Colin Cross | 6a530a3 | 2013-09-06 18:03:02 -0700 | [diff] [blame] | 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 | int i; |
| 49 | FILE *fp; |
Colin Cross | 76d1054 | 2013-09-30 13:09:02 -0700 | [diff] [blame] | 50 | FILE *smaps_fp = NULL; |
Colin Cross | 6a530a3 | 2013-09-06 18:03:02 -0700 | [diff] [blame] | 51 | char line[1024]; |
| 52 | char tmp[128]; |
| 53 | size_t accounted_size = 0; |
| 54 | size_t unaccounted_size = 0; |
| 55 | unsigned long smaps_addr = 0; |
| 56 | |
| 57 | *num_records = ARRAY_SIZE(record_templates); |
| 58 | |
| 59 | /* fastpath to return the necessary number of records */ |
| 60 | if (allocated_records == 0) { |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | memcpy(records, record_templates, |
| 65 | sizeof(struct memtrack_record) * allocated_records); |
| 66 | |
Arun Kumar K.R | 4bc21ce | 2013-11-11 18:45:42 -0800 | [diff] [blame] | 67 | snprintf(tmp, sizeof(tmp), "/d/kgsl/proc/%d/mem", pid); |
Colin Cross | 6a530a3 | 2013-09-06 18:03:02 -0700 | [diff] [blame] | 68 | fp = fopen(tmp, "r"); |
| 69 | if (fp == NULL) { |
| 70 | return -errno; |
| 71 | } |
| 72 | |
| 73 | if (type == MEMTRACK_TYPE_GL) { |
Arun Kumar K.R | 4bc21ce | 2013-11-11 18:45:42 -0800 | [diff] [blame] | 74 | snprintf(tmp, sizeof(tmp), "/proc/%d/smaps", pid); |
Colin Cross | 6a530a3 | 2013-09-06 18:03:02 -0700 | [diff] [blame] | 75 | smaps_fp = fopen(tmp, "r"); |
| 76 | if (smaps_fp == NULL) { |
Colin Cross | 76d1054 | 2013-09-30 13:09:02 -0700 | [diff] [blame] | 77 | fclose(fp); |
Colin Cross | 6a530a3 | 2013-09-06 18:03:02 -0700 | [diff] [blame] | 78 | return -errno; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | while (1) { |
| 83 | unsigned long uaddr; |
| 84 | unsigned long size; |
| 85 | char line_type[7]; |
| 86 | int ret; |
| 87 | |
| 88 | if (fgets(line, sizeof(line), fp) == NULL) { |
| 89 | break; |
| 90 | } |
| 91 | |
| 92 | /* Format: |
| 93 | * gpuaddr useraddr size id flags type usage sglen |
| 94 | * 545ba000 545ba000 4096 1 ----p gpumem arraybuffer 1 |
| 95 | */ |
| 96 | ret = sscanf(line, "%*x %lx %lu %*d %*s %6s %*s %*d\n", |
| 97 | &uaddr, &size, line_type); |
| 98 | if (ret != 3) { |
| 99 | continue; |
| 100 | } |
| 101 | |
| 102 | if (type == MEMTRACK_TYPE_GL && strcmp(line_type, "gpumem") == 0) { |
| 103 | bool accounted = false; |
| 104 | /* |
| 105 | * We need to cross reference the user address against smaps, |
| 106 | * luckily both are sorted. |
| 107 | */ |
| 108 | while (smaps_addr <= uaddr) { |
| 109 | unsigned long start; |
| 110 | unsigned long end; |
| 111 | unsigned long smaps_size; |
| 112 | |
| 113 | if (fgets(line, sizeof(line), smaps_fp) == NULL) { |
| 114 | break; |
| 115 | } |
| 116 | |
| 117 | if (sscanf(line, "%8lx-%8lx", &start, &end) == 2) { |
| 118 | smaps_addr = start; |
| 119 | continue; |
| 120 | } |
| 121 | |
| 122 | if (smaps_addr != uaddr) { |
| 123 | continue; |
| 124 | } |
| 125 | |
| 126 | if (sscanf(line, "Rss: %lu kB", &smaps_size) == 1) { |
| 127 | if (smaps_size) { |
| 128 | accounted = true; |
| 129 | accounted_size += size; |
| 130 | break; |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | if (!accounted) { |
| 135 | unaccounted_size += size; |
| 136 | } |
| 137 | } else if (type == MEMTRACK_TYPE_GRAPHICS && strcmp(line_type, "ion") == 0) { |
| 138 | unaccounted_size += size; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | if (allocated_records > 0) { |
| 143 | records[0].size_in_bytes = accounted_size; |
| 144 | } |
| 145 | if (allocated_records > 1) { |
| 146 | records[1].size_in_bytes = unaccounted_size; |
| 147 | } |
| 148 | |
Colin Cross | 76d1054 | 2013-09-30 13:09:02 -0700 | [diff] [blame] | 149 | if (smaps_fp) |
| 150 | fclose(smaps_fp); |
Colin Cross | 6a530a3 | 2013-09-06 18:03:02 -0700 | [diff] [blame] | 151 | fclose(fp); |
| 152 | |
| 153 | return 0; |
| 154 | } |