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
|
/*
* Copyright © 2011 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:
* Daniel Vetter <daniel.vetter@ffwll.ch>
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/time.h>
#include "drm.h"
#include "i915_drm.h"
#include "drmtest.h"
#include "intel_bufmgr.h"
#include "intel_batchbuffer.h"
#include "intel_gpu_tools.h"
static drm_intel_bufmgr *bufmgr;
struct intel_batchbuffer *batch;
/* Testcase: check whether the libdrm vma limiter works
*
* We've had reports of the X server exhausting the default rlimit of 64k vma's
* in the kernel. libdrm has grown facilities to limit the vma caching since,
* this checks whether they actually work.
*/
/* we do both cpu and gtt maps, so only need half of 64k to exhaust */
#define BO_ARRAY_SIZE 35000
drm_intel_bo *bos[BO_ARRAY_SIZE];
int main(int argc, char **argv)
{
int fd;
int i;
char *ptr;
igt_skip_on_simulation();
fd = drm_open_any();
bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
drm_intel_bufmgr_gem_enable_reuse(bufmgr);
batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
drm_intel_bufmgr_gem_set_vma_cache_size(bufmgr, 500);
for (i = 0; i < BO_ARRAY_SIZE; i++) {
bos[i] = drm_intel_bo_alloc(bufmgr, "mmap bo", 4096, 4096);
igt_assert(bos[i]);
drm_intel_bo_map(bos[i], 1);
ptr = bos[i]->virtual;
igt_assert(ptr);
*ptr = 'c';
drm_intel_bo_unmap(bos[i]);
drm_intel_gem_bo_map_gtt(bos[i]);
ptr = bos[i]->virtual;
igt_assert(ptr);
*ptr = 'c';
drm_intel_gem_bo_unmap_gtt(bos[i]);
}
/* and recheck whether a second map of the same still works */
for (i = 0; i < BO_ARRAY_SIZE; i++) {
bos[i] = drm_intel_bo_alloc(bufmgr, "mmap bo", 4096, 4096);
igt_assert(bos[i]);
drm_intel_bo_map(bos[i], 1);
ptr = bos[i]->virtual;
igt_assert(*ptr = 'c');
drm_intel_bo_unmap(bos[i]);
drm_intel_gem_bo_map_gtt(bos[i]);
ptr = bos[i]->virtual;
igt_assert(*ptr = 'c');
drm_intel_gem_bo_unmap_gtt(bos[i]);
}
intel_batchbuffer_free(batch);
drm_intel_bufmgr_destroy(bufmgr);
close(fd);
return 0;
}
|
