Commit 0471ed20 authored by Thomas Hellström's avatar Thomas Hellström
Browse files

drm/xe: Use drm_gpusvm_scan_mm() 



Use drm_gpusvm_scan_mm() to avoid unnecessarily calling into
drm_pagemap_populate_mm();

v3:
- New patch.

Signed-off-by: default avatarThomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: default avatarMatthew Brost <matthew.brost@intel.com>
Reviewed-by: default avatarHimal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patch.msgid.link/20251219113320.183860-22-thomas.hellstrom@linux.intel.com
parent f1d08a58

drivers/gpu/drm/xe/xe_svm.c

+13 −1
Original line number Diff line number Diff line
@@ -1590,11 +1590,23 @@ struct drm_pagemap *xe_vma_resolve_pagemap(struct xe_vma *vma, struct xe_tile *t 
int xe_svm_alloc_vram(struct xe_svm_range *range, const struct drm_gpusvm_ctx *ctx,

		      struct drm_pagemap *dpagemap)

{

	struct xe_device *xe = range_to_vm(&range->base)->xe;

	struct xe_vm *vm = range_to_vm(&range->base);

	enum drm_gpusvm_scan_result migration_state;

	struct xe_device *xe = vm->xe;



	xe_assert(range_to_vm(&range->base)->xe, range->base.pages.flags.migrate_devmem);

	range_debug(range, "ALLOCATE VRAM");



	migration_state = drm_gpusvm_scan_mm(&range->base,

					     xe_svm_private_page_owner(vm, false),

					     dpagemap->pagemap);



	if (migration_state == DRM_GPUSVM_SCAN_EQUAL) {

		if (IS_ENABLED(CONFIG_DRM_XE_DEBUG_VM))

			drm_dbg(dpagemap->drm, "Already migrated!\n");

		return 0;

	}



	if (IS_ENABLED(CONFIG_DRM_XE_DEBUG_VM))

		drm_dbg(&xe->drm, "Request migration to device memory on \"%s\".\n",

			dpagemap->drm->unique);