drm/i915/gvt: Move request alloc to dispatch_workload path only

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Previously the performance is improved through the workload auditing
and shadowing ahead of vGPU scheduling, however, there is the case that
more requests are allocated in submit_context before the previous request
is added, the timeline will hold its seqno which is later.

This patch is to move the request alloc to dispatch_workload function,
where is the same place as request is added.

It will fix the issue of kernel BUG for (timeline->seqno != request->fence.seqno)
check when add_request.

Fixes: 89ea20b930 ("drm/i915/gvt: Factor out scan and shadow from workload dispatch")
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: fred gao <fred.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
(cherry picked from commit f2880e04f3)

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This commit is contained in:

fred gao 2017-11-14 17:09:35 +08:00 • committed by Zhenyu Wang

parent bf3a26b3cb

commit c3c80f0736

3 changed files with 29 additions and 4 deletions

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6

drivers/gpu/drm/i915/gvt/execlist.c

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24

drivers/gpu/drm/i915/gvt/scheduler.c

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3

drivers/gpu/drm/i915/gvt/scheduler.h

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