1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <stdbool.h>
19 #include <stdio.h>
20 #include <string.h>
21 #include <sys/mman.h>
22
23 #include <hardware/memtrack.h>
24
25 #include "memtrack_msm.h"
26
27 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
28 #define min(x, y) ((x) < (y) ? (x) : (y))
29
30 struct memtrack_record record_templates[] = {
31 {
32 .flags = MEMTRACK_FLAG_SMAPS_ACCOUNTED |
33 MEMTRACK_FLAG_PRIVATE |
34 MEMTRACK_FLAG_NONSECURE,
35 },
36 {
37 .flags = MEMTRACK_FLAG_SMAPS_UNACCOUNTED |
38 MEMTRACK_FLAG_PRIVATE |
39 MEMTRACK_FLAG_NONSECURE,
40 },
41 };
42
kgsl_memtrack_get_memory(pid_t pid,enum memtrack_type type,struct memtrack_record * records,size_t * num_records)43 int kgsl_memtrack_get_memory(pid_t pid, enum memtrack_type type,
44 struct memtrack_record *records,
45 size_t *num_records)
46 {
47 size_t allocated_records = min(*num_records, ARRAY_SIZE(record_templates));
48 FILE *fp;
49 char line[1024];
50 char tmp[128];
51 size_t accounted_size = 0;
52 size_t unaccounted_size = 0;
53
54 *num_records = ARRAY_SIZE(record_templates);
55
56 /* fastpath to return the necessary number of records */
57 if (allocated_records == 0) {
58 return 0;
59 }
60
61 memcpy(records, record_templates,
62 sizeof(struct memtrack_record) * allocated_records);
63
64 snprintf(tmp, sizeof(tmp), "/d/kgsl/proc/%d/mem", pid);
65 fp = fopen(tmp, "r");
66 if (fp == NULL) {
67 return -errno;
68 }
69
70 /* Go through each line of <pid>/mem file and for every entry of type "gpumem"
71 * check if the gpubuffer entry is usermapped or not. If the entry is usermapped
72 * count the entry as accounted else count the entry as unaccounted.
73 */
74 while (1) {
75 unsigned long size, mapsize;
76 char line_type[7];
77 char flags[10];
78 char line_usage[19];
79 int ret, egl_surface_count = 0, egl_image_count = 0;
80
81 if (fgets(line, sizeof(line), fp) == NULL) {
82 break;
83 }
84
85 /* Format:
86 * gpuaddr useraddr size id flags type usage sglen mapsize eglsrf eglimg
87 * 545ba000 545ba000 4096 1 -----pY gpumem arraybuffer 1 4096 0 0
88 */
89 ret = sscanf(line, "%*x %*x %lu %*d %9s %6s %18s %*d %lu %6d %6d\n",
90 &size, flags, line_type, line_usage, &mapsize,
91 &egl_surface_count, &egl_image_count);
92 if (ret != 7) {
93 continue;
94 }
95
96 if (size == 0) {
97 fclose(fp);
98 return -EINVAL;
99 }
100
101 if (unaccounted_size + size < size) {
102 fclose(fp);
103 return -ERANGE;
104 }
105
106 if (type == MEMTRACK_TYPE_GL && strcmp(line_type, "gpumem") == 0) {
107
108 if (flags[6] == 'Y') {
109 if (accounted_size + mapsize < accounted_size) {
110 fclose(fp);
111 return -ERANGE;
112 }
113
114 accounted_size += mapsize;
115
116 if (mapsize > size) {
117 fclose(fp);
118 return -EINVAL;
119 }
120 unaccounted_size += size - mapsize;
121 } else {
122 unaccounted_size += size;
123 }
124 } else if (type == MEMTRACK_TYPE_GRAPHICS && strcmp(line_type, "ion") == 0) {
125 if (strcmp(line_usage, "egl_surface") == 0) {
126 unaccounted_size += size;
127 }
128 else if (egl_surface_count == 0) {
129 unaccounted_size += size / (egl_image_count ? egl_image_count : 1);
130 }
131 }
132 }
133
134 if (allocated_records > 0) {
135 records[0].size_in_bytes = accounted_size;
136 }
137 if (allocated_records > 1) {
138 records[1].size_in_bytes = unaccounted_size;
139 }
140
141 fclose(fp);
142
143 return 0;
144 }
145