diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-02 11:00:15 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-02 11:53:04 +0100 |
| commit | d8af05ff38ae7a42819b285ffef314942414ef8b (patch) | |
| tree | 1ec8990be56972746cada518e40e07f64696fd3a /drivers/gpu/drm/i915/gt/intel_context.h | |
| parent | 576f05865581f82ac988ffec70e4e2ebd31165db (diff) | |
drm/i915: Allow sharing the idle-barrier from other kernel requests
By placing our idle-barriers in the i915_active fence tree, we expose
those for reuse by other components that are issuing requests along the
kernel_context. Reusing the proto-barrier active_node is perfectly fine
as the new request implies a context-switch, and so an opportune point
to run the idle-barrier. However, the proto-barrier is not equivalent
to a normal active_node and care must be taken to avoid dereferencing the
ERR_PTR used as its request marker.
v2: Comment the more egregious cheek
v3: A glossary!
Reported-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: ce476c80b8bf ("drm/i915: Keep contexts pinned until after the next kernel context switch")
Fixes: a9877da2d629 ("drm/i915/oa: Reconfigure contexts on the fly")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190802100015.1281-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_context.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_context.h | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h index 23c7e4c0ce7c..07f9924de48f 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.h +++ b/drivers/gpu/drm/i915/gt/intel_context.h @@ -104,17 +104,8 @@ static inline void intel_context_exit(struct intel_context *ce) ce->ops->exit(ce); } -static inline int intel_context_active_acquire(struct intel_context *ce) -{ - return i915_active_acquire(&ce->active); -} - -static inline void intel_context_active_release(struct intel_context *ce) -{ - /* Nodes preallocated in intel_context_active() */ - i915_active_acquire_barrier(&ce->active); - i915_active_release(&ce->active); -} +int intel_context_active_acquire(struct intel_context *ce); +void intel_context_active_release(struct intel_context *ce); static inline struct intel_context *intel_context_get(struct intel_context *ce) { |