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These helpers > consolidate block allocation with visible-size tracking and > block->private tagging, making them reusable by the upcoming VRAM > page offline reservation path. > > No functional change. Reviewed-by: Himal Prasad Ghimiray > > Signed-off-by: Tejas Upadhyay > --- > drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 82 +++++++++++++++++----------- > 1 file changed, 51 insertions(+), 31 deletions(-) > > diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c > index 5ab5dfdb183c..49eeec90a470 100644 > --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c > +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c > @@ -46,6 +46,40 @@ static inline bool xe_is_vram_mgr_blocks_contiguous(struct gpu_buddy *mm, > return true; > } > > +static int xe_ttm_vram_buddy_alloc(struct xe_ttm_vram_mgr *mgr, u64 start, > + u64 end, u64 size, u64 min_page_size, > + struct list_head *blocks, unsigned long flags, > + void *priv, u64 *used_visible) > +{ > + struct gpu_buddy *mm = &mgr->mm; > + struct gpu_buddy_block *block; > + int err; > + > + err = gpu_buddy_alloc_blocks(mm, start, end, size, min_page_size, blocks, flags); > + if (err) > + return err; > + > + list_for_each_entry(block, blocks, link) > + block->private = priv; > + > + if (end <= mgr->visible_size) { > + *used_visible = size; > + } else { > + list_for_each_entry(block, blocks, link) { > + u64 blk_start = gpu_buddy_block_offset(block); > + > + if (blk_start < mgr->visible_size) { > + u64 blk_end = blk_start + gpu_buddy_block_size(mm, block); > + > + *used_visible += min(blk_end, mgr->visible_size) - blk_start; > + } > + } > + } > + > + mgr->visible_avail -= *used_visible; > + return 0; > +} > + > static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man, > struct ttm_buffer_object *tbo, > const struct ttm_place *place, > @@ -54,7 +88,6 @@ static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man, > struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man); > struct xe_ttm_vram_mgr_resource *vres; > struct gpu_buddy *mm = &mgr->mm; > - struct gpu_buddy_block *block; > u64 size, min_page_size; > unsigned long lpfn; > int err; > @@ -115,32 +148,12 @@ static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man, > goto error_unlock; > } > > - err = gpu_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT, > - (u64)lpfn << PAGE_SHIFT, size, > - min_page_size, &vres->blocks, vres->flags); > + err = xe_ttm_vram_buddy_alloc(mgr, (u64)place->fpfn << PAGE_SHIFT, > + (u64)lpfn << PAGE_SHIFT, size, > + min_page_size, &vres->blocks, vres->flags, > + tbo, &vres->used_visible_size); > if (err) > goto error_unlock; > - > - if (lpfn <= mgr->visible_size >> PAGE_SHIFT) { > - vres->used_visible_size = size; > - } else { > - struct gpu_buddy_block *block; > - > - list_for_each_entry(block, &vres->blocks, link) { > - u64 start = gpu_buddy_block_offset(block); > - > - if (start < mgr->visible_size) { > - u64 end = start + gpu_buddy_block_size(mm, block); > - > - vres->used_visible_size += > - min(end, mgr->visible_size) - start; > - } > - } > - } > - > - mgr->visible_avail -= vres->used_visible_size; > - list_for_each_entry(block, &vres->blocks, link) > - block->private = tbo; > mutex_unlock(&mgr->lock); > > if (!(vres->base.placement & TTM_PL_FLAG_CONTIGUOUS) && > @@ -172,20 +185,27 @@ static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man, > return err; > } > > +static void xe_ttm_vram_buddy_free(struct xe_ttm_vram_mgr *mgr, > + struct list_head *blocks, > + u64 used_visible) > +{ > + struct gpu_buddy_block *block; > + > + list_for_each_entry(block, blocks, link) > + block->private = NULL; > + gpu_buddy_free_list(&mgr->mm, blocks, 0); > + mgr->visible_avail += used_visible; > +} > + > static void xe_ttm_vram_mgr_del(struct ttm_resource_manager *man, > struct ttm_resource *res) > { > struct xe_ttm_vram_mgr_resource *vres = > to_xe_ttm_vram_mgr_resource(res); > struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man); > - struct gpu_buddy *mm = &mgr->mm; > - struct gpu_buddy_block *block; > > mutex_lock(&mgr->lock); > - list_for_each_entry(block, &vres->blocks, link) > - block->private = NULL; > - gpu_buddy_free_list(mm, &vres->blocks, 0); > - mgr->visible_avail += vres->used_visible_size; > + xe_ttm_vram_buddy_free(mgr, &vres->blocks, vres->used_visible_size); > mutex_unlock(&mgr->lock); > > ttm_resource_fini(man, res);