Chris Wilson 736e785f9b drm/i915/gem: Reduce context termination list iteration guard to RCU ... As we now protect the timeline list using RCU, we can drop the timeline->mutex for guarding the list iteration during context close, as we are searching for an inflight request. Any new request will see the context is banned and not be submitted. In doing so, pull the checks for a concurrent submission of the request (notably the i915_request_completed()) under the engine spinlock, to fully serialise with __i915_request_submit()). That is in the case of preempt-to-busy where the request may be completed during the __i915_request_submit(), we need to be careful that we sample the request status after serialising so that we don't miss the request the engine is actually submitting. Fixes: 4a31741521 ("drm/i915/gem: Refine occupancy test in kill_context()") References: d22d2d073e ("drm/i915: Protect i915_request_await_start from early waits") # rcu protection of timeline->requests References: https://gitlab.freedesktop.org/drm/intel/-/issues/1622 References: https://gitlab.freedesktop.org/drm/intel/-/issues/2158 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/20200806105954.7766-1-chris@chris-wilson.co.uk Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>		2020-09-07 14:28:14 +03:00
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drm	drm/i915/gem: Reduce context termination list iteration guard to RCU	2020-09-07 14:28:14 +03:00
host1x	gpu: host1x: debug: Dump push buffer state	2020-07-17 16:06:14 +02:00
ipu-v3	gpu: ipu-v3: image-convert: Wait for all EOFs before completing a tile	2020-07-20 15:16:05 +02:00
trace
vga	vgaarb: mark vga_tryget static	2020-08-01 11:28:17 +02:00
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