void cpu_idle(void)
{
set_thread_flag(TIF_POLLING_NRFLAG);
/* endless idle loop with no priority at all */
while (1) {
tick_nohz_idle_enter();
rcu_idle_enter();
while (!need_resched()) {
check_pgt_cache();
rmb();
clear_thread_flag(TIF_POLLING_NRFLAG);
local_irq_disable();
/* Don't trace irqs off for idle */
stop_critical_timings();
if (!need_resched() && powersave != NULL)
powersave();
start_critical_timings();
local_irq_enable();
set_thread_flag(TIF_POLLING_NRFLAG);
}
rcu_idle_exit();
tick_nohz_idle_exit();
preempt_enable_no_resched();
schedule();
preempt_disable();
}
}
void cpu_idle(void)
{
int spr_sr;
for (;;) {
// __PHX__ TODO: make an config option or something
#if 1
if (!(SPR_SR_TEE & (spr_sr = mfspr(SPR_SR)))) {
printk("idled: tick timer disabled, enabling...\n");
printk("idled: SR 0x%lx, ESR 0x%lx, EPCR 0x%lx, EEAR 0x%lx\n",
mfspr(SPR_SR), mfspr(SPR_ESR_BASE),
mfspr(SPR_EPCR_BASE), mfspr(SPR_EEAR_BASE));
mtspr(SPR_SR, spr_sr | SPR_SR_TEE);
// __PHX__ TODO: add trace
}
#endif
if (!need_resched()) {
if (powersave != NULL) {
powersave();
}
}
#if 0
if (need_resched())
schedule();
#else
schedule();
#endif
}
}
void default_idle(void)
{
void (*powersave)(void);
powersave = ppc_md.power_save;
if (!need_resched()) {
if (powersave != NULL)
powersave();
#ifdef CONFIG_SMP
else {
set_thread_flag(TIF_POLLING_NRFLAG);
while (!need_resched() &&
!cpu_is_offline(smp_processor_id()))
barrier();
clear_thread_flag(TIF_POLLING_NRFLAG);
}
#endif
}
}
void default_idle(void)
{
void (*powersave)(void);
powersave = ppc_md.power_save;
if (!need_resched()) {
if (powersave != NULL)
powersave();
#ifdef CONFIG_SMP
else {
set_thread_flag(TIF_POLLING_NRFLAG);
while (!need_resched())
barrier();
clear_thread_flag(TIF_POLLING_NRFLAG);
}
#endif
}
if (need_resched())
schedule();
}
/* Put the LCD in a powered-down state */
void Nokia1202::end()
{
powersave(true);
digitalWrite(_csPin, HIGH);
}
