diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2021-06-17 08:30:13 +0200 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2021-06-17 15:23:05 +0200 |
| commit | cf586021642d8017cde111b7dd1ba86224e9da51 (patch) | |
| tree | bd57448d1d6b5664b04debaf7dfa70c200a97909 /drivers/gpu/drm/i915/selftests/i915_live_selftests.h | |
| parent | drm/i915/gt: Export the pinned context constructor and destructor (diff) | |
| download | linux-cf586021642d8017cde111b7dd1ba86224e9da51.tar.xz linux-cf586021642d8017cde111b7dd1ba86224e9da51.zip | |
drm/i915/gt: Pipelined page migration
If we pipeline the PTE updates and then do the copy of those pages
within a single unpreemptible command packet, we can submit the copies
and leave them to be scheduled without having to synchronously wait
under a global lock. In order to manage migration, we need to
preallocate the page tables (and keep them pinned and available for use
at any time), causing a bottleneck for migrations as all clients must
contend on the limited resources. By inlining the ppGTT updates and
performing the blit atomically, each client only owns the PTE while in
use, and so we can reschedule individual operations however we see fit.
And most importantly, we do not need to take a global lock on the shared
vm, and wait until the operation is complete before releasing the lock
for others to claim the PTE for themselves.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210617063018.92802-8-thomas.hellstrom@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_live_selftests.h')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_live_selftests.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h index a92c0e9b7e6b..be5e0191eaea 100644 --- a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h +++ b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h @@ -26,6 +26,7 @@ selftest(gt_mocs, intel_mocs_live_selftests) selftest(gt_pm, intel_gt_pm_live_selftests) selftest(gt_heartbeat, intel_heartbeat_live_selftests) selftest(requests, i915_request_live_selftests) +selftest(migrate, intel_migrate_live_selftests) selftest(active, i915_active_live_selftests) selftest(objects, i915_gem_object_live_selftests) selftest(mman, i915_gem_mman_live_selftests) |