Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 373bd4c..eab0f26 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -24,18 +24,23 @@
*/
#include <linux/debugfs.h>
+#include <linux/export.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
-#include <linux/export.h>
+#include <linux/uaccess.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_auth.h>
#include <drm/drm_client.h>
#include <drm/drm_debugfs.h>
+#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
#include <drm/drm_edid.h>
-#include <drm/drm_atomic.h>
-#include <drm/drmP.h>
+#include <drm/drm_file.h>
+#include <drm/drm_gem.h>
-#include "drm_internal.h"
#include "drm_crtc_internal.h"
+#include "drm_internal.h"
#if defined(CONFIG_DEBUG_FS)
@@ -43,6 +48,93 @@
* Initialization, etc.
**************************************************/
+static int drm_name_info(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_minor *minor = node->minor;
+ struct drm_device *dev = minor->dev;
+ struct drm_master *master;
+
+ mutex_lock(&dev->master_mutex);
+ master = dev->master;
+ seq_printf(m, "%s", dev->driver->name);
+ if (dev->dev)
+ seq_printf(m, " dev=%s", dev_name(dev->dev));
+ if (master && master->unique)
+ seq_printf(m, " master=%s", master->unique);
+ if (dev->unique)
+ seq_printf(m, " unique=%s", dev->unique);
+ seq_printf(m, "\n");
+ mutex_unlock(&dev->master_mutex);
+
+ return 0;
+}
+
+static int drm_clients_info(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_device *dev = node->minor->dev;
+ struct drm_file *priv;
+ kuid_t uid;
+
+ seq_printf(m,
+ "%20s %5s %3s master a %5s %10s\n",
+ "command",
+ "pid",
+ "dev",
+ "uid",
+ "magic");
+
+ /* dev->filelist is sorted youngest first, but we want to present
+ * oldest first (i.e. kernel, servers, clients), so walk backwardss.
+ */
+ mutex_lock(&dev->filelist_mutex);
+ list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
+ struct task_struct *task;
+
+ rcu_read_lock(); /* locks pid_task()->comm */
+ task = pid_task(priv->pid, PIDTYPE_PID);
+ uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
+ seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n",
+ task ? task->comm : "<unknown>",
+ pid_vnr(priv->pid),
+ priv->minor->index,
+ drm_is_current_master(priv) ? 'y' : 'n',
+ priv->authenticated ? 'y' : 'n',
+ from_kuid_munged(seq_user_ns(m), uid),
+ priv->magic);
+ rcu_read_unlock();
+ }
+ mutex_unlock(&dev->filelist_mutex);
+ return 0;
+}
+
+static int drm_gem_one_name_info(int id, void *ptr, void *data)
+{
+ struct drm_gem_object *obj = ptr;
+ struct seq_file *m = data;
+
+ seq_printf(m, "%6d %8zd %7d %8d\n",
+ obj->name, obj->size,
+ obj->handle_count,
+ kref_read(&obj->refcount));
+ return 0;
+}
+
+static int drm_gem_name_info(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_device *dev = node->minor->dev;
+
+ seq_printf(m, " name size handles refcount\n");
+
+ mutex_lock(&dev->object_name_lock);
+ idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
+ mutex_unlock(&dev->object_name_lock);
+
+ return 0;
+}
+
static const struct drm_info_list drm_debugfs_list[] = {
{"name", drm_name_info, 0},
{"clients", drm_clients_info, 0},
@@ -84,9 +176,8 @@
struct dentry *root, struct drm_minor *minor)
{
struct drm_device *dev = minor->dev;
- struct dentry *ent;
struct drm_info_node *tmp;
- int i, ret;
+ int i;
for (i = 0; i < count; i++) {
u32 features = files[i].driver_features;
@@ -96,22 +187,13 @@
continue;
tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
- if (tmp == NULL) {
- ret = -1;
- goto fail;
- }
- ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO,
- root, tmp, &drm_debugfs_fops);
- if (!ent) {
- DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/%s\n",
- root, files[i].name);
- kfree(tmp);
- ret = -1;
- goto fail;
- }
+ if (tmp == NULL)
+ continue;
tmp->minor = minor;
- tmp->dent = ent;
+ tmp->dent = debugfs_create_file(files[i].name,
+ S_IFREG | S_IRUGO, root, tmp,
+ &drm_debugfs_fops);
tmp->info_ent = &files[i];
mutex_lock(&minor->debugfs_lock);
@@ -119,10 +201,6 @@
mutex_unlock(&minor->debugfs_lock);
}
return 0;
-
-fail:
- drm_debugfs_remove_files(files, count, minor);
- return ret;
}
EXPORT_SYMBOL(drm_debugfs_create_files);
@@ -137,10 +215,6 @@
mutex_init(&minor->debugfs_lock);
sprintf(name, "%d", minor_id);
minor->debugfs_root = debugfs_create_dir(name, root);
- if (!minor->debugfs_root) {
- DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name);
- return -1;
- }
ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
minor->debugfs_root, minor);
@@ -221,17 +295,15 @@
mutex_unlock(&minor->debugfs_lock);
}
-int drm_debugfs_cleanup(struct drm_minor *minor)
+void drm_debugfs_cleanup(struct drm_minor *minor)
{
if (!minor->debugfs_root)
- return 0;
+ return;
drm_debugfs_remove_all_files(minor);
debugfs_remove_recursive(minor->debugfs_root);
minor->debugfs_root = NULL;
-
- return 0;
}
static int connector_show(struct seq_file *m, void *data)
@@ -349,38 +421,24 @@
.write = connector_write
};
-int drm_debugfs_connector_add(struct drm_connector *connector)
+void drm_debugfs_connector_add(struct drm_connector *connector)
{
struct drm_minor *minor = connector->dev->primary;
- struct dentry *root, *ent;
+ struct dentry *root;
if (!minor->debugfs_root)
- return -1;
+ return;
root = debugfs_create_dir(connector->name, minor->debugfs_root);
- if (!root)
- return -ENOMEM;
-
connector->debugfs_entry = root;
/* force */
- ent = debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector,
- &drm_connector_fops);
- if (!ent)
- goto error;
+ debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector,
+ &drm_connector_fops);
/* edid */
- ent = debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root,
- connector, &drm_edid_fops);
- if (!ent)
- goto error;
-
- return 0;
-
-error:
- debugfs_remove_recursive(connector->debugfs_entry);
- connector->debugfs_entry = NULL;
- return -ENOMEM;
+ debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, connector,
+ &drm_edid_fops);
}
void drm_debugfs_connector_remove(struct drm_connector *connector)
@@ -393,7 +451,7 @@
connector->debugfs_entry = NULL;
}
-int drm_debugfs_crtc_add(struct drm_crtc *crtc)
+void drm_debugfs_crtc_add(struct drm_crtc *crtc)
{
struct drm_minor *minor = crtc->dev->primary;
struct dentry *root;
@@ -401,23 +459,14 @@
name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
if (!name)
- return -ENOMEM;
+ return;
root = debugfs_create_dir(name, minor->debugfs_root);
kfree(name);
- if (!root)
- return -ENOMEM;
crtc->debugfs_entry = root;
- if (drm_debugfs_crtc_crc_add(crtc))
- goto error;
-
- return 0;
-
-error:
- drm_debugfs_crtc_remove(crtc);
- return -ENOMEM;
+ drm_debugfs_crtc_crc_add(crtc);
}
void drm_debugfs_crtc_remove(struct drm_crtc *crtc)