diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c b/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c index 4bd6ebfaf425..ab37d36d9cd6 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c @@ -21,6 +21,8 @@ */ #include <linux/debugfs.h> +#include <linux/uaccess.h> + #include "kfd_priv.h" static struct dentry *debugfs_root; @@ -32,6 +34,38 @@ static int kfd_debugfs_open(struct inode *inode, struct file *file) return single_open(file, show, NULL); } +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, @@ -40,6 +74,15 @@ static const struct file_operations kfd_debugfs_fops = { .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) { struct dentry *ent; @@ -65,6 +108,11 @@ void kfd_debugfs_init(void) ent = debugfs_create_file("rls", S_IFREG | 0444, debugfs_root, kfd_debugfs_rls_by_device, &kfd_debugfs_fops); + + ent = debugfs_create_file("hang_hws", S_IFREG | 0644, debugfs_root, + NULL, + &kfd_debugfs_hang_hws_fops); + if (!ent) pr_warn("Failed to create rls in kfd debugfs\n"); } |