From: Francois Fleuret Date: Fri, 5 Dec 2008 17:54:57 +0000 (+0100) Subject: Initial commit X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?p=breezed.git;a=commitdiff_plain;h=29d922d3b115ae81e076e9fc03e5ea986fc42630 Initial commit --- 29d922d3b115ae81e076e9fc03e5ea986fc42630 diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..837fcca --- /dev/null +++ b/Makefile @@ -0,0 +1,27 @@ + +# breezed is a fan speed control daemon for Linux computers. +# +# Copyright (c) 2008 Francois Fleuret +# Written by Francois Fleuret +# +# This file is part of breezed. +# +# breezed is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 3 as +# published by the Free Software Foundation. +# +# breezed 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 breezed. If not, see . + +all: breezed + +breezed: breezed.cc + g++ -o breezed breezed.cc + +clean: + \rm -f breezed diff --git a/README.txt b/README.txt new file mode 100644 index 0000000..ea3b4cc --- /dev/null +++ b/README.txt @@ -0,0 +1,58 @@ + + Breezed is a small daemon to control the speed of the fan, + depending on the current temperature of the computer. I have tested + it only on a Thinkpad X61s. + + * INSTALLATION + + You can install it simply by running as root + + ./install.sh + + and de-install it with + + ./remove.sh + + You must have a configuration file in /etc/breezed.conf. Only one + is currently provided in the archive, and it corresponds to the + settings _I_ picked for _my_ Lenovo X61s. + + I have no idea if these settings are safe on this laptop (I guess + so, since I have been using them for a few months now and it works + perfectly), and I suspect they are not safe for another laptop. + + * ALGORITHM + + Breezed scans the temperatures every 5s and sets the fan speed + according to a series of thresholds. + + Unfortunately, if the fan speed is set directly according to these + temperature thresholds, it creates oscillations: The fan goes up, + temperature goes down, hence fan goes down, temperature goes up, + etc. + + To mitigate such phenomenons, the daemon waits at least 30s after + the last change before reducing the fan speed, and the actual + thresholds to decrease the fan speed are two degrees below the + provided thresholds, which are used when increasing the fan + speed. This creates a stability area of two degrees, which seems to + be enough. Please let me know if you have problem with the + resulting overall behavior. + + * NOTES + + I wrote this daemon for my personal usage on a X61s, and using it + may damage your hardware. + + On Thinkpads you have to allow the module thinkpad_acpi to set the + fan speed, which is not allowed by default in Debian. To do so, you + have to have a file /etc/modprobe.d/thinkpad_acpi.modprobe + containing + + ---------------------------- snip snip ------------------------------- + options thinkpad_acpi fan_control=1 + ---------------------------- snip snip ------------------------------- + +-- +Francois Fleuret (francois@fleuret.org) +December 2008 diff --git a/breezed-resume.sh b/breezed-resume.sh new file mode 100755 index 0000000..472df6c --- /dev/null +++ b/breezed-resume.sh @@ -0,0 +1,28 @@ +#!/bin/bash + +# breezed is a fan speed control daemon for Linux computers. +# +# Copyright (c) 2008 Francois Fleuret +# Written by Francois Fleuret +# +# This file is part of breezed. +# +# breezed is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 3 as +# published by the Free Software Foundation. +# +# breezed 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 breezed. If not, see . + +# To put in /etc/acpi/resume.d/99-breezed.sh + +# Resuming messes up the /proc/acpi/* by removing / reloading modules, +# so we have to restart the daemon. + +/etc/init.d/breezed.sh restart + diff --git a/breezed.cc b/breezed.cc new file mode 100644 index 0000000..c958b13 --- /dev/null +++ b/breezed.cc @@ -0,0 +1,543 @@ + +/* + + breezed is a fan speed control daemon for Linux computers. + + Copyright (c) 2008 Francois Fleuret + Written by Francois Fleuret + + This file is part of breezed. + + breezed is free software: you can redistribute it and/or modify it + under the terms of the GNU General Public License version 3 as + published by the Free Software Foundation. + + breezed 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 breezed. If not, see . + +*/ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +using namespace std; + +const int major_version_number = 1; +const int minor_version_number = 1; + +const int buffer_size = 1024; + +const char *default_confguration_file = "/etc/breezed.conf"; + +// The time period to check the temperature. +const