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drm/i915/perf: Track the rpm wakeref

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Keep track of our wakeref used to keep the device awake so we can catch
any leak.

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/20190114142129.24398-7-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-01-14 14:21:15 +00:00
parent a037121c3c
commit 6619c0075f
2 changed files with 5 additions and 3 deletions
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2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1333,6 +1333,8 @@ struct i915_perf_stream {
*/
struct list_head link;
intel_wakeref_t wakeref;
/**
* @sample_flags: Flags representing the `DRM_I915_PERF_PROP_SAMPLE_*`
* properties given when opening a stream, representing the contents

6
drivers/gpu/drm/i915/i915_perf.c
View File

@ -1365,7 +1365,7 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
free_oa_buffer(dev_priv);
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, stream->wakeref);
if (stream->ctx)
oa_put_render_ctx_id(stream);
@ -2087,7 +2087,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
* In our case we are expecting that taking pm + FORCEWAKE
* references will effectively disable RC6.
*/
intel_runtime_pm_get(dev_priv);
stream->wakeref = intel_runtime_pm_get(dev_priv);
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
ret = alloc_oa_buffer(dev_priv);
@ -2123,7 +2123,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
put_oa_config(dev_priv, stream->oa_config);
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, stream->wakeref);
err_config:
if (stream->ctx)