2 * Copyright 2016-2017 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
23 #include <linux/debugfs.h>
24 #include <linux/uaccess.h>
28 static struct dentry *debugfs_root;
30 static int kfd_debugfs_open(struct inode *inode, struct file *file)
32 int (*show)(struct seq_file *, void *) = inode->i_private;
34 return single_open(file, show, NULL);
36 static int kfd_debugfs_hang_hws_read(struct seq_file *m, void *data)
38 seq_printf(m, "echo gpu_id > hang_hws\n");
42 static ssize_t kfd_debugfs_hang_hws_write(struct file *file,
43 const char __user *user_buf, size_t size, loff_t *ppos)
52 pr_err("Invalid input for gpu id.\n");
55 if (copy_from_user(tmp, user_buf, size)) {
59 if (kstrtoint(tmp, 10, &gpu_id)) {
60 pr_err("Invalid input for gpu id.\n");
63 dev = kfd_device_by_id(gpu_id);
65 kfd_debugfs_hang_hws(dev);
68 pr_err("Cannot find device %d.\n", gpu_id);
74 static const struct file_operations kfd_debugfs_fops = {
76 .open = kfd_debugfs_open,
79 .release = single_release,
82 static const struct file_operations kfd_debugfs_hang_hws_fops = {
84 .open = kfd_debugfs_open,
86 .write = kfd_debugfs_hang_hws_write,
88 .release = single_release,
91 void kfd_debugfs_init(void)
93 debugfs_root = debugfs_create_dir("kfd", NULL);
95 debugfs_create_file("mqds", S_IFREG | 0444, debugfs_root,
96 kfd_debugfs_mqds_by_process, &kfd_debugfs_fops);
97 debugfs_create_file("hqds", S_IFREG | 0444, debugfs_root,
98 kfd_debugfs_hqds_by_device, &kfd_debugfs_fops);
99 debugfs_create_file("rls", S_IFREG | 0444, debugfs_root,
100 kfd_debugfs_rls_by_device, &kfd_debugfs_fops);
101 debugfs_create_file("hang_hws", S_IFREG | 0200, debugfs_root,
102 kfd_debugfs_hang_hws_read, &kfd_debugfs_hang_hws_fops);
105 void kfd_debugfs_fini(void)
107 debugfs_remove_recursive(debugfs_root);