/* * 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)); FILE *fp; char line[1024]; char tmp[128]; bool is_surfaceflinger = false; size_t accounted_size = 0; size_t unaccounted_size = 0; *num_records = ARRAY_SIZE(record_templates); /* fastpath to return the necessary number of records */ if (allocated_records == 0) { return 0; } snprintf(tmp, sizeof(tmp), "/proc/%d/cmdline", pid); fp = fopen(tmp, "r"); if (fp != NULL) { if (fgets(line, sizeof(line), fp)) { if (strcmp(line, "/system/bin/surfaceflinger") == 0) is_surfaceflinger = true; } fclose(fp); } memcpy(records, record_templates, sizeof(struct memtrack_record) * allocated_records); sprintf(tmp, "/d/kgsl/proc/%d/mem", pid); fp = fopen(tmp, "r"); if (fp == NULL) { return -errno; } /* Go through each line of <pid>/mem file and for every entry of type "gpumem" * check if the gpubuffer entry is usermapped or not. If the entry is usermapped * count the entry as accounted else count the entry as unaccounted. */ while (1) { unsigned long size; char line_type[7]; char flags[7]; char line_usage[19]; int ret; if (fgets(line, sizeof(line), fp) == NULL) { break; } /* Format: * gpuaddr useraddr size id flags type usage sglen * 545ba000 545ba000 4096 1 ----pY gpumem arraybuffer 1 */ ret = sscanf(line, "%*x %*lx %lu %*d %6s %6s %18s %*d\n", &size, flags, line_type, line_usage); if (ret != 4) { continue; } if (type == MEMTRACK_TYPE_GL && strcmp(line_type, "gpumem") == 0) { if (flags[5] == 'Y') accounted_size += size; else unaccounted_size += size; } else if (type == MEMTRACK_TYPE_GRAPHICS && strcmp(line_type, "ion") == 0) { if (!is_surfaceflinger || strcmp(line_usage, "egl_image") != 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; } fclose(fp); return 0; }