---

yaml --- r: 336737 b: refs/heads/master c: a474a51 h: refs/heads/master i: 336735: d679e16 v: v3
git-mirror · Nov 27, 2012 · 633e056 · 633e056
1 parent d961b63
commit 633e056
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Showing 5 changed files with 8 additions and 72 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a093b93ee0e08cd73a07848752bc09ecea68cb13
+refs/heads/master: a474a515497ef3566cfc17a2cab3d54d6d50ff1c
diff --git a/trunk/arch/powerpc/platforms/pseries/processor_idle.c b/trunk/arch/powerpc/platforms/pseries/processor_idle.c
@@ -36,7 +36,7 @@ static struct cpuidle_state *cpuidle_state_table;
 static inline void idle_loop_prolog(unsigned long *in_purr, ktime_t *kt_before)
 {
 
-	*kt_before = ktime_get_real();
+	*kt_before = ktime_get();
 	*in_purr = mfspr(SPRN_PURR);
 	/*
 	 * Indicate to the HV that we are idle. Now would be
@@ -50,7 +50,7 @@ static inline  s64 idle_loop_epilog(unsigned long in_purr, ktime_t kt_before)
 	get_lppaca()->wait_state_cycles += mfspr(SPRN_PURR) - in_purr;
 	get_lppaca()->idle = 0;
 
-	return ktime_to_us(ktime_sub(ktime_get_real(), kt_before));
+	return ktime_to_us(ktime_sub(ktime_get(), kt_before));
 }
 
 static int snooze_loop(struct cpuidle_device *dev,

diff --git a/trunk/drivers/acpi/processor_idle.c b/trunk/drivers/acpi/processor_idle.c
@@ -735,31 +735,18 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
 static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index)
 {
-	ktime_t  kt1, kt2;
-	s64 idle_time;
 	struct acpi_processor *pr;
 	struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
 	struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage);
 
 	pr = __this_cpu_read(processors);
-	dev->last_residency = 0;
 
 	if (unlikely(!pr))
 		return -EINVAL;
 
-	local_irq_disable();
-
-
 	lapic_timer_state_broadcast(pr, cx, 1);
-	kt1 = ktime_get_real();
 	acpi_idle_do_entry(cx);
-	kt2 = ktime_get_real();
-	idle_time =  ktime_to_us(ktime_sub(kt2, kt1));
-
-	/* Update device last_residency*/
-	dev->last_residency = (int)idle_time;
 
-	local_irq_enable();
 	lapic_timer_state_broadcast(pr, cx, 0);
 
 	return index;
@@ -806,19 +793,12 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 	struct acpi_processor *pr;
 	struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
 	struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage);
-	ktime_t  kt1, kt2;
-	s64 idle_time_ns;
-	s64 idle_time;
 
 	pr = __this_cpu_read(processors);
-	dev->last_residency = 0;
 
 	if (unlikely(!pr))
 		return -EINVAL;
 
-	local_irq_disable();
-
-
 	if (cx->entry_method != ACPI_CSTATE_FFH) {
 		current_thread_info()->status &= ~TS_POLLING;
 		/*
@@ -829,7 +809,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 
 		if (unlikely(need_resched())) {
 			current_thread_info()->status |= TS_POLLING;
-			local_irq_enable();
 			return -EINVAL;
 		}
 	}
@@ -843,22 +822,12 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 	if (cx->type == ACPI_STATE_C3)
 		ACPI_FLUSH_CPU_CACHE();
 
-	kt1 = ktime_get_real();
 	/* Tell the scheduler that we are going deep-idle: */
 	sched_clock_idle_sleep_event();
 	acpi_idle_do_entry(cx);
-	kt2 = ktime_get_real();
-	idle_time_ns = ktime_to_ns(ktime_sub(kt2, kt1));
-	idle_time = idle_time_ns;
-	do_div(idle_time, NSEC_PER_USEC);
 
-	/* Update device last_residency*/
-	dev->last_residency = (int)idle_time;
+	sched_clock_idle_wakeup_event(0);
 
-	/* Tell the scheduler how much we idled: */
-	sched_clock_idle_wakeup_event(idle_time_ns);
-
-	local_irq_enable();
 	if (cx->entry_method != ACPI_CSTATE_FFH)
 		current_thread_info()->status |= TS_POLLING;
 
