Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9f792eba authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Store the execution priority on the context 



In order to support userspace defining different levels of importance to
different contexts, and in particular the preferred order of execution,
store a priority value on each context. By default, the kernel's
context, which is used for idling and other background tasks, is given
minimum priority (i.e. all user contexts will execute before the kernel).

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161114204105.29171-9-chris@chris-wilson.co.uk
parent 20311bd3

drivers/gpu/drm/i915/i915_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -936,6 +936,7 @@ struct i915_gem_context { 
	/* Unique identifier for this context, used by the hw for tracking */

	unsigned int hw_id;

	u32 user_handle;

	int priority; /* greater priorities are serviced first */



	u32 ggtt_alignment;

drivers/gpu/drm/i915/i915_gem_context.c

+1 −0
Original line number Diff line number Diff line
@@ -476,6 +476,7 @@ int i915_gem_context_init(struct drm_device *dev) 
		return PTR_ERR(ctx);

	}



	ctx->priority = I915_PRIORITY_MIN; /* lowest priority; idle task */

	dev_priv->kernel_context = ctx;



	DRM_DEBUG_DRIVER("%s context support initialized\n",

drivers/gpu/drm/i915/i915_gem_request.c

+1 −1
Original line number Diff line number Diff line
@@ -867,7 +867,7 @@ void __i915_add_request(struct drm_i915_gem_request *request, bool flush_caches) 
	 * run at the earliest possible convenience.

	 */

	if (engine->schedule)

		engine->schedule(request, 0);

		engine->schedule(request, request->ctx->priority);



	local_bh_disable();

	i915_sw_fence_commit(&request->submit);