +58,8 @@ void cpu_idle (void)
/* endless idle loop with no priority at all */
while (1) {
rcu_idle_enter();
while (!need_resched()) {
void (*idle)(void) = pm_idle;
if (!idle)
idle = default_idle;
idle();
}
while (!need_resched())
cpu_relax();
rcu_idle_exit();
schedule_preempt_disabled();
}
@ -120,21 +88,6 @@ void machine_power_off(void)
/* M32R_FIXME */
}
static int __init idle_setup (char *str)
{
if (!strncmp(str, "poll", 4)) {
printk("using poll in idle threads.\n");
pm_idle = poll_idle;
} else if (!strncmp(str, "sleep", 4)) {
printk("using sleep in idle threads.\n");
pm_idle = default_idle;
}
return 1;
}
__setup("idle=", idle_setup);
void show_regs(struct pt_regs * regs)
{
printk("\n");