linux_dsm_epyc7002/drivers/gpu/drm/i915/gem
Chris Wilson 5a90606df7 drm/i915: Replace obj->pin_global with obj->frontbuffer
obj->pin_global was originally used as a means to keep the shrinker off
the active scanout, but we use the vma->pin_count itself for that and
the obj->frontbuffer to delay shrinking active framebuffers. The other
role that obj->pin_global gained was for spotting display objects inside
GEM and working harder to keep those coherent; for which we can again
simply inspect obj->frontbuffer directly.

Coming up next, we will want to manipulate the pin_global counter
outside of the principle locks, so would need to make pin_global atomic.
However, since obj->frontbuffer is already managed atomically, it makes
sense to use that the primary key for display objects instead of having
pin_global.

Ville pointed out the principle difference is that obj->frontbuffer is
set for as long as an intel_framebuffer is attached to an object, but
obj->pin_global was only raised for as long as the object was active. In
practice, this means that we consider the object as being on the scanout
for longer than is strictly required, causing us to be more proactive in
flushing -- though it should be true that we would have flushed
eventually when the back became the front, except that on the flip path
that flush is async but when hit from another ioctl it will be
synchronous.

v2: i915_gem_object_is_framebuffer()

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190902040303.14195-5-chris@chris-wilson.co.uk
2019-09-03 05:39:37 +01:00
..
selftests drm/i915/selftests: Try to recycle context allocations 2019-08-28 08:32:02 +01:00
i915_gem_busy.c dma-buf: Restore seqlock around dma_resv updates 2019-08-16 12:40:58 +01:00
i915_gem_clflush.c drm/i915: Generalise the clflush dma-worker 2019-08-22 08:27:44 +01:00
i915_gem_clflush.h drm/i915: Move more GEM objects under gem/ 2019-05-28 12:45:29 +01:00
i915_gem_client_blt.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_gem_client_blt.h drm/i915: add in-kernel blitter client 2019-05-30 12:01:44 +01:00
i915_gem_context_types.h drm/i915: Push the ring creation flags to the backend 2019-08-09 20:18:30 +01:00
i915_gem_context.c drm/i915: Report aliasing ppgtt size as ggtt size 2019-09-03 05:29:33 +01:00
i915_gem_context.h drm/i915: Remove i915_gem_context_create_gvt() 2019-08-09 20:18:30 +01:00
i915_gem_dmabuf.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
i915_gem_domain.c drm/i915: Replace obj->pin_global with obj->frontbuffer 2019-09-03 05:39:37 +01:00
i915_gem_execbuffer.c drm/i915: use a separate context for gpu relocs 2019-08-27 21:14:43 +01:00
i915_gem_fence.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_gem_internal.c drm/i915: Pull scatterlist utils out of i915_gem.h 2019-05-28 12:45:29 +01:00
i915_gem_ioctls.h
i915_gem_mman.c drm/i915: Use NOEVICT for first pass on attemping to pin a GGTT mmap 2019-08-27 10:36:48 +01:00
i915_gem_object_blt.c drm/i915: Make engine's batch pool safe for use with virtual engines 2019-08-27 16:42:12 +01:00
i915_gem_object_blt.h drm/i915/blt: support copying objects 2019-08-10 19:35:36 +01:00
i915_gem_object_types.h drm/i915: Replace obj->pin_global with obj->frontbuffer 2019-09-03 05:39:37 +01:00
i915_gem_object.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_gem_object.h drm/i915: Replace obj->pin_global with obj->frontbuffer 2019-09-03 05:39:37 +01:00
i915_gem_pages.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_gem_phys.c drm/i915: Free the imported shmemfs file for phys objects 2019-08-09 13:32:29 +01:00
i915_gem_pm.c drm/i915/gt: Track timeline activeness in enter/exit 2019-08-15 23:16:05 +01:00
i915_gem_pm.h drm/i915: Move more GEM objects under gem/ 2019-05-28 12:45:29 +01:00
i915_gem_shmem.c drm/i915: avoid including intel_drv.h via i915_drv.h->i915_trace.h 2019-08-07 12:43:14 +03:00
i915_gem_shrinker.c drm/i915: Replace obj->pin_global with obj->frontbuffer 2019-09-03 05:39:37 +01:00
i915_gem_shrinker.h drm/i915: extract i915_gem_shrinker.h from i915_drv.h 2019-08-09 12:03:32 +03:00
i915_gem_stolen.c drm/i915: Convert a few more bland dmesg info to be device specific 2019-08-15 13:13:23 +01:00
i915_gem_stolen.h drm/i915: extract gem/i915_gem_stolen.h from i915_drv.h 2019-08-09 12:03:29 +03:00
i915_gem_throttle.c drm/i915: Keep drm_i915_file_private around under RCU 2019-08-23 22:13:17 +01:00
i915_gem_tiling.c drm/i915: Move more GEM objects under gem/ 2019-05-28 12:45:29 +01:00
i915_gem_userptr.c drm/i915: remove unnecessary includes of intel_display_types.h header 2019-08-07 12:43:55 +03:00
i915_gem_wait.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
i915_gemfs.c drm/i915: Stop reconfiguring our shmemfs mountpoint 2019-08-09 20:18:30 +01:00
i915_gemfs.h drm/i915: Move more GEM objects under gem/ 2019-05-28 12:45:29 +01:00
Makefile drm/i915: use upstream version of header tests 2019-07-30 12:11:57 +03:00