Received-SPF: pass (google.com: domain of linux-kernel+bounces-33280-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Cc: "Wang, Beyond" <Wang.Beyond@amd.com>, Wang@web.codeaurora.org,
	=?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>,
	Alex Deucher <alexander.deucher@amd.com>,
	Sasha Levin <sashal@kernel.org>, Xinhui.Pan@amd.com,
	airlied@gmail.com, daniel@ffwll.ch, Felix.Kuehling@amd.com,
	Philip.Yang@amd.com, guchun.chen@amd.com,
	Arunpravin.PaneerSelvam@amd.com, Hongkun.Zhang@amd.com,
	marek.olsak@amd.com, pierre-eric.pelloux-prayer@amd.com,
	Jun.Ma2@amd.com, maarten.lankhorst@linux.intel.com,
	mukul.joshi@amd.com, lijo.lazar@amd.com,
	srinivasan.shanmugam@amd.com, rajneesh.bhardwaj@amd.com,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 6.7 58/88] drm/amdgpu: fix ftrace event amdgpu_bo_move always move on same heap
Date: Mon, 22 Jan 2024 09:51:31 -0500
Message-ID: <20240122145608.990137-58-sashal@kernel.org>
In-Reply-To: <20240122145608.990137-1-sashal@kernel.org>
References: <20240122145608.990137-1-sashal@kernel.org>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: "Wang, Beyond" <Wang.Beyond@amd.com>

[ Upstream commit 94aeb4117343d072e3a35b9595bcbfc0058ee724 ]

Issue: during evict or validate happened on amdgpu_bo, the 'from' and
'to' is always same in ftrace event of amdgpu_bo_move

where calling the 'trace_amdgpu_bo_move', the comment says move_notify
is called before move happens, but actually it is called after move
happens, here the new_mem is same as bo->resource

Fix: move trace_amdgpu_bo_move from move_notify to amdgpu_bo_move

Signed-off-by: Wang, Beyond <Wang.Beyond@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 13 +------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h |  4 +---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c    |  5 +++--
 3 files changed, 5 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 5ad03f2afdb4..425cebcc5cbf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1245,19 +1245,15 @@ int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
  * amdgpu_bo_move_notify - notification about a memory move
  * @bo: pointer to a buffer object
  * @evict: if this move is evicting the buffer from the graphics address space
- * @new_mem: new information of the bufer object
  *
  * Marks the corresponding &amdgpu_bo buffer object as invalid, also performs
  * bookkeeping.
  * TTM driver callback which is called when ttm moves a buffer.
  */
-void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
-			   bool evict,
-			   struct ttm_resource *new_mem)
+void amdgpu_bo_move_notify(struct ttm_buffer_object *bo, bool evict)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 	struct amdgpu_bo *abo;
-	struct ttm_resource *old_mem = bo->resource;
 
 	if (!amdgpu_bo_is_amdgpu_bo(bo))
 		return;
@@ -1274,13 +1270,6 @@ void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
 	/* remember the eviction */
 	if (evict)
 		atomic64_inc(&adev->num_evictions);
-
-	/* update statistics */
-	if (!new_mem)
-		return;
-
-	/* move_notify is called before move happens */
-	trace_amdgpu_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
 }
 
 void amdgpu_bo_get_memory(struct amdgpu_bo *bo,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index d28e21baef16..a3ea8a82db23 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -344,9 +344,7 @@ int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
 			   size_t buffer_size, uint32_t *metadata_size,
 			   uint64_t *flags);
-void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
-			   bool evict,
-			   struct ttm_resource *new_mem);
+void amdgpu_bo_move_notify(struct ttm_buffer_object *bo, bool evict);
 void amdgpu_bo_release_notify(struct ttm_buffer_object *bo);
 vm_fault_t amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index ab4a762aed5b..75c9fd2c6c2a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -545,10 +545,11 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict,
 			return r;
 	}
 
+	trace_amdgpu_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
 out:
 	/* update statistics */
 	atomic64_add(bo->base.size, &adev->num_bytes_moved);
-	amdgpu_bo_move_notify(bo, evict, new_mem);
+	amdgpu_bo_move_notify(bo, evict);
 	return 0;
 }
 
@@ -1553,7 +1554,7 @@ static int amdgpu_ttm_access_memory(struct ttm_buffer_object *bo,
 static void
 amdgpu_bo_delete_mem_notify(struct ttm_buffer_object *bo)
 {
-	amdgpu_bo_move_notify(bo, false, NULL);
+	amdgpu_bo_move_notify(bo, false);
 }
 
 static struct ttm_device_funcs amdgpu_bo_driver = {
-- 
2.43.0