Merge back earlier PM core material for v5.1. (1cc9c595) · Commits · EulixOS / Software / Kernel

drivers/base/power/clock_ops.c

+9 −4

Original line number	Diff line number	Diff line
		@@ -65,12 +65,17 @@ static void pm_clk_acquire(struct device dev, struct pm_clock_entry ce)
		if (IS_ERR(ce->clk)) {
		ce->status = PCE_STATUS_ERROR;
		} else {
		clk_prepare(ce->clk);
		if (clk_prepare(ce->clk)) {
		ce->status = PCE_STATUS_ERROR;
		dev_err(dev, "clk_prepare() failed\n");
		} else {
		ce->status = PCE_STATUS_ACQUIRED;
		dev_dbg(dev, "Clock %pC con_id %s managed by runtime PM.\n",
		dev_dbg(dev,
		"Clock %pC con_id %s managed by runtime PM.\n",
		ce->clk, ce->con_id);
		}
		}
		}

		static int __pm_clk_add(struct device dev, const char con_id,
		struct clk *clk)

drivers/base/power/runtime.c

+28 −7

Original line number	Diff line number	Diff line
		@@ -66,8 +66,8 @@ static int rpm_suspend(struct device *dev, int rpmflags);
		*/
		void update_pm_runtime_accounting(struct device *dev)
		{
		unsigned long now = jiffies;
		unsigned long delta;
		u64 now = ktime_to_ns(ktime_get());
		u64 delta;

		delta = now - dev->power.accounting_timestamp;

		@@ -77,9 +77,9 @@ void update_pm_runtime_accounting(struct device *dev)
		return;

		if (dev->power.runtime_status == RPM_SUSPENDED)
		dev->power.suspended_jiffies += delta;
		dev->power.suspended_time += delta;
		else
		dev->power.active_jiffies += delta;
		dev->power.active_time += delta;
		}

		static void __update_runtime_status(struct device *dev, enum rpm_status status)
		@@ -88,6 +88,22 @@ static void __update_runtime_status(struct device *dev, enum rpm_status status)
		dev->power.runtime_status = status;
		}

		u64 pm_runtime_suspended_time(struct device *dev)
		{
		u64 time;
		unsigned long flags;

		spin_lock_irqsave(&dev->power.lock, flags);

		update_pm_runtime_accounting(dev);
		time = dev->power.suspended_time;

		spin_unlock_irqrestore(&dev->power.lock, flags);

		return time;
		}
		EXPORT_SYMBOL_GPL(pm_runtime_suspended_time);

		/**
		* pm_runtime_deactivate_timer - Deactivate given device's suspend timer.
		* @dev: Device to handle.
		@@ -1294,10 +1310,15 @@ void pm_runtime_enable(struct device *dev)

		spin_lock_irqsave(&dev->power.lock, flags);

		if (dev->power.disable_depth > 0)
		if (dev->power.disable_depth > 0) {
		dev->power.disable_depth--;
		else

		/* About to enable runtime pm, set accounting_timestamp to now */
		if (!dev->power.disable_depth)
		dev->power.accounting_timestamp = ktime_to_ns(ktime_get());
		} else {
		dev_warn(dev, "Unbalanced %s!\n", __func__);
		}

		WARN(!dev->power.disable_depth &&
		dev->power.runtime_status == RPM_SUSPENDED &&
		@@ -1494,7 +1515,7 @@ void pm_runtime_init(struct device *dev)
		dev->power.request_pending = false;
		dev->power.request = RPM_REQ_NONE;
		dev->power.deferred_resume = false;
		dev->power.accounting_timestamp = jiffies;
		dev->power.accounting_timestamp = 0;
		INIT_WORK(&dev->power.work, pm_runtime_work);

		dev->power.timer_expires = 0;

drivers/base/power/sysfs.c

+8 −3

Original line number	Diff line number	Diff line
		@@ -125,9 +125,12 @@ static ssize_t runtime_active_time_show(struct device *dev,
		struct device_attribute attr, char buf)
		{
		int ret;
		u64 tmp;
		spin_lock_irq(&dev->power.lock);
		update_pm_runtime_accounting(dev);
		ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies));
		tmp = dev->power.active_time;
		do_div(tmp, NSEC_PER_MSEC);
		ret = sprintf(buf, "%llu\n", tmp);
		spin_unlock_irq(&dev->power.lock);
		return ret;
		}
		@@ -138,10 +141,12 @@ static ssize_t runtime_suspended_time_show(struct device *dev,
		struct device_attribute attr, char buf)
		{
		int ret;
		u64 tmp;
		spin_lock_irq(&dev->power.lock);
		update_pm_runtime_accounting(dev);
		ret = sprintf(buf, "%i\n",
		jiffies_to_msecs(dev->power.suspended_jiffies));
		tmp = dev->power.suspended_time;
		do_div(tmp, NSEC_PER_MSEC);
		ret = sprintf(buf, "%llu\n", tmp);
		spin_unlock_irq(&dev->power.lock);
		return ret;
		}

drivers/gpu/drm/i915/i915_pmu.c

+6 −10

Original line number	Diff line number	Diff line
		@@ -5,6 +5,7 @@
		*/

		#include <linux/irq.h>
		#include <linux/pm_runtime.h>
		#include "i915_pmu.h"
		#include "intel_ringbuffer.h"
		#include "i915_drv.h"
		@@ -478,7 +479,6 @@ static u64 get_rc6(struct drm_i915_private *i915)
		* counter value.
		*/
		spin_lock_irqsave(&i915->pmu.lock, flags);
		spin_lock(&kdev->power.lock);

		/*
		* After the above branch intel_runtime_pm_get_if_in_use failed
		@@ -491,16 +491,13 @@ static u64 get_rc6(struct drm_i915_private *i915)
		* suspended and if not we cannot do better than report the last
		* known RC6 value.
		*/
		if (kdev->power.runtime_status == RPM_SUSPENDED) {
		if (!i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
		i915->pmu.suspended_jiffies_last =
		kdev->power.suspended_jiffies;
		if (pm_runtime_status_suspended(kdev)) {
		val = pm_runtime_suspended_time(kdev);

		val = kdev->power.suspended_jiffies -
		i915->pmu.suspended_jiffies_last;
		val += jiffies - kdev->power.accounting_timestamp;
		if (!i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
		i915->pmu.suspended_time_last = val;

		val = jiffies_to_nsecs(val);
		val -= i915->pmu.suspended_time_last;
		val += i915->pmu.sample[__I915_SAMPLE_RC6].cur;

		i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
		@@ -510,7 +507,6 @@ static u64 get_rc6(struct drm_i915_private *i915)
		val = i915->pmu.sample[__I915_SAMPLE_RC6].cur;
		}

		spin_unlock(&kdev->power.lock);
		spin_unlock_irqrestore(&i915->pmu.lock, flags);
		}

drivers/gpu/drm/i915/i915_pmu.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -95,9 +95,9 @@ struct i915_pmu {
		*/
		struct i915_pmu_sample sample[__I915_NUM_PMU_SAMPLERS];
		/**
		* @suspended_jiffies_last: Cached suspend time from PM core.
		* @suspended_time_last: Cached suspend time from PM core.
		*/
		unsigned long suspended_jiffies_last;
		u64 suspended_time_last;
		/**
		* @i915_attr: Memory block holding device attributes.
		*/