drm/amdgpu: cleanup debugfs for amdgpu rings

Use debugfs_create_file_size API for creating ring debugfs, and as its a
NULL returning API, change the return type for amdgpu_debugfs_ring_init
API as well. Also cleanup surrounding code.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 60f46a4..97d88f3 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1734,9 +1734,7 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
                if (!ring)
                        continue;
 
-               if (amdgpu_debugfs_ring_init(adev, ring)) {
-                       DRM_ERROR("Failed to register debugfs file for rings !\n");
-               }
+               amdgpu_debugfs_ring_init(adev, ring);
        }
 
        amdgpu_ras_debugfs_create_all(adev);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 0554576..ab2351b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -415,26 +415,20 @@ static const struct file_operations amdgpu_debugfs_ring_fops = {
 
 #endif
 
-int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
-                            struct amdgpu_ring *ring)
+void amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+                             struct amdgpu_ring *ring)
 {
 #if defined(CONFIG_DEBUG_FS)
        struct drm_minor *minor = adev_to_drm(adev)->primary;
-       struct dentry *ent, *root = minor->debugfs_root;
+       struct dentry *root = minor->debugfs_root;
        char name[32];
 
        sprintf(name, "amdgpu_ring_%s", ring->name);
+       debugfs_create_file_size(name, S_IFREG | S_IRUGO, root, ring,
+                                &amdgpu_debugfs_ring_fops,
+                                ring->ring_size + 12);
 
-       ent = debugfs_create_file(name,
-                                 S_IFREG | S_IRUGO, root,
-                                 ring, &amdgpu_debugfs_ring_fops);
-       if (IS_ERR(ent))
-               return PTR_ERR(ent);
-
-       i_size_write(ent->d_inode, ring->ring_size + 12);
-       ring->ent = ent;
 #endif
-       return 0;
 }
 
 /**

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 88d80eb..4d380e7 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -253,10 +253,6 @@ struct amdgpu_ring {
        bool                    has_compute_vm_bug;
        bool                    no_scheduler;
        int                     hw_prio;
-
-#if defined(CONFIG_DEBUG_FS)
-       struct dentry *ent;
-#endif
 };
 
 #define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))
@@ -356,8 +352,6 @@ static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
 
 int amdgpu_ring_test_helper(struct amdgpu_ring *ring);
 
-int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
-                            struct amdgpu_ring *ring);
-void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring);
-
+void amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+                             struct amdgpu_ring *ring);
 #endif