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33#include <linux/debugfs.h>
34#include <linux/seq_file.h>
35#include "drmP.h"
36
37#if defined(CONFIG_DEBUG_FS)
38
39
40
41
42
43static struct drm_info_list drm_debugfs_list[] = {
44 {"name", drm_name_info, 0},
45 {"vm", drm_vm_info, 0},
46 {"clients", drm_clients_info, 0},
47 {"queues", drm_queues_info, 0},
48 {"bufs", drm_bufs_info, 0},
49 {"gem_names", drm_gem_name_info, DRIVER_GEM},
50 {"gem_objects", drm_gem_object_info, DRIVER_GEM},
51#if DRM_DEBUG_CODE
52 {"vma", drm_vma_info, 0},
53#endif
54};
55#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)
56
57
58static int drm_debugfs_open(struct inode *inode, struct file *file)
59{
60 struct drm_info_node *node = inode->i_private;
61
62 return single_open(file, node->info_ent->show, node);
63}
64
65
66static const struct file_operations drm_debugfs_fops = {
67 .owner = THIS_MODULE,
68 .open = drm_debugfs_open,
69 .read = seq_read,
70 .llseek = seq_lseek,
71 .release = single_release,
72};
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86
87int drm_debugfs_create_files(struct drm_info_list *files, int count,
88 struct dentry *root, struct drm_minor *minor)
89{
90 struct drm_device *dev = minor->dev;
91 struct dentry *ent;
92 struct drm_info_node *tmp;
93 char name[64];
94 int i, ret;
95
96 for (i = 0; i < count; i++) {
97 u32 features = files[i].driver_features;
98
99 if (features != 0 &&
100 (dev->driver->driver_features & features) != features)
101 continue;
102
103 tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
104 if (tmp == NULL) {
105 ret = -1;
106 goto fail;
107 }
108 ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO,
109 root, tmp, &drm_debugfs_fops);
110 if (!ent) {
111 DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s/%s\n",
112 name, files[i].name);
113 kfree(tmp);
114 ret = -1;
115 goto fail;
116 }
117
118 tmp->minor = minor;
119 tmp->dent = ent;
120 tmp->info_ent = &files[i];
121 list_add(&(tmp->list), &(minor->debugfs_nodes.list));
122 }
123 return 0;
124
125fail:
126 drm_debugfs_remove_files(files, count, minor);
127 return ret;
128}
129EXPORT_SYMBOL(drm_debugfs_create_files);
130
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141
142int drm_debugfs_init(struct drm_minor *minor, int minor_id,
143 struct dentry *root)
144{
145 struct drm_device *dev = minor->dev;
146 char name[64];
147 int ret;
148
149 INIT_LIST_HEAD(&minor->debugfs_nodes.list);
150 sprintf(name, "%d", minor_id);
151 minor->debugfs_root = debugfs_create_dir(name, root);
152 if (!minor->debugfs_root) {
153 DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name);
154 return -1;
155 }
156
157 ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
158 minor->debugfs_root, minor);
159 if (ret) {
160 debugfs_remove(minor->debugfs_root);
161 minor->debugfs_root = NULL;
162 DRM_ERROR("Failed to create core drm debugfs files\n");
163 return ret;
164 }
165
166 if (dev->driver->debugfs_init) {
167 ret = dev->driver->debugfs_init(minor);
168 if (ret) {
169 DRM_ERROR("DRM: Driver failed to initialize "
170 "/sys/kernel/debug/dri.\n");
171 return ret;
172 }
173 }
174 return 0;
175}
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187
188int drm_debugfs_remove_files(struct drm_info_list *files, int count,
189 struct drm_minor *minor)
190{
191 struct list_head *pos, *q;
192 struct drm_info_node *tmp;
193 int i;
194
195 for (i = 0; i < count; i++) {
196 list_for_each_safe(pos, q, &minor->debugfs_nodes.list) {
197 tmp = list_entry(pos, struct drm_info_node, list);
198 if (tmp->info_ent == &files[i]) {
199 debugfs_remove(tmp->dent);
200 list_del(pos);
201 kfree(tmp);
202 }
203 }
204 }
205 return 0;
206}
207EXPORT_SYMBOL(drm_debugfs_remove_files);
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215
216
217int drm_debugfs_cleanup(struct drm_minor *minor)
218{
219 struct drm_device *dev = minor->dev;
220
221 if (!minor->debugfs_root)
222 return 0;
223
224 if (dev->driver->debugfs_cleanup)
225 dev->driver->debugfs_cleanup(minor);
226
227 drm_debugfs_remove_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES, minor);
228
229 debugfs_remove(minor->debugfs_root);
230 minor->debugfs_root = NULL;
231
232 return 0;
233}
234
235#endif
236
237