sched / idle: Move the default idle call code to a separate function

Move the code under the "use_default" label in cpuidle_idle_call()
into a separate (new) function.

This just allows the subsequent changes to be more stratightforward.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index fefcb1f..ae7c0be 100644 (file)
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -67,6 +67,18 @@ void __weak arch_cpu_idle(void)
        local_irq_enable();
 }
 
+static void default_idle_call(void)
+{
+       /*
+        * We can't use the cpuidle framework, let's use the default idle
+        * routine.
+        */
+       if (current_clr_polling_and_test())
+               local_irq_enable();
+       else
+               arch_cpu_idle();
+}
+
 /**
  * cpuidle_idle_call - the main idle function
  *
@@ -105,8 +117,10 @@ static void cpuidle_idle_call(void)
         */
        rcu_idle_enter();
 
-       if (cpuidle_not_available(drv, dev))
-               goto use_default;
+       if (cpuidle_not_available(drv, dev)) {
+               default_idle_call();
+               goto exit_idle;
+       }
 
        /*
         * Suspend-to-idle ("freeze") is a system state in which all user space
@@ -134,8 +148,10 @@ static void cpuidle_idle_call(void)
                next_state = cpuidle_select(drv, dev);
        }
        /* Fall back to the default arch idle method on errors. */
-       if (next_state < 0)
-               goto use_default;
+       if (next_state < 0) {
+               default_idle_call();
+               goto exit_idle;
+       }
 
        /*
         * The idle task must be scheduled, it is pointless to
@@ -162,8 +178,10 @@ static void cpuidle_idle_call(void)
        /* The cpu is no longer idle or about to enter idle. */
        idle_set_state(this_rq(), NULL);
 
-       if (entered_state == -EBUSY)
-               goto use_default;
+       if (entered_state == -EBUSY) {
+               default_idle_call();
+               goto exit_idle;
+       }
 
        /*
         * Give the governor an opportunity to reflect on the outcome
@@ -182,19 +200,6 @@ exit_idle:
 
        rcu_idle_exit();
        start_critical_timings();
-       return;
-
-use_default:
-       /*
-        * We can't use the cpuidle framework, let's use the default
-        * idle routine.
-        */
-       if (current_clr_polling_and_test())
-               local_irq_enable();
-       else
-               arch_cpu_idle();
-
-       goto exit_idle;
 }
 
 DEFINE_PER_CPU(bool, cpu_dead_idle);