| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <errno.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| |
| #include <hardware/memtrack.h> |
| |
| #include "memtrack_msm.h" |
| |
| #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
| #define min(x, y) ((x) < (y) ? (x) : (y)) |
| |
| struct memtrack_record record_templates[] = { |
| { |
| .flags = MEMTRACK_FLAG_SMAPS_ACCOUNTED | |
| MEMTRACK_FLAG_PRIVATE | |
| MEMTRACK_FLAG_NONSECURE, |
| }, |
| { |
| .flags = MEMTRACK_FLAG_SMAPS_UNACCOUNTED | |
| MEMTRACK_FLAG_PRIVATE | |
| MEMTRACK_FLAG_NONSECURE, |
| }, |
| }; |
| |
| int kgsl_memtrack_get_memory(pid_t pid, enum memtrack_type type, |
| struct memtrack_record *records, |
| size_t *num_records) |
| { |
| size_t allocated_records = min(*num_records, ARRAY_SIZE(record_templates)); |
| int i; |
| FILE *fp; |
| FILE *smaps_fp = NULL; |
| char line[1024]; |
| char tmp[128]; |
| size_t accounted_size = 0; |
| size_t unaccounted_size = 0; |
| unsigned long smaps_addr = 0; |
| |
| *num_records = ARRAY_SIZE(record_templates); |
| |
| /* fastpath to return the necessary number of records */ |
| if (allocated_records == 0) { |
| return 0; |
| } |
| |
| memcpy(records, record_templates, |
| sizeof(struct memtrack_record) * allocated_records); |
| |
| snprintf(tmp, sizeof(tmp), "/d/kgsl/proc/%d/mem", pid); |
| fp = fopen(tmp, "r"); |
| if (fp == NULL) { |
| return -errno; |
| } |
| |
| if (type == MEMTRACK_TYPE_GL) { |
| snprintf(tmp, sizeof(tmp), "/proc/%d/smaps", pid); |
| smaps_fp = fopen(tmp, "r"); |
| if (smaps_fp == NULL) { |
| fclose(fp); |
| return -errno; |
| } |
| } |
| |
| while (1) { |
| unsigned long uaddr; |
| unsigned long size; |
| char line_type[7]; |
| int ret; |
| |
| if (fgets(line, sizeof(line), fp) == NULL) { |
| break; |
| } |
| |
| /* Format: |
| * gpuaddr useraddr size id flags type usage sglen |
| * 545ba000 545ba000 4096 1 ----p gpumem arraybuffer 1 |
| */ |
| ret = sscanf(line, "%*x %lx %lu %*d %*s %6s %*s %*d\n", |
| &uaddr, &size, line_type); |
| if (ret != 3) { |
| continue; |
| } |
| |
| if (type == MEMTRACK_TYPE_GL && strcmp(line_type, "gpumem") == 0) { |
| bool accounted = false; |
| /* |
| * We need to cross reference the user address against smaps, |
| * luckily both are sorted. |
| */ |
| while (smaps_addr <= uaddr) { |
| unsigned long start; |
| unsigned long end; |
| unsigned long smaps_size; |
| |
| if (fgets(line, sizeof(line), smaps_fp) == NULL) { |
| break; |
| } |
| |
| if (sscanf(line, "%8lx-%8lx", &start, &end) == 2) { |
| smaps_addr = start; |
| continue; |
| } |
| |
| if (smaps_addr != uaddr) { |
| continue; |
| } |
| |
| if (sscanf(line, "Rss: %lu kB", &smaps_size) == 1) { |
| if (smaps_size) { |
| accounted = true; |
| accounted_size += size; |
| break; |
| } |
| } |
| } |
| if (!accounted) { |
| unaccounted_size += size; |
| } |
| } else if (type == MEMTRACK_TYPE_GRAPHICS && strcmp(line_type, "ion") == 0) { |
| unaccounted_size += size; |
| } |
| } |
| |
| if (allocated_records > 0) { |
| records[0].size_in_bytes = accounted_size; |
| } |
| if (allocated_records > 1) { |
| records[1].size_in_bytes = unaccounted_size; |
| } |
| |
| if (smaps_fp) |
| fclose(smaps_fp); |
| fclose(fp); |
| |
| return 0; |
| } |