mips: Use generic idle loop
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>
Cc: Ralf Baechle <ralf@linux-mips.org>
Link: http://lkml.kernel.org/r/20130321215234.754954871@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 3be4405..cfc742d 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -41,44 +41,26 @@
#include <asm/inst.h>
#include <asm/stacktrace.h>
-/*
- * 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 __noreturn cpu_idle(void)
-{
- int cpu;
-
- /* CPU is going idle. */
- cpu = smp_processor_id();
-
- /* endless idle loop with no priority at all */
- while (1) {
- tick_nohz_idle_enter();
- rcu_idle_enter();
- while (!need_resched() && cpu_online(cpu)) {
-#ifdef CONFIG_MIPS_MT_SMTC
- extern void smtc_idle_loop_hook(void);
-
- smtc_idle_loop_hook();
-#endif
-
- if (cpu_wait) {
- /* Don't trace irqs off for idle */
- stop_critical_timings();
- (*cpu_wait)();
- start_critical_timings();
- }
- }
#ifdef CONFIG_HOTPLUG_CPU
- if (!cpu_online(cpu) && !cpu_isset(cpu, cpu_callin_map))
- play_dead();
+void arch_cpu_idle_dead(void)
+{
+ /* What the heck is this check doing ? */
+ if (!cpu_isset(smp_processor_id(), cpu_callin_map))
+ play_dead();
+}
#endif
- rcu_idle_exit();
- tick_nohz_idle_exit();
- schedule_preempt_disabled();
- }
+
+void arch_cpu_idle(void)
+{
+#ifdef CONFIG_MIPS_MT_SMTC
+ extern void smtc_idle_loop_hook(void);
+
+ smtc_idle_loop_hook();
+#endif
+ if (cpu_wait)
+ (*cpu_wait)();
+ else
+ local_irq_enable();
}
asmlinkage void ret_from_fork(void);