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-rw-r--r--arch/ia64/kernel/process.c90
1 files changed, 18 insertions, 72 deletions
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 6f7dc8b7b35c..55d4ba47a907 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -96,21 +96,13 @@ show_stack (struct task_struct *task, unsigned long *sp)
}
void
-dump_stack (void)
-{
- show_stack(NULL, NULL);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-void
show_regs (struct pt_regs *regs)
{
unsigned long ip = regs->cr_iip + ia64_psr(regs)->ri;
print_modules();
- printk("\nPid: %d, CPU %d, comm: %20s\n", task_pid_nr(current),
- smp_processor_id(), current->comm);
+ printk("\n");
+ show_regs_print_info(KERN_DEFAULT);
printk("psr : %016lx ifs : %016lx ip : [<%016lx>] %s (%s)\n",
regs->cr_ipsr, regs->cr_ifs, ip, print_tainted(),
init_utsname()->release);
@@ -209,41 +201,13 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
local_irq_disable(); /* force interrupt disable */
}
-static int pal_halt = 1;
-static int can_do_pal_halt = 1;
-
static int __init nohalt_setup(char * str)
{
- pal_halt = can_do_pal_halt = 0;
+ cpu_idle_poll_ctrl(true);
return 1;
}
__setup("nohalt", nohalt_setup);
-void
-update_pal_halt_status(int status)
-{
- can_do_pal_halt = pal_halt && status;
-}
-
-/*
- * We use this if we don't have any better idle routine..
- */
-void
-default_idle (void)
-{
- local_irq_enable();
- while (!need_resched()) {
- if (can_do_pal_halt) {
- local_irq_disable();
- if (!need_resched()) {
- safe_halt();
- }
- local_irq_enable();
- } else
- cpu_relax();
- }
-}
-
#ifdef CONFIG_HOTPLUG_CPU
/* We don't actually take CPU down, just spin without interrupts. */
static inline void play_dead(void)
@@ -270,47 +234,29 @@ static inline void play_dead(void)
}
#endif /* CONFIG_HOTPLUG_CPU */
-void __attribute__((noreturn))
-cpu_idle (void)
+void arch_cpu_idle_dead(void)
+{
+ play_dead();
+}
+
+void arch_cpu_idle(void)
{
void (*mark_idle)(int) = ia64_mark_idle;
- int cpu = smp_processor_id();
-
- /* endless idle loop with no priority at all */
- while (1) {
- rcu_idle_enter();
- if (can_do_pal_halt) {
- current_thread_info()->status &= ~TS_POLLING;
- /*
- * TS_POLLING-cleared state must be visible before we
- * test NEED_RESCHED:
- */
- smp_mb();
- } else {
- current_thread_info()->status |= TS_POLLING;
- }
- if (!need_resched()) {
#ifdef CONFIG_SMP
- min_xtp();
+ min_xtp();
#endif
- rmb();
- if (mark_idle)
- (*mark_idle)(1);
+ rmb();
+ if (mark_idle)
+ (*mark_idle)(1);
- default_idle();
- if (mark_idle)
- (*mark_idle)(0);
+ safe_halt();
+
+ if (mark_idle)
+ (*mark_idle)(0);
#ifdef CONFIG_SMP
- normal_xtp();
+ normal_xtp();
#endif
- }
- rcu_idle_exit();
- schedule_preempt_disabled();
- check_pgt_cache();
- if (cpu_is_offline(cpu))
- play_dead();
- }
}
void
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