1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/**
* \file drm_info.c
* DRM info file implementations
*
* \author Ben Gamari <bgamari@gmail.com>
*/
/*
* Created: Sun Dec 21 13:09:50 2008 by bgamari@gmail.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* Copyright 2008 Ben Gamari <bgamari@gmail.com>
* All Rights Reserved.
*
* 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 (including the next
* paragraph) 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
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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/seq_file.h>
#include <drm/drmP.h>
#include <drm/drm_gem.h>
#include "drm_internal.h"
#include "drm_legacy.h"
/**
* Called when "/proc/dri/.../name" is read.
*
* Prints the device name together with the bus id if available.
*/
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;
if (!master)
goto out_unlock;
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");
out_unlock:
mutex_unlock(&dev->master_mutex);
return 0;
}
/**
* Called when "/proc/dri/.../clients" is read.
*
*/
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,
atomic_read(&obj->refcount.refcount));
return 0;
}
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;
}
|
