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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-14 17:21:09 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-14 19:17:50 +0300 |
| commit | bd780f37a3617d3dda74b97013ae8aa9b07a1d91 (patch) | |
| tree | 9034d70695f3d72af826142696ad48287b7e7a55 /drivers/gpu/drm/i915/selftests/mock_gem_device.c | |
| parent | 74256b7ecf7790de78ea14facfc9dac02afcc76a (diff) | |
| download | linux-bd780f37a3617d3dda74b97013ae8aa9b07a1d91.tar.xz | |
drm/i915: Track all held rpm wakerefs
Everytime we take a wakeref, record the stack trace of where it was
taken; clearing the set if we ever drop back to no owners. For debugging
a rpm leak, we can look at all the current wakerefs and check if they
have a matching rpm_put.
v2: Use skip=0 for unwinding the stack as it appears our noinline
function doesn't appear on the stack (nor does save_stack_trace itself!)
v3: Allow rpm->debug_count to disappear between inspections and so
avoid calling krealloc(0) as that may return a ZERO_PTR not NULL! (Mika)
v4: Show who last acquire/released the runtime pm
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Tested-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/mock_gem_device.c')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/mock_gem_device.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c index baa3c38919de..082809569681 100644 --- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c +++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c @@ -154,15 +154,17 @@ struct drm_i915_private *mock_gem_device(void) pdev->dev.archdata.iommu = (void *)-1; #endif + i915 = (struct drm_i915_private *)(pdev + 1); + pci_set_drvdata(pdev, i915); + + intel_runtime_pm_init_early(i915); + dev_pm_domain_set(&pdev->dev, &pm_domain); pm_runtime_enable(&pdev->dev); pm_runtime_dont_use_autosuspend(&pdev->dev); if (pm_runtime_enabled(&pdev->dev)) WARN_ON(pm_runtime_get_sync(&pdev->dev)); - i915 = (struct drm_i915_private *)(pdev + 1); - pci_set_drvdata(pdev, i915); - err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); if (err) { pr_err("Failed to initialise mock GEM device: err=%d\n", err); |