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drm/i915: Hold a reference to the active HW context

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For virtual engines, we need to keep the HW context alive while it
remains in use. For regular HW contexts, they are created and kept alive
until the end of the GEM context. For simplicity, generalise the
requirements and keep an active reference to each HW context.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190318212347.30146-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-03-18 21:23:47 +00:00
parent 206c2f812f
commit 4c5896dc4c
7 changed files with 35 additions and 5 deletions
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11
drivers/gpu/drm/i915/intel_context.h
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@@ -73,4 +73,15 @@ static inline void __intel_context_pin(struct intel_context *ce)
void intel_context_unpin(struct intel_context *ce);
static inline struct intel_context *intel_context_get(struct intel_context *ce)
{
kref_get(&ce->ref);
return ce;
}
static inline void intel_context_put(struct intel_context *ce)
{
kref_put(&ce->ref, ce->ops->destroy);
}
#endif /* __INTEL_CONTEXT_H__ */