On 25/10/2021 14:00, Arunpravin wrote:
add drm_buddy_free_unused_pages() support on
contiguous allocation
Signed-off-by: Arunpravin <Arunpravin.PaneerSelvam@xxxxxxx>
---
drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
index 963468228392..162947af8e04 100644
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
@@ -98,6 +98,14 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
if (unlikely(err))
goto err_free_blocks;
+ if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
+ err = drm_buddy_free_unused_pages(mm, (uint64_t)n_pages << PAGE_SHIFT,
+ &bman_res->blocks);
+
+ if (unlikely(err))
+ goto err_free_blocks;
That needs some locking, mark_free/mark_split are all globally visible.
Some concurrent user might steal the block, or worse.
+ }
+
*res = &bman_res->base;
return 0;
