109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
|
|
* Copyright 2016-2017 Advanced Micro Devices, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include "kfd_priv.h"
|
|
|
|
static struct dentry *debugfs_root;
|
|
|
|
static int kfd_debugfs_open(struct inode *inode, struct file *file)
|
|
{
|
|
int (*show)(struct seq_file *, void *) = inode->i_private;
|
|
|
|
return single_open(file, show, NULL);
|
|
}
|
|
static int kfd_debugfs_hang_hws_read(struct seq_file *m, void *data)
|
|
{
|
|
seq_printf(m, "echo gpu_id > hang_hws\n");
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t kfd_debugfs_hang_hws_write(struct file *file,
|
|
const char __user *user_buf, size_t size, loff_t *ppos)
|
|
{
|
|
struct kfd_dev *dev;
|
|
char tmp[16];
|
|
uint32_t gpu_id;
|
|
int ret = -EINVAL;
|
|
|
|
memset(tmp, 0, 16);
|
|
if (size >= 16) {
|
|
pr_err("Invalid input for gpu id.\n");
|
|
goto out;
|
|
}
|
|
if (copy_from_user(tmp, user_buf, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
if (kstrtoint(tmp, 10, &gpu_id)) {
|
|
pr_err("Invalid input for gpu id.\n");
|
|
goto out;
|
|
}
|
|
dev = kfd_device_by_id(gpu_id);
|
|
if (dev) {
|
|
kfd_debugfs_hang_hws(dev);
|
|
ret = size;
|
|
} else
|
|
pr_err("Cannot find device %d.\n", gpu_id);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static const struct file_operations kfd_debugfs_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = kfd_debugfs_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static const struct file_operations kfd_debugfs_hang_hws_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = kfd_debugfs_open,
|
|
.read = seq_read,
|
|
.write = kfd_debugfs_hang_hws_write,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
void kfd_debugfs_init(void)
|
|
{
|
|
debugfs_root = debugfs_create_dir("kfd", NULL);
|
|
|
|
debugfs_create_file("mqds", S_IFREG | 0444, debugfs_root,
|
|
kfd_debugfs_mqds_by_process, &kfd_debugfs_fops);
|
|
debugfs_create_file("hqds", S_IFREG | 0444, debugfs_root,
|
|
kfd_debugfs_hqds_by_device, &kfd_debugfs_fops);
|
|
debugfs_create_file("rls", S_IFREG | 0444, debugfs_root,
|
|
kfd_debugfs_rls_by_device, &kfd_debugfs_fops);
|
|
debugfs_create_file("hang_hws", S_IFREG | 0200, debugfs_root,
|
|
kfd_debugfs_hang_hws_read, &kfd_debugfs_hang_hws_fops);
|
|
}
|
|
|
|
void kfd_debugfs_fini(void)
|
|
{
|
|
debugfs_remove_recursive(debugfs_root);
|
|
}
|