[PATCH 14/17] ttm: hook up memcg placement flags.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This adds a placement flag that requests that any bo with this
placement flag set gets accounted for memcg if it's a system memory
allocation.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c      | 2 +-
 drivers/gpu/drm/ttm/ttm_bo_util.c | 6 +++---
 drivers/gpu/drm/ttm/ttm_bo_vm.c   | 2 +-
 include/drm/ttm/ttm_placement.h   | 3 +++
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index af04bb8e2c2a..273757974b9f 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -142,7 +142,7 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
 			goto out_err;
 
 		if (mem->mem_type != TTM_PL_SYSTEM) {
-			ret = ttm_bo_populate(bo, false, ctx);
+			ret = ttm_bo_populate(bo, mem->placement & TTM_PL_FLAG_MEMCG, ctx);
 			if (ret)
 				goto out_err;
 		}
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 764d1cf1ecbe..b5521d1bd517 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -167,7 +167,7 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
 	src_man = ttm_manager_type(bdev, src_mem->mem_type);
 	if (ttm && ((ttm->page_flags & TTM_TT_FLAG_SWAPPED) ||
 		    dst_man->use_tt)) {
-		ret = ttm_bo_populate(bo, false, ctx);
+		ret = ttm_bo_populate(bo, dst_mem->placement & TTM_PL_FLAG_MEMCG, ctx);
 		if (ret)
 			return ret;
 	}
@@ -354,7 +354,7 @@ static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo,
 
 	BUG_ON(!ttm);
 
-	ret = ttm_bo_populate(bo, false, &ctx);
+	ret = ttm_bo_populate(bo, mem->placement & TTM_PL_FLAG_MEMCG, &ctx);
 	if (ret)
 		return ret;
 
@@ -511,7 +511,7 @@ int ttm_bo_vmap(struct ttm_buffer_object *bo, struct iosys_map *map)
 		pgprot_t prot;
 		void *vaddr;
 
-		ret = ttm_bo_populate(bo, false, &ctx);
+		ret = ttm_bo_populate(bo, mem->placement & TTM_PL_FLAG_MEMCG, &ctx);
 		if (ret)
 			return ret;
 
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index c5ad447debe3..dddc904f8727 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -226,7 +226,7 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf,
 
 		ttm = bo->ttm;
 		err = ttm_bo_populate(bo,
-				      false,
+				      bo->resource->placement & TTM_PL_FLAG_MEMCG,
 				      &ctx);
 		if (err) {
 			if (err == -EINTR || err == -ERESTARTSYS ||
diff --git a/include/drm/ttm/ttm_placement.h b/include/drm/ttm/ttm_placement.h
index b510a4812609..4e9f07d70483 100644
--- a/include/drm/ttm/ttm_placement.h
+++ b/include/drm/ttm/ttm_placement.h
@@ -70,6 +70,9 @@
 /* Placement is only used during eviction */
 #define TTM_PL_FLAG_FALLBACK	(1 << 4)
 
+/* Placement should account mem cgroup */
+#define TTM_PL_FLAG_MEMCG	(1 << 5)
+
 /**
  * struct ttm_place
  *
-- 
2.49.0