@@ -883,13 +852,8 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 	struct acpi_processor *pr;
 	struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
 	struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage);
-	ktime_t  kt1, kt2;
-	s64 idle_time_ns;
-	s64 idle_time;
-
 
 	pr = __this_cpu_read(processors);
-	dev->last_residency = 0;
 
 	if (unlikely(!pr))
 		return -EINVAL;
@@ -899,16 +863,11 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 			return drv->states[drv->safe_state_index].enter(dev,
 						drv, drv->safe_state_index);
 		} else {
-			local_irq_disable();
 			acpi_safe_halt();
-			local_irq_enable();
 			return -EBUSY;
 		}
 	}
 
-	local_irq_disable();
-
-
 	if (cx->entry_method != ACPI_CSTATE_FFH) {
 		current_thread_info()->status &= ~TS_POLLING;
 		/*
@@ -919,7 +878,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 
 		if (unlikely(need_resched())) {
 			current_thread_info()->status |= TS_POLLING;
-			local_irq_enable();
 			return -EINVAL;
 		}
 	}
@@ -934,7 +892,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 	 */
 	lapic_timer_state_broadcast(pr, cx, 1);
 
-	kt1 = ktime_get_real();
 	/*
 	 * disable bus master
 	 * bm_check implies we need ARB_DIS
@@ -965,18 +922,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 		c3_cpu_count--;
 		raw_spin_unlock(&c3_lock);
 	}
-	kt2 = ktime_get_real();
-	idle_time_ns = ktime_to_ns(ktime_sub(kt2, kt1));
-	idle_time = idle_time_ns;
-	do_div(idle_time, NSEC_PER_USEC);
-
-	/* Update device last_residency*/
-	dev->last_residency = (int)idle_time;
 
-	/* Tell the scheduler how much we idled: */
-	sched_clock_idle_wakeup_event(idle_time_ns);
+	sched_clock_idle_wakeup_event(0);
 
-	local_irq_enable();
 	if (cx->entry_method != ACPI_CSTATE_FFH)
 		current_thread_info()->status |= TS_POLLING;
 
@@ -987,6 +935,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 struct cpuidle_driver acpi_idle_driver = {
 	.name =		"acpi_idle",
 	.owner =	THIS_MODULE,
+	.en_core_tk_irqen = 1,
 };
 
 /**

diff --git a/trunk/drivers/cpuidle/cpuidle.c b/trunk/drivers/cpuidle/cpuidle.c
@@ -109,8 +109,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
 		/* This can be moved to within driver enter routine
 		 * but that results in multiple copies of same code.
 		 */
-		dev->states_usage[entered_state].time +=
-				(unsigned long long)dev->last_residency;
+		dev->states_usage[entered_state].time += dev->last_residency;
 		dev->states_usage[entered_state].usage++;
 	} else {
 		dev->last_residency = 0;

diff --git a/trunk/drivers/idle/intel_idle.c b/trunk/drivers/idle/intel_idle.c
@@ -56,7 +56,6 @@
 #include <linux/kernel.h>
 #include <linux/cpuidle.h>
 #include <linux/clockchips.h>
-#include <linux/hrtimer.h>	/* ktime_get_real() */
 #include <trace/events/power.h>
 #include <linux/sched.h>
 #include <linux/notifier.h>
@@ -72,6 +71,7 @@
 static struct cpuidle_driver intel_idle_driver = {
 	.name = "intel_idle",
 	.owner = THIS_MODULE,
+	.en_core_tk_irqen = 1,
 };
 /* intel_idle.max_cstate=0 disables driver */
 static int max_cstate = MWAIT_MAX_NUM_CSTATES - 1;
@@ -281,8 +281,6 @@ static int intel_idle(struct cpuidle_device *dev,
 	struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
 	unsigned long eax = (unsigned long)cpuidle_get_statedata(state_usage);
 	unsigned int cstate;
-	ktime_t kt_before, kt_after;
-	s64 usec_delta;
 	int cpu = smp_processor_id();
 
 	cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) & MWAIT_CSTATE_MASK) + 1;
@@ -297,8 +295,6 @@ static int intel_idle(struct cpuidle_device *dev,
 	if (!(lapic_timer_reliable_states & (1 << (cstate))))
 		clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu);
 
-	kt_before = ktime_get_real();
-
 	stop_critical_timings();
 	if (!need_resched()) {
 
@@ -310,17 +306,9 @@ static int intel_idle(struct cpuidle_device *dev,
 
 	start_critical_timings();
 
-	kt_after = ktime_get_real();
-	usec_delta = ktime_to_us(ktime_sub(kt_after, kt_before));
-
-	local_irq_enable();
-
 	if (!(lapic_timer_reliable_states & (1 << (cstate))))
 		clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu);
 
-	/* Update cpuidle counters */
-	dev->last_residency = (int)usec_delta;
-
 	return index;
 }