cpuidle: don't call poll_idle_init() for every cpu

[deliverable/linux.git] / drivers / cpuidle / cpuidle.c

diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 039a807b217a80360efb1a445ccd2c1f010ddcc4..2a991e468f78190e1dfab933225d33cfef69d710 100644 (file)
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -226,45 +226,6 @@ void cpuidle_resume(void)
        mutex_unlock(&cpuidle_lock);
 }
 
-#ifdef CONFIG_ARCH_HAS_CPU_RELAX
-static int poll_idle(struct cpuidle_device *dev,
-               struct cpuidle_driver *drv, int index)
-{
-       ktime_t t1, t2;
-       s64 diff;
-
-       t1 = ktime_get();
-       local_irq_enable();
-       while (!need_resched())
-               cpu_relax();
-
-       t2 = ktime_get();
-       diff = ktime_to_us(ktime_sub(t2, t1));
-       if (diff > INT_MAX)
-               diff = INT_MAX;
-
-       dev->last_residency = (int) diff;
-
-       return index;
-}
-
-static void poll_idle_init(struct cpuidle_driver *drv)
-{
-       struct cpuidle_state *state = &drv->states[0];
-
-       snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
-       snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
-       state->exit_latency = 0;
-       state->target_residency = 0;
-       state->power_usage = -1;
-       state->flags = 0;
-       state->enter = poll_idle;
-       state->disabled = false;
-}
-#else
-static void poll_idle_init(struct cpuidle_driver *drv) {}
-#endif /* CONFIG_ARCH_HAS_CPU_RELAX */
-
 /**
  * cpuidle_enable_device - enables idle PM for a CPU
  * @dev: the CPU
@@ -294,8 +255,6 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
        if (!dev->state_count)
                dev->state_count = drv->state_count;
 
-       poll_idle_init(drv);
-
        ret = cpuidle_add_device_sysfs(dev);
        if (ret)
                return ret;