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
|
/*
* Copyright © 2017 Intel Corporation
*
* 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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"
#define MAX_ERROR 5 /* % */
#define assert_within_epsilon(x, ref, tolerance) \
igt_assert_f(100 * x <= (100 + tolerance) * ref && \
100 * x >= (100 - tolerance) * ref, \
"'%s' != '%s' (%lld not within %d%% tolerance of %lld)\n",\
#x, #ref, (long long)x, tolerance, (long long)ref)
static void spin(int fd, unsigned int engine, unsigned int timeout_sec)
{
const uint64_t timeout_100ms = 100000000LL;
unsigned long loops = 0;
igt_spin_t *spin;
struct timespec tv = { };
struct timespec itv = { };
uint64_t elapsed;
spin = __igt_spin_batch_new(fd, .engine = engine);
while ((elapsed = igt_nsec_elapsed(&tv)) >> 30 < timeout_sec) {
igt_spin_t *next = __igt_spin_batch_new(fd, .engine = engine);
igt_spin_batch_set_timeout(spin,
timeout_100ms - igt_nsec_elapsed(&itv));
gem_sync(fd, spin->handle);
igt_debug("loop %lu: interval=%fms (target 100ms), elapsed %fms\n",
loops,
igt_nsec_elapsed(&itv) * 1e-6,
igt_nsec_elapsed(&tv) * 1e-6);
memset(&itv, 0, sizeof(itv));
igt_spin_batch_free(fd, spin);
spin = next;
loops++;
}
igt_spin_batch_free(fd, spin);
igt_info("Completed %ld loops in %lld ns, target %ld\n",
loops, (long long)elapsed, (long)(elapsed / timeout_100ms));
assert_within_epsilon(timeout_100ms * loops, elapsed, MAX_ERROR);
}
#define RESUBMIT_NEW_CTX (1 << 0)
#define RESUBMIT_ALL_ENGINES (1 << 1)
static void spin_resubmit(int fd, unsigned int engine, unsigned int flags)
{
const uint32_t ctx0 = gem_context_create(fd);
const uint32_t ctx1 = (flags & RESUBMIT_NEW_CTX) ?
gem_context_create(fd) : ctx0;
igt_spin_t *spin = __igt_spin_batch_new(fd, .ctx = ctx0, .engine = engine);
unsigned int other;
struct drm_i915_gem_execbuffer2 eb = {
.buffer_count = 1,
.buffers_ptr = to_user_pointer(&spin->obj[1]),
.rsvd1 = ctx1,
};
if (flags & RESUBMIT_ALL_ENGINES) {
for_each_physical_engine(fd, other) {
if (other == engine)
continue;
eb.flags = other;
gem_execbuf(fd, &eb);
}
} else {
eb.flags = engine;
gem_execbuf(fd, &eb);
}
igt_spin_batch_end(spin);
gem_sync(fd, spin->obj[1].handle);
igt_spin_batch_free(fd, spin);
if (ctx1 != ctx0)
gem_context_destroy(fd, ctx1);
gem_context_destroy(fd, ctx0);
}
static void spin_exit_handler(int sig)
{
igt_terminate_spin_batches();
}
static void spin_on_all_engines(int fd, unsigned int timeout_sec)
{
unsigned engine;
for_each_physical_engine(fd, engine) {
igt_fork(child, 1) {
igt_install_exit_handler(spin_exit_handler);
spin(fd, engine, timeout_sec);
}
}
igt_waitchildren();
}
igt_main
{
const struct intel_execution_engine *e;
int fd = -1;
igt_skip_on_simulation();
igt_fixture {
fd = drm_open_driver(DRIVER_INTEL);
igt_require_gem(fd);
igt_fork_hang_detector(fd);
}
for (e = intel_execution_engines; e->name; e++) {
igt_subtest_f("basic-%s", e->name)
spin(fd, e->exec_id, 3);
igt_subtest_f("resubmit-%s", e->name)
spin_resubmit(fd, e->exec_id, 0);
igt_subtest_f("resubmit-new-%s", e->name)
spin_resubmit(fd, e->exec_id, RESUBMIT_NEW_CTX);
igt_subtest_f("resubmit-all-%s", e->name)
spin_resubmit(fd, e->exec_id, RESUBMIT_ALL_ENGINES);
igt_subtest_f("resubmit-new-all-%s", e->name)
spin_resubmit(fd, e->exec_id,
RESUBMIT_NEW_CTX |
RESUBMIT_ALL_ENGINES);
}
igt_subtest("spin-each")
spin_on_all_engines(fd, 3);
igt_fixture {
igt_stop_hang_detector();
close(fd);
}
}
|
