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42fb60de31
linux_dsm_epyc7002/drivers/gpu/drm/i915/gem
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Chris Wilson 42fb60de31 drm/i915/gem: Don't leak non-persistent requests on changing engines 
If we have a set of active engines marked as being non-persistent, we
lose track of those if the user replaces those engines with
I915_CONTEXT_PARAM_ENGINES. As part of our uABI contract is that
non-persistent requests are terminated if they are no longer being
tracked by the user's context (in order to prevent a lost request
causing an untracked and so unstoppable GPU hang), we need to apply the
same context cancellation upon changing engines.

v2: Track stale engines[] so we only reap at context closure.
v3: Tvrtko spotted races with closing contexts and set-engines, so add a
veneer of kill-everything paranoia to clean up after losing a race.

Fixes: a0e047156c ("drm/i915/gem: Make context persistence optional")
Testcase: igt/gem_ctx_peristence/replace
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200211144831.1011498-1-chris@chris-wilson.co.uk
2020-02-11 21:58:39 +00:00
..
selftests drm/i915/selftests: Trim blitter block size 2020-02-10 23:13:09 +00:00
i915_gem_busy.c drm/i915: Align engine->uabi_class/instance with i915_drm.h 2020-01-20 09:13:01 +00:00
i915_gem_clflush.c drm/i915: Hold reference to intel_frontbuffer as we track activity 2019-12-18 12:09:57 +00:00
i915_gem_clflush.h
i915_gem_client_blt.c
i915_gem_client_blt.h
i915_gem_context_types.h drm/i915/gem: Don't leak non-persistent requests on changing engines 2020-02-11 21:58:39 +00:00
i915_gem_context.c drm/i915/gem: Don't leak non-persistent requests on changing engines 2020-02-11 21:58:39 +00:00
i915_gem_context.h drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00
i915_gem_dmabuf.c drm/i915: Skip CPU synchronisation on dmabuf attachments 2020-02-11 00:16:15 +00:00
i915_gem_domain.c drm/i915: Hold reference to intel_frontbuffer as we track activity 2019-12-18 12:09:57 +00:00
i915_gem_execbuffer.c drm/i915: Remove 'prefault_disable' modparam 2020-01-27 11:45:35 +00:00
i915_gem_fence.c
i915_gem_internal.c
i915_gem_ioctls.h drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET 2019-12-04 15:11:44 +00:00
i915_gem_lmem.c drm/i915/gem: Support discontiguous lmem object maps 2020-01-03 11:26:01 +00:00
i915_gem_lmem.h drm/i915/gem: Support discontiguous lmem object maps 2020-01-03 11:26:01 +00:00
i915_gem_mman.c drm/i915: Never allow userptr into the new mapping types 2020-02-08 11:26:03 +00:00
i915_gem_mman.h drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET 2019-12-04 15:11:44 +00:00
i915_gem_object_blt.c
i915_gem_object_blt.h
i915_gem_object_types.h drm/i915: Never allow userptr into the new mapping types 2020-02-08 11:26:03 +00:00
i915_gem_object.c drm/i915/gem: Store mmap_offsets in an rbtree rather than a plain list 2020-01-20 15:38:37 +00:00
i915_gem_object.h drm/i915: Never allow userptr into the new mapping types 2020-02-08 11:26:03 +00:00
i915_gem_pages.c drm/i915/gem: manual conversion to struct drm_device logging macros. 2020-01-27 11:07:06 +02:00
i915_gem_phys.c drm/i915: Wean off drm_pci_alloc/drm_pci_free 2020-02-04 13:06:19 +00:00
i915_gem_pm.c drm/i915/gem: Make WARN* drm specific where drm_priv ptr is available 2020-01-22 17:52:39 +02:00
i915_gem_pm.h
i915_gem_region.c drm/i915/gem: Single page objects are naturally contiguous 2020-01-02 21:21:17 +00:00
i915_gem_region.h
i915_gem_shmem.c drm/i915/gem: Make WARN* drm specific where drm_priv ptr is available 2020-01-22 17:52:39 +02:00
i915_gem_shrinker.c drm/i915/gem: Make WARN* drm specific where drm_priv ptr is available 2020-01-22 17:52:39 +02:00
i915_gem_shrinker.h
i915_gem_stolen.c drm/i915/display: Be explicit in handling the preallocated vma 2020-02-05 09:20:39 +00:00
i915_gem_stolen.h drm/i915/display: Be explicit in handling the preallocated vma 2020-02-05 09:20:39 +00:00
i915_gem_throttle.c
i915_gem_tiling.c drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET 2019-12-04 15:11:44 +00:00
i915_gem_userptr.c drm/i915: Never allow userptr into the new mapping types 2020-02-08 11:26:03 +00:00
i915_gem_wait.c
i915_gemfs.c
i915_gemfs.h