drm/i915: Mark intel_wakeref_get() as a sleeper

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Assume that intel_wakeref_get() may take the mutex, and perform other
sleeping actions in the course of its callbacks and so use might_sleep()
to ensure that all callers abide. Anything that cannot sleep has to use
e.g. intel_wakeref_get_if_active() to guarantee its avoidance of the
non-atomic paths.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191121130528.309474-1-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2019-11-21 13:05:28 +00:00

parent c95d31c3df

commit 93b0e8fe47

4 changed files with 24 additions and 4 deletions

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5

drivers/gpu/drm/i915/gt/intel_gt_pm.h

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2

drivers/gpu/drm/i915/gt/intel_lrc.c

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2

drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c

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19

drivers/gpu/drm/i915/intel_wakeref.h

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