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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-14 14:21:16 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-14 16:18:11 +0000 |
| commit | 00e27cbe4c8960b79324ccd48a6077e251e42bd7 (patch) | |
| tree | f88461be27f44484af3fbd9d83e536ad7909ea21 /drivers/gpu/drm/i915/i915_pmu.c | |
| parent | 6619c0075f784d7720fc9810279c956d51b22aaf (diff) | |
| download | linux-00e27cbe4c8960b79324ccd48a6077e251e42bd7.tar.bz2 | |
drm/i915/pmu: Track rpm wakeref
Track the wakeref used for temporary access to the device, and discard
it upon release so that leaks can be identified.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-8-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pmu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pmu.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index c99fcfce79d5..3d43fc9dd25d 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -167,6 +167,7 @@ engines_sample(struct drm_i915_private *dev_priv, unsigned int period_ns) { struct intel_engine_cs *engine; enum intel_engine_id id; + intel_wakeref_t wakeref; bool fw = false; if ((dev_priv->pmu.enable & ENGINE_SAMPLE_MASK) == 0) @@ -175,7 +176,8 @@ engines_sample(struct drm_i915_private *dev_priv, unsigned int period_ns) if (!dev_priv->gt.awake) return; - if (!intel_runtime_pm_get_if_in_use(dev_priv)) + wakeref = intel_runtime_pm_get_if_in_use(dev_priv); + if (!wakeref) return; for_each_engine(engine, dev_priv, id) { @@ -210,7 +212,7 @@ engines_sample(struct drm_i915_private *dev_priv, unsigned int period_ns) if (fw) intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); - intel_runtime_pm_put_unchecked(dev_priv); + intel_runtime_pm_put(dev_priv, wakeref); } static void @@ -227,11 +229,15 @@ frequency_sample(struct drm_i915_private *dev_priv, unsigned int period_ns) u32 val; val = dev_priv->gt_pm.rps.cur_freq; - if (dev_priv->gt.awake && - intel_runtime_pm_get_if_in_use(dev_priv)) { - val = intel_get_cagf(dev_priv, - I915_READ_NOTRACE(GEN6_RPSTAT1)); - intel_runtime_pm_put_unchecked(dev_priv); + if (dev_priv->gt.awake) { + intel_wakeref_t wakeref = + intel_runtime_pm_get_if_in_use(dev_priv); + + if (wakeref) { + val = intel_get_cagf(dev_priv, + I915_READ_NOTRACE(GEN6_RPSTAT1)); + intel_runtime_pm_put(dev_priv, wakeref); + } } add_sample_mult(&dev_priv->pmu.sample[__I915_SAMPLE_FREQ_ACT], @@ -443,12 +449,14 @@ static u64 __get_rc6(struct drm_i915_private *i915) static u64 get_rc6(struct drm_i915_private *i915) { #if IS_ENABLED(CONFIG_PM) + intel_wakeref_t wakeref; unsigned long flags; u64 val; - if (intel_runtime_pm_get_if_in_use(i915)) { + wakeref = intel_runtime_pm_get_if_in_use(i915); + if (wakeref) { val = __get_rc6(i915); - intel_runtime_pm_put_unchecked(i915); + intel_runtime_pm_put(i915, wakeref); /* * If we are coming back from being runtime suspended we must |