1 /*
2  * Copyright 2016-2017 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  */
22 
23 #include <linux/debugfs.h>
24 #include "kfd_priv.h"
25 
26 static struct dentry *debugfs_root;
27 
28 static int kfd_debugfs_open(struct inode *inode, struct file *file)
29 {
30 	int (*show)(struct seq_file *, void *) = inode->i_private;
31 
32 	return single_open(file, show, NULL);
33 }
34 
35 static const struct file_operations kfd_debugfs_fops = {
36 	.owner = THIS_MODULE,
37 	.open = kfd_debugfs_open,
38 	.read = seq_read,
39 	.llseek = seq_lseek,
40 	.release = single_release,
41 };
42 
43 void kfd_debugfs_init(void)
44 {
45 	struct dentry *ent;
46 
47 	debugfs_root = debugfs_create_dir("kfd", NULL);
48 	if (!debugfs_root || debugfs_root == ERR_PTR(-ENODEV)) {
49 		pr_warn("Failed to create kfd debugfs dir\n");
50 		return;
51 	}
52 
53 	ent = debugfs_create_file("mqds", S_IFREG | 0444, debugfs_root,
54 				  kfd_debugfs_mqds_by_process,
55 				  &kfd_debugfs_fops);
56 	if (!ent)
57 		pr_warn("Failed to create mqds in kfd debugfs\n");
58 
59 	ent = debugfs_create_file("hqds", S_IFREG | 0444, debugfs_root,
60 				  kfd_debugfs_hqds_by_device,
61 				  &kfd_debugfs_fops);
62 	if (!ent)
63 		pr_warn("Failed to create hqds in kfd debugfs\n");
64 
65 	ent = debugfs_create_file("rls", S_IFREG | 0444, debugfs_root,
66 				  kfd_debugfs_rls_by_device,
67 				  &kfd_debugfs_fops);
68 	if (!ent)
69 		pr_warn("Failed to create rls in kfd debugfs\n");
70 }
71 
72 void kfd_debugfs_fini(void)
73 {
74 	debugfs_remove_recursive(debugfs_root);
75 }
76