Use the new pm runtime interface to get the accounted suspended time:
pm_runtime_suspended_time().
This new interface helps to simplify and cleanup the code that computes
__I915_SAMPLE_RC6_ESTIMATED and to remove direct access to internals of
PM runtime.
Reviewed-by: Ulf Hansson <ulf.hans...@linaro.org>
Signed-off-by: Vincent Guittot <vincent.guit...@linaro.org>
---
drivers/gpu/drm/i915/i915_pmu.c | 16 ++++++----------
drivers/gpu/drm/i915/i915_pmu.h | 4 ++--
2 files changed, 8 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index d6c8f8f..3f76f60 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -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);
}
diff --git a/drivers/gpu/drm/i915/i915_pmu.h b/drivers/gpu/drm/i915/i915_pmu.h
index 7f164ca..3dc2a30 100644
--- a/drivers/gpu/drm/i915/i915_pmu.h
+++ b/drivers/gpu/drm/i915/i915_pmu.h
@@ -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.
*/
--
2.7.4
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