xe_bo_set_purgeable_state
xe_bo_set_purgeable_state(xe_bo,
xe_bo_set_purgeable_state(bo, XE_MADV_PURGEABLE_PURGED);
void xe_bo_set_purgeable_state(struct xe_bo *bo, enum xe_madv_purgeable_state new_state);
xe_bo_set_purgeable_state(bo, XE_MADV_PURGEABLE_WILLNEED);
xe_bo_set_purgeable_state(bo, XE_MADV_PURGEABLE_DONTNEED);