Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 49 insertions, 43 deletions

diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 386888f10df0..bf5092455a8f 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -96,7 +96,15 @@ static void cpuidle_idle_call(void)
 
         /* enter the state and update stats */
         dev->last_state = target_state;
+
+        trace_power_start(POWER_CSTATE, next_state, dev->cpu);
+        trace_cpu_idle(next_state, dev->cpu);
+
         dev->last_residency = target_state->enter(dev, target_state);
+
+        trace_power_end(dev->cpu);
+        trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu);
+
         if (dev->last_state)
                 target_state = dev->last_state;
 
@@ -106,8 +114,6 @@ static void cpuidle_idle_call(void)
         /* give the governor an opportunity to reflect on the outcome */
         if (cpuidle_curr_governor->reflect)
                 cpuidle_curr_governor->reflect(dev);
-        trace_power_end(smp_processor_id());
-        trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id());
 }
 
 /**
@@ -155,6 +161,45 @@ void cpuidle_resume_and_unlock(void)
 
 EXPORT_SYMBOL_GPL(cpuidle_resume_and_unlock);
 
+#ifdef CONFIG_ARCH_HAS_CPU_RELAX
+static int poll_idle(struct cpuidle_device *dev, struct cpuidle_state *st)
+{
+        ktime_t t1, t2;
+        s64 diff;
+        int ret;
+
+        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;
+
+        ret = (int) diff;
+        return ret;
+}
+
+static void poll_idle_init(struct cpuidle_device *dev)
+{
+        struct cpuidle_state *state = &dev->states[0];
+
+        cpuidle_set_statedata(state, NULL);
+
+        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;
+}
+#else
+static void poll_idle_init(struct cpuidle_device *dev) {}
+#endif /* CONFIG_ARCH_HAS_CPU_RELAX */
+
 /**
  * cpuidle_enable_device - enables idle PM for a CPU
  * @dev: the CPU
@@ -179,6 +224,8 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
                         return ret;
         }
 
+        poll_idle_init(dev);
+
         if ((ret = cpuidle_add_state_sysfs(dev)))
                 return ret;
 
@@ -233,45 +280,6 @@ void cpuidle_disable_device(struct cpuidle_device *dev)
 
 EXPORT_SYMBOL_GPL(cpuidle_disable_device);
 
-#ifdef CONFIG_ARCH_HAS_CPU_RELAX
-static int poll_idle(struct cpuidle_device *dev, struct cpuidle_state *st)
-{
-        ktime_t t1, t2;
-        s64 diff;
-        int ret;
-
-        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;
-
-        ret = (int) diff;
-        return ret;
-}
-
-static void poll_idle_init(struct cpuidle_device *dev)
-{
-        struct cpuidle_state *state = &dev->states[0];
-
-        cpuidle_set_statedata(state, NULL);
-
-        snprintf(state->name, CPUIDLE_NAME_LEN, "C0");
-        snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
-        state->exit_latency = 0;
-        state->target_residency = 0;
-        state->power_usage = -1;
-        state->flags = CPUIDLE_FLAG_POLL;
-        state->enter = poll_idle;
-}
-#else
-static void poll_idle_init(struct cpuidle_device *dev) {}
-#endif /* CONFIG_ARCH_HAS_CPU_RELAX */
-
 /**
  * __cpuidle_register_device - internal register function called before register
  * and enable routines
@@ -292,8 +300,6 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
 
         init_completion(&dev->kobj_unregister);
 
-        poll_idle_init(dev);
-
         /*
          * cpuidle driver should set the dev->power_specified bit
          * before registering the device if the driver provides