This source file includes following definitions.
- sync_timeline_debug_add
- sync_timeline_debug_remove
- sync_file_debug_add
- sync_file_debug_remove
- sync_status_str
- sync_print_fence
- sync_print_obj
- sync_print_sync_file
- sync_info_debugfs_show
- sync_debugfs_init
1
2
3
4
5
6
7
8 #include <linux/debugfs.h>
9 #include "sync_debug.h"
10
11 static struct dentry *dbgfs;
12
13 static LIST_HEAD(sync_timeline_list_head);
14 static DEFINE_SPINLOCK(sync_timeline_list_lock);
15 static LIST_HEAD(sync_file_list_head);
16 static DEFINE_SPINLOCK(sync_file_list_lock);
17
18 void sync_timeline_debug_add(struct sync_timeline *obj)
19 {
20 unsigned long flags;
21
22 spin_lock_irqsave(&sync_timeline_list_lock, flags);
23 list_add_tail(&obj->sync_timeline_list, &sync_timeline_list_head);
24 spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
25 }
26
27 void sync_timeline_debug_remove(struct sync_timeline *obj)
28 {
29 unsigned long flags;
30
31 spin_lock_irqsave(&sync_timeline_list_lock, flags);
32 list_del(&obj->sync_timeline_list);
33 spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
34 }
35
36 void sync_file_debug_add(struct sync_file *sync_file)
37 {
38 unsigned long flags;
39
40 spin_lock_irqsave(&sync_file_list_lock, flags);
41 list_add_tail(&sync_file->sync_file_list, &sync_file_list_head);
42 spin_unlock_irqrestore(&sync_file_list_lock, flags);
43 }
44
45 void sync_file_debug_remove(struct sync_file *sync_file)
46 {
47 unsigned long flags;
48
49 spin_lock_irqsave(&sync_file_list_lock, flags);
50 list_del(&sync_file->sync_file_list);
51 spin_unlock_irqrestore(&sync_file_list_lock, flags);
52 }
53
54 static const char *sync_status_str(int status)
55 {
56 if (status < 0)
57 return "error";
58
59 if (status > 0)
60 return "signaled";
61
62 return "active";
63 }
64
65 static void sync_print_fence(struct seq_file *s,
66 struct dma_fence *fence, bool show)
67 {
68 struct sync_timeline *parent = dma_fence_parent(fence);
69 int status;
70
71 status = dma_fence_get_status_locked(fence);
72
73 seq_printf(s, " %s%sfence %s",
74 show ? parent->name : "",
75 show ? "_" : "",
76 sync_status_str(status));
77
78 if (test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags)) {
79 struct timespec64 ts64 =
80 ktime_to_timespec64(fence->timestamp);
81
82 seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
83 }
84
85 if (fence->ops->timeline_value_str &&
86 fence->ops->fence_value_str) {
87 char value[64];
88 bool success;
89
90 fence->ops->fence_value_str(fence, value, sizeof(value));
91 success = strlen(value);
92
93 if (success) {
94 seq_printf(s, ": %s", value);
95
96 fence->ops->timeline_value_str(fence, value,
97 sizeof(value));
98
99 if (strlen(value))
100 seq_printf(s, " / %s", value);
101 }
102 }
103
104 seq_putc(s, '\n');
105 }
106
107 static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
108 {
109 struct list_head *pos;
110
111 seq_printf(s, "%s: %d\n", obj->name, obj->value);
112
113 spin_lock_irq(&obj->lock);
114 list_for_each(pos, &obj->pt_list) {
115 struct sync_pt *pt = container_of(pos, struct sync_pt, link);
116 sync_print_fence(s, &pt->base, false);
117 }
118 spin_unlock_irq(&obj->lock);
119 }
120
121 static void sync_print_sync_file(struct seq_file *s,
122 struct sync_file *sync_file)
123 {
124 char buf[128];
125 int i;
126
127 seq_printf(s, "[%p] %s: %s\n", sync_file,
128 sync_file_get_name(sync_file, buf, sizeof(buf)),
129 sync_status_str(dma_fence_get_status(sync_file->fence)));
130
131 if (dma_fence_is_array(sync_file->fence)) {
132 struct dma_fence_array *array = to_dma_fence_array(sync_file->fence);
133
134 for (i = 0; i < array->num_fences; ++i)
135 sync_print_fence(s, array->fences[i], true);
136 } else {
137 sync_print_fence(s, sync_file->fence, true);
138 }
139 }
140
141 static int sync_info_debugfs_show(struct seq_file *s, void *unused)
142 {
143 struct list_head *pos;
144
145 seq_puts(s, "objs:\n--------------\n");
146
147 spin_lock_irq(&sync_timeline_list_lock);
148 list_for_each(pos, &sync_timeline_list_head) {
149 struct sync_timeline *obj =
150 container_of(pos, struct sync_timeline,
151 sync_timeline_list);
152
153 sync_print_obj(s, obj);
154 seq_putc(s, '\n');
155 }
156 spin_unlock_irq(&sync_timeline_list_lock);
157
158 seq_puts(s, "fences:\n--------------\n");
159
160 spin_lock_irq(&sync_file_list_lock);
161 list_for_each(pos, &sync_file_list_head) {
162 struct sync_file *sync_file =
163 container_of(pos, struct sync_file, sync_file_list);
164
165 sync_print_sync_file(s, sync_file);
166 seq_putc(s, '\n');
167 }
168 spin_unlock_irq(&sync_file_list_lock);
169 return 0;
170 }
171
172 DEFINE_SHOW_ATTRIBUTE(sync_info_debugfs);
173
174 static __init int sync_debugfs_init(void)
175 {
176 dbgfs = debugfs_create_dir("sync", NULL);
177
178
179
180
181
182
183 debugfs_create_file_unsafe("info", 0444, dbgfs, NULL,
184 &sync_info_debugfs_fops);
185 debugfs_create_file_unsafe("sw_sync", 0644, dbgfs, NULL,
186 &sw_sync_debugfs_fops);
187
188 return 0;
189 }
190 late_initcall(sync_debugfs_init);