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 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