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
|
/*
* Copyright © 2011-2015 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.
*
* Authors:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <time.h>
#include "drm.h"
#include "ioctl_wrappers.h"
#include "drmtest.h"
#include "igt_aux.h"
static double elapsed(const struct timespec *start,
const struct timespec *end)
{
return (end->tv_sec - start->tv_sec) + 1e-9*(end->tv_nsec - start->tv_nsec);
}
int main(int argc, char **argv)
{
int fd = drm_open_driver(DRIVER_INTEL);
uint32_t cpu_write = 0;
uint32_t gtt_write = 0;
int reps = 13;
int size = 1024*1024;
uint32_t handle;
int c, n;
while ((c = getopt (argc, argv, "c:g:r:s:")) != -1) {
switch (c) {
case 'c':
cpu_write = *optarg == 'w' ? I915_GEM_DOMAIN_CPU : 0;
break;
case 'g':
gtt_write = *optarg == 'w' ? I915_GEM_DOMAIN_GTT : 0;
break;
case 'r':
reps = atoi(optarg);
if (reps < 1)
reps = 1;
break;
case 's':
size = atoi(optarg);
if (size < 4096)
size = 4096;
break;
default:
break;
}
}
fprintf(stderr, "size=%d, cpu=%d, gtt=%d\n", size, cpu_write, gtt_write);
handle = gem_create(fd, size);
gem_set_caching(fd, handle, I915_CACHING_NONE);
for (n = 0; n < reps; n++) {
struct timespec start, end;
uint64_t count = 0;
gem_set_domain(fd, handle,
I915_GEM_DOMAIN_CPU,
cpu_write);
clock_gettime(CLOCK_MONOTONIC, &start);
do {
for (c = 0; c < 1000; c++) {
gem_set_domain(fd, handle,
I915_GEM_DOMAIN_GTT,
gtt_write);
gem_set_domain(fd, handle,
I915_GEM_DOMAIN_CPU,
cpu_write);
}
count += c;
clock_gettime(CLOCK_MONOTONIC, &end);
} while (end.tv_sec - start.tv_sec < 2);
printf("%f\n", count / elapsed(&start, &end));
}
return 0;
}
|
