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145 lines
4.3 KiB
145 lines
4.3 KiB
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <hardware/memtrack.h>
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#include "memtrack_msm.h"
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#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
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#define min(x, y) ((x) < (y) ? (x) : (y))
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struct memtrack_record record_templates[] = {
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{
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.flags = MEMTRACK_FLAG_SMAPS_ACCOUNTED |
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MEMTRACK_FLAG_PRIVATE |
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MEMTRACK_FLAG_NONSECURE,
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},
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{
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.flags = MEMTRACK_FLAG_SMAPS_UNACCOUNTED |
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MEMTRACK_FLAG_PRIVATE |
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MEMTRACK_FLAG_NONSECURE,
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},
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};
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int kgsl_memtrack_get_memory(pid_t pid, enum memtrack_type type,
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struct memtrack_record *records,
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size_t *num_records)
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{
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size_t allocated_records = min(*num_records, ARRAY_SIZE(record_templates));
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FILE *fp;
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char line[1024];
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char tmp[128];
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size_t accounted_size = 0;
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size_t unaccounted_size = 0;
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*num_records = ARRAY_SIZE(record_templates);
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/* fastpath to return the necessary number of records */
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if (allocated_records == 0) {
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return 0;
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}
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memcpy(records, record_templates,
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sizeof(struct memtrack_record) * allocated_records);
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snprintf(tmp, sizeof(tmp), "/d/kgsl/proc/%d/mem", pid);
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fp = fopen(tmp, "r");
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if (fp == NULL) {
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return -errno;
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}
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/* Go through each line of <pid>/mem file and for every entry of type "gpumem"
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* check if the gpubuffer entry is usermapped or not. If the entry is usermapped
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* count the entry as accounted else count the entry as unaccounted.
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*/
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while (1) {
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unsigned long size, mapsize;
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char line_type[7];
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char flags[10];
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char line_usage[19];
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int ret, egl_surface_count = 0, egl_image_count = 0;
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if (fgets(line, sizeof(line), fp) == NULL) {
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break;
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}
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/* Format:
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* gpuaddr useraddr size id flags type usage sglen mapsize eglsrf eglimg
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* 545ba000 545ba000 4096 1 -----pY gpumem arraybuffer 1 4096 0 0
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*/
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ret = sscanf(line, "%*x %*x %lu %*d %9s %6s %18s %*d %lu %6d %6d\n",
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&size, flags, line_type, line_usage, &mapsize,
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&egl_surface_count, &egl_image_count);
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if (ret != 7) {
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continue;
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}
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if (size == 0) {
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fclose(fp);
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return -EINVAL;
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}
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if (unaccounted_size + size < size) {
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fclose(fp);
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return -ERANGE;
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}
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if (type == MEMTRACK_TYPE_GL && strcmp(line_type, "gpumem") == 0) {
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if (flags[6] == 'Y') {
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if (accounted_size + mapsize < accounted_size) {
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fclose(fp);
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return -ERANGE;
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}
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accounted_size += mapsize;
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if (mapsize > size) {
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fclose(fp);
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return -EINVAL;
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}
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unaccounted_size += size - mapsize;
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} else {
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unaccounted_size += size;
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}
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} else if (type == MEMTRACK_TYPE_GRAPHICS && strcmp(line_type, "ion") == 0) {
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if (strcmp(line_usage, "egl_surface") == 0) {
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unaccounted_size += size;
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}
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else if (egl_surface_count == 0) {
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unaccounted_size += size / (egl_image_count ? egl_image_count : 1);
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}
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}
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}
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if (allocated_records > 0) {
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records[0].size_in_bytes = accounted_size;
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}
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if (allocated_records > 1) {
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records[1].size_in_bytes = unaccounted_size;
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}
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fclose(fp);
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return 0;
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}
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