These are cherry-picks from the xe shrinker series here: https://patchwork.freedesktop.org/series/131815/ extracted to speed up review progress and inclusion. The series provides a restartable LRU walk and makes it possible resume the walk after dropping the lock to evict or swap out. Patch 1-4 implements restartable LRU list iteration. Patch 5 implements a LRU walker + resv locking helper Patch 6 moves TTM swapping over to the walker. Patch 7 moves TTM eviction over to the walker. Patch 8 Balances the struct ttm_resource_cursor interface v2: - Squash obsolete revision history in the patch commit messages. - Fix a couple of review comments by Christian - Don't store the mem_type in the TTM managers but in the resource cursor. - Rename introduced TTM *back_up* function names to *backup* - Add ttm pool recovery fault injection. - Shrinker xe kunit test - Various bugfixes v3: - Address some review comments from Matthew Brost and Christian König. - Use the restartable LRU walk for TTM swapping and eviction. - Provide a POC drm_exec locking implementation for exhaustive eviction. (Christian König). v4: - Remove the RFC exhaustive eviction part. While the path to exhaustive eviction is pretty clear and demonstrated in v3, there is still some drm_exec work that needs to be agreed and implemented. - Add shrinker power management. On some hw we need to wake when shrinking. - Fix the lru walker helper for -EALREADY errors. - Add drm/xe: Increase the XE_PL_TT watermark. v5: - Update also TTM kunit tests - Handle ghost- and zombie objects in the shrinker. - A couple of compile- and UAF fixes reported by Kernel Build Robot and Dan Carpenter. v6: - Address review comments from Matthew Brost as detailed in patches 4/12, 5/12, 6/12, 7/12, 8/12. v7: - Drop previous patches 8-12 for now and concentrate on 1-7 - Add a new patch 8 to balance the ttm_resource_cursor interface (Christian König) - Fix various style comments from Christian König in patch 5-7. - Update Reviewed-by: and Acked tags. Cc: Somalapuram Amaranath <Amaranath.Somalapuram@xxxxxxx> Cc: Christian König <christian.koenig@xxxxxxx> Cc: Matthew Brost <matthew.brost@xxxxxxxxx> Cc: <dri-devel@xxxxxxxxxxxxxxxxxxxxx> Thomas Hellström (8): drm/ttm: Allow TTM LRU list nodes of different types drm/ttm: Slightly clean up LRU list iteration drm/ttm: Use LRU hitches drm/ttm, drm/amdgpu, drm/xe: Consider hitch moves within bulk sublist moves drm/ttm: Provide a generic LRU walker helper drm/ttm: Use the LRU walker helper for swapping drm/ttm: Use the LRU walker for eviction drm/ttm: Balance ttm_resource_cursor_init() and ttm_resource_cursor_fini() drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 + drivers/gpu/drm/ttm/tests/ttm_bo_test.c | 6 +- drivers/gpu/drm/ttm/tests/ttm_resource_test.c | 2 +- drivers/gpu/drm/ttm/ttm_bo.c | 461 ++++++++---------- drivers/gpu/drm/ttm/ttm_bo_util.c | 153 ++++++ drivers/gpu/drm/ttm/ttm_device.c | 29 +- drivers/gpu/drm/ttm/ttm_resource.c | 269 +++++++--- drivers/gpu/drm/xe/xe_vm.c | 4 + include/drm/ttm/ttm_bo.h | 48 +- include/drm/ttm/ttm_resource.h | 109 ++++- 10 files changed, 732 insertions(+), 353 deletions(-) -- 2.44.0
