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4 Commits

Author SHA1 Message Date
Chris Wilson
92581f9fb9 drm/i915: Immediately execute the fenced work 
If the caller allows and we do not have to wait for any signals,
immediately execute the work within the caller's process. By doing so we
avoid the overhead of scheduling a new task, and the latency in
executing it, at the cost of pulling that work back into the immediate
context. (Sometimes we still prefer to offload the task to another cpu,
especially if we plan on executing many such tasks in parallel for this
client.)

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/20200325120227.8044-2-chris@chris-wilson.co.uk
 2020-03-25 13:05:04 +00:00
Chris Wilson
54d7195f8c drm/i915: Unpin vma->obj on early error 
If we inherit an error along the fence chain, we skip the main work
callback and go straight to the error. In the case of the vma bind
worker, we only dropped the pinned pages from the worker.

In the process, make sure we call the release earlier rather than wait
until the final reference to the fence is dropped (as a reference is
kept while being listened upon).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191216161717.2688274-1-chris@chris-wilson.co.uk
 2019-12-18 10:13:03 +00:00
Chris Wilson
1bc9865d8d drm/i915: Set fence_work.ops before dma_fence_init 
Since dma_fence_init may call ops (because of a meaningless
trace_dma_fence), we need to set the worker ops prior to that call.

Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 8e458fe2ee05 ("drm/i915: Generalise the clflush dma-worker")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191212154224.1631531-1-chris@chris-wilson.co.uk
 2019-12-12 18:35:32 +00:00
Chris Wilson
8e458fe2ee drm/i915: Generalise the clflush dma-worker 
Extract the dma-fence worker used by clflush for wider use, as we
anticipate using workers coupled to dma-fences more frequently.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190821191606.17001-1-chris@chris-wilson.co.uk
 2019-08-22 08:27:44 +01:00