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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Copyright 2020 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 "igt.h"
#include "igt_amd.h"
#include <fcntl.h>
IGT_TEST_DESCRIPTION("Test checking memory leaks with suspend-resume and connector hotplug");
/* Common test data. */
typedef struct data {
igt_display_t display;
igt_plane_t *primary;
igt_output_t *output;
igt_pipe_t *pipe;
drmModeModeInfo *mode;
enum pipe pipe_id;
int fd;
int w;
int h;
} data_t;
/* Common test setup. */
static void test_init(data_t *data)
{
igt_display_t *display = &data->display;
/* It doesn't matter which pipe we choose on amdpgu. */
data->pipe_id = PIPE_A;
data->pipe = &data->display.pipes[data->pipe_id];
igt_display_reset(display);
/* find a connected output */
data->output = NULL;
for (int i=0; i < data->display.n_outputs; ++i) {
drmModeConnector *connector = data->display.outputs[i].config.connector;
if (connector->connection == DRM_MODE_CONNECTED) {
data->output = &data->display.outputs[i];
}
}
igt_assert_f(data->output, "Requires connected output\n");
data->mode = igt_output_get_mode(data->output);
igt_assert(data->mode);
data->primary =
igt_pipe_get_plane_type(data->pipe, DRM_PLANE_TYPE_PRIMARY);
igt_output_set_pipe(data->output, data->pipe_id);
data->w = data->mode->hdisplay;
data->h = data->mode->vdisplay;
}
/* Common test cleanup. */
static void test_fini(data_t *data)
{
igt_display_reset(&data->display);
}
/* return True if scan successfully written to kmemleak */
static bool send_scan_memleak(void)
{
FILE *fp;
const char *cmd = "scan";
fp = fopen("/sys/kernel/debug/kmemleak", "r+");
if (!fp) return false;
if(fwrite(cmd, 1, strlen(cmd), fp) != strlen(cmd)) {
fclose(fp);
return false;
}
fclose(fp);
return true;
}
/* return True if clear successfully sent to kmemleak */
static bool send_clear_memleak(void)
{
FILE *fp;
const char *cmd = "clear";
fp = fopen("/sys/kernel/debug/kmemleak", "r+");
if (!fp) return false;
if(fwrite(cmd, 1, strlen(cmd), fp) != strlen(cmd)) {
fclose(fp);
return false;
}
fclose(fp);
return true;
}
/* return true if kmemleak is enabled and then clear earlier leak records */
static bool clear_memleak(data_t *data)
{
/* Need to scan + clear twice to properly clear buffer or else leaks
* from modprobe or other tests may appear
*/
if (!send_scan_memleak() | !send_clear_memleak())
return false;
if (!send_scan_memleak() | !send_clear_memleak())
return false;
return true;
}
/* return true if kmemleak did not pick up any memory leaks */
static bool check_memleak(data_t *data)
{
FILE *fp;
const char *buf[1];
const char *cmd = "scan";
char read_buf[1024];
fp = fopen("/sys/kernel/debug/kmemleak", "r+");
igt_assert_f(fp, "cannot open /sys/kernel/debug/kmemleak for reading\n");
/* trigger an immediate scan on memory leak */
igt_assert_f(fwrite(cmd, 1, strlen(cmd), fp) == strlen(cmd),
"fail to trigger a scan for memory leak\n");
/* read back to see if any leak */
if (fread(buf, 1, 1, fp) == 0) {
fclose(fp);
return true;
}
/* Dump contents of kmemleak */
fseek(fp, 0L, SEEK_SET);
while (fgets(read_buf, sizeof(read_buf), fp) != NULL) {
igt_info("%s", read_buf);
}
fclose(fp);
return false;
}
static void test_suspend_resume(data_t *data)
{
igt_display_t *display = &data->display;
igt_fb_t rfb;
test_init(data);
if(!clear_memleak(data)) {
igt_skip("kmemleak is not enabled for this kernel\n");
}
igt_create_pattern_fb(data->fd, data->w, data->h, DRM_FORMAT_XRGB8888, 0, &rfb);
igt_plane_set_fb(data->primary, &rfb);
igt_display_commit_atomic(display, DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
igt_system_suspend_autoresume(SUSPEND_STATE_MEM, SUSPEND_TEST_NONE);
igt_assert_f(check_memleak(data), "memory leak detected\n");
igt_remove_fb(data->fd, &rfb);
test_fini(data);
}
static void test_hotplug(data_t *data)
{
igt_display_t *display = &data->display;
igt_fb_t rfb;
test_init(data);
igt_amd_require_hpd(&data->display, data->fd);
if(!clear_memleak(data)) {
igt_skip("kmemleak is not enabled for this kernel\n");
}
igt_create_pattern_fb(data->fd, data->w, data->h, DRM_FORMAT_XRGB8888, 0, &rfb);
igt_plane_set_fb(data->primary, &rfb);
igt_display_commit_atomic(display, DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
igt_amd_trigger_hotplug(data->fd, data->output->name);
igt_assert_f(check_memleak(data), "memory leak detected\n");
igt_remove_fb(data->fd, &rfb);
test_fini(data);
}
igt_main
{
data_t data;
igt_skip_on_simulation();
memset(&data, 0, sizeof(data));
igt_fixture
{
data.fd = drm_open_driver_master(DRIVER_AMDGPU);
kmstest_set_vt_graphics_mode();
igt_display_require(&data.display, data.fd);
igt_require(data.display.is_atomic);
igt_display_require_output(&data.display);
}
igt_describe("Test memory leaks after resume from suspend");
igt_subtest("connector-suspend-resume") test_suspend_resume(&data);
igt_describe("Test memroy leaks after connector hotplug");
igt_subtest("connector-hotplug") test_hotplug(&data);
igt_fixture
{
igt_display_fini(&data.display);
}
}
|
