| /* |
| * Copyright 2010, Intel Corporation |
| * |
| * This file is part of PowerTOP |
| * |
| * This program file is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program in a file named COPYING; if not, write to the |
| * Free Software Foundation, Inc, |
| * 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301 USA |
| * or just google for it. |
| * |
| * Authors: |
| * Arjan van de Ven <arjan@linux.intel.com> |
| */ |
| |
| #include "tuning.h" |
| #include "tunable.h" |
| #include "unistd.h" |
| #include "tuningsysfs.h" |
| #include <string.h> |
| #include <utility> |
| #include <iostream> |
| #include <fstream> |
| |
| #include "../lib.h" |
| |
| sysfs_tunable::sysfs_tunable(const char *str, const char *_sysfs_path, const char *_target_content) : tunable(str, 1.0, _("Good"), _("Bad"), _("Unknown")) |
| { |
| strcpy(sysfs_path, _sysfs_path); |
| strcpy(target_value, _target_content); |
| bad_value[0] = 0; |
| sprintf(toggle_good, "echo '%s' > '%s';", target_value, sysfs_path); |
| sprintf(toggle_bad, "echo '%s' > '%s';", bad_value, sysfs_path); |
| } |
| |
| int sysfs_tunable::good_bad(void) |
| { |
| char current_value[4096], *c; |
| ifstream file; |
| |
| file.open(sysfs_path, ios::in); |
| if (!file) |
| return TUNE_NEUTRAL; |
| file.getline(current_value, 4096); |
| file.close(); |
| |
| c = strchr(current_value, '\n'); |
| if (c) |
| *c = 0; |
| |
| if (strcmp(current_value, target_value) == 0) |
| return TUNE_GOOD; |
| |
| strcpy(bad_value, current_value); |
| return TUNE_BAD; |
| } |
| |
| void sysfs_tunable::toggle(void) |
| { |
| int good; |
| good = good_bad(); |
| |
| if (good == TUNE_GOOD) { |
| if (strlen(bad_value) > 0) |
| write_sysfs(sysfs_path, bad_value); |
| return; |
| } |
| |
| write_sysfs(sysfs_path, target_value); |
| } |
| |
| const char *sysfs_tunable::toggle_script(void) { |
| int good; |
| good = good_bad(); |
| |
| if (good == TUNE_GOOD) { |
| if (strlen(bad_value) > 0) |
| return toggle_bad; |
| return NULL; |
| } |
| |
| return toggle_good; |
| } |
| |
| |
| void add_sysfs_tunable(const char *str, const char *_sysfs_path, const char *_target_content) |
| { |
| class sysfs_tunable *tunable; |
| |
| if (access(_sysfs_path, R_OK) != 0) |
| return; |
| |
| tunable = new class sysfs_tunable(str, _sysfs_path, _target_content); |
| |
| |
| all_tunables.push_back(tunable); |
| } |