int polling_delay = 5; + +// Minimum time between last change and a change down. +const int minimum_delay_to_go_down = 30; + +// Gap between a threshold to go up and a threshold to go down to +// reduce the oscillations. +const int down_temperature_delta = 2; + +char *file_fan = 0; + +int debug = 0; +int nb_rounds_since_last_change = 0; +int last_level = -1; + +int file_fan_fd; + +int nb_temperature_thresholds = 0; +int *temperature_thresholds = 0; + +int nb_file_thermal = 0; +char **file_thermal = 0; +int *file_thermal_fd = 0; + +char *configuration_file; + +////////////////////////////////////////////////////////////////////// + +char *next_word(char *buffer, char *r, int buffer_size) { + char *s; + s = buffer; + + if(r != 0) { + while((*r == ' ') || (*r == '\t') || (*r == ',')) r++; + if(*r == '"') { + r++; + while((*r != '"') && (*r != '\0') && + (s max_fan_level) f = max_fan_level; + sprintf(buffer, "level %d\n", f); + if(write(fan_fd, buffer, strlen(buffer)) < 0) { + cerr << "Error in setting the fan level (" << strerror(errno) << ")." + << endl; + exit(1); + } +} + +void define_thermal_files(char *definition) { + char token[buffer_size]; + + if(file_thermal) { + cerr << "Thermal files already defined." << endl; + exit(1); + } + + char *s; + s = definition; + while(s) { + s = next_word(token, s, buffer_size); + nb_file_thermal++; + } + file_thermal = new char *[nb_file_thermal]; + file_thermal_fd = new int[nb_file_thermal]; + s = definition; + int k = 0; + while(s) { + s = next_word(token, s, buffer_size); + file_thermal[k] = new char[strlen(token) + 1]; + strcpy(file_thermal[k], token); + k++; + } +} + +void define_temperature_thresholds(char *definition) { + char token[buffer_size]; + + if(temperature_thresholds) { + cerr << "Temperature thresholds already defined." << endl; + exit(1); + } + + char *s; + s = definition; + while(s) { + s = next_word(token, s, buffer_size); + nb_temperature_thresholds++; + } + + temperature_thresholds = new int[nb_temperature_thresholds]; + + s = definition; + int k = 0; + while(s) { + s = next_word(token, s, buffer_size); + temperature_thresholds[k] = atoi(token); + if(k > 0 && + temperature_thresholds[k] < temperature_thresholds[k-1]) { + cerr << "The temperature thresholds have to be increasing." + << endl; + exit(0); + } + k++; + } + + temperature_thresholds[0] = -1; +} + +////////////////////////////////////////////////////////////////////// + +int main(int argc, char **argv) { + + char buffer[buffer_size], token[buffer_size]; + + configuration_file = new char[strlen(default_confguration_file) + 1]; + strcpy(configuration_file, default_confguration_file); + + int i = 1; + while(i < argc) { + + if(strcmp(argv[i], "--debug") == 0 || strcmp(argv[i], "-d") == 0) { + debug = 1; + i++; + } + + else if(strcmp(argv[i], "--version") == 0 || strcmp(argv[i], "-v") == 0) { + cout << "Breezed, " + << "v" << major_version_number + << "." << minor_version_number + << ". " + << "Written by Francois Fleuret (francois@fleuret.org).\n"; + exit(0); + } + + else if(strcmp(argv[i], "--no-configuration-file") == 0 || + strcmp(argv[i], "-ncf") == 0) { + delete[] configuration_file; + configuration_file = 0; + i++; + } + + else if(strcmp(argv[i], "--configuration-file") == 0 || + strcmp(argv[i], "-cf") == 0) { + i++; + if(i == argc) { + cerr << "Missing parameter for " << argv[i - 1] << endl; + exit(1); + } + + delete[] configuration_file; + configuration_file = new char[strlen(argv[i]) + 1]; + strcpy(configuration_file, argv[i]); + + i++; + } + + else if(strcmp(argv[i], "--thermal-files") == 0 || + strcmp(argv[i], "-tf") == 0) { + i++; + if(i == argc) { + cerr << "Missing parameter for " << argv[i - 1] << endl; + exit(1); + } + define_thermal_files(argv[i]); + i++; + } + + else if(strcmp(argv[i], "--fan-file") == 0 || + strcmp(argv[i], "-ff") == 0) { + i++; + if(i == argc) { + cerr << "Missing parameter for " << argv[i - 1] << endl; + exit(1); + } + + if(file_fan) { + cerr << "Fan file already defined." << endl; + exit(1); + } + file_fan = new char[strlen(argv[i]) + 1]; + strcpy(file_fan, argv[i]); + + i++; + } + + else if(strcmp(argv[i], "--temperature-thresholds") == 0 || + strcmp(argv[i], "-tt") == 0) { + i++; + + if(i == argc) { + cerr << "Missing parameter for " << argv[i - 1] << endl; + exit(1); + } + + define_temperature_thresholds(argv[i]); + i++; + } + + else if(strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) { + + cout << argv[0] << " [--version|-v] [--help|-h] [--debug|-d]\\\n\ + [--configuration-file|-cf ]\\\n\ + [--no-configuration-file|-ncf]\\\n\ + [--thermal-files|-tf ] \\\n\ + [--fanfile|-ff ] \\\n\ + [--temperature-thresholds|-tt ]\n\ +\n\ + --help|-h : shows this help\n\ + --version|-v : shows the version number\n\ + --debug|-d : prints out additional information\n\ + --configuration-file|-cf sets the configuration file\n\ + --no-configuration-file|-ncf do not load a configuration file\n\ + --thermal-files|-tf : sets where to look for temperatures\n\ + --fanfile|-ff : sets where to control the fan level\n\ + --temperature-thresholds|-tt : sets the temperature thresholds\n\ +\n\ +This daemon polls the temperatures every 5s, takes the max and sets\n\ +the fan level accordingly. It uses as temperatures all the numbers it\n\ +finds in the provided \"thermal files\". Hence you can use as well\n\ +/proc/acpi/thermal_zone/THM*/temperature or /proc/acpi/ibm/thermal.\n\ +\n\ +The fan speed is set by echoing into the provided fan file.\n\ +\n\ +To reduce oscillations, it will not reduce the fan speed less than 30s\n\ +after the last previous change and the thresholds actually used to\n\ +reduce the fan speed are two degrees lower than the provided\n\ +thresholds, which are used to increase the fan speed.\n\ +\n\ +This daemon should be started through the adequate shell script in\n\ +/etc/init.d.\n\ +\n\ +Options can be set either in the configuration file, or on the \n\ +command line. Options can not be set twice.\n\ +\n\ +Version " << major_version_number << "." + << minor_version_number << ", December 2008.\n\ +\n\ +Written by Francois Fleuret (francois@fleuret.org).\n"; + + exit(0); + } + + else { + cerr << "Unknown argument " << argv[i] << "." << endl; + exit(1); + } + } + + + ////////////////////////////////////////////////////////////////////// + + if(configuration_file) { + ifstream cf(configuration_file); + if(cf.fail()) { + cerr << "Can not open " << configuration_file << " for reading." << endl; + exit(1); + } + + char *s; + + int line_number = 0; + + while(!cf.eof()) { + cf.getline(buffer, buffer_size); + line_number++; + + s = next_word(token, buffer, buffer_size); + + if(strcmp(token, "thermal_files") == 0) { + if(s == 0) { + cerr << "Missing parameter in " + << configuration_file << ":" << line_number << endl; + exit(1); + } + define_thermal_files(s); + } + + else if(strcmp(token, "debug") == 0) { + debug = 1; + } + + else if(strcmp(token, "fan_file") == 0) { + if(file_fan) { + cerr << "Fan file already defined." << endl; + exit(1); + } + if(s == 0) { + cerr << "Missing parameter in " + << configuration_file << ":" << line_number << endl; + exit(1); + } + file_fan = new char[strlen(s) + 1]; + strcpy(file_fan, s); + } + + else if(strcmp(token, "temperature_thresholds") == 0) { + if(s == 0) { + cerr << "Missing parameter in " + << configuration_file << ":" << line_number << endl; + exit(1); + } + define_temperature_thresholds(s); + } + + else if(token[0] && token[0] != '#') { + cerr << "Unknown keyword '" << token << "' in " + << configuration_file << ":" << line_number << endl; + exit(1); + } + } + } + + ////////////////////////////////////////////////////////////////////// + + if(nb_temperature_thresholds == 0) { + cerr << "No temperature threshold was provided." << endl; + exit(1); + } + + if(nb_file_thermal == 0) { + cerr << "No thermal file was provided." << endl; + exit(1); + } + + if(file_fan == 0){ + cerr << "No fan file was provided." << endl; + exit(1); + } + + for(int i = 0; i < nb_file_thermal; i++) { + file_thermal_fd[i] = open(file_thermal[i], O_RDONLY); + if(file_thermal_fd[i] < 0) { + cerr << "Can not open " << file_thermal[i] + << " for reading (" << strerror(errno) << ")." + << endl; + exit(1); + } + } + + file_fan_fd = open(file_fan, O_WRONLY); + + if(file_fan_fd < 0) { + cerr << "Can not open " << file_fan + << " for writing (" << strerror(errno) << ")." + << endl; + exit(1); + } + + ////////////////////////////////////////////////////////////////////// + + if(debug) { + for(int t = 0; t < nb_file_thermal; t++) { + cout << "file_thermal[" << t << "] " << file_thermal[t] << endl; + } + + cout << "file_fan " << file_fan << endl; + + for(int t = 0; t < nb_temperature_thresholds; t++) { + cout << "temperature_thresholds[" << t << "] " + << temperature_thresholds[t] << endl; + } + } + + ////////////////////////////////////////////////////////////////////// + + while(1) { + + int temperature = -1; + + if(debug) { + cout << "Temperature:"; + } + + for(int i = 0; i < nb_file_thermal; i++) { + lseek(file_thermal_fd[i], 0, SEEK_SET); + int size = read(file_thermal_fd[i], buffer, buffer_size); + + if(size > 0 && size < buffer_size) { + buffer[size] = '\0'; + + char *s = buffer; + + while(*s) { + while(*s && *s != '-' && (*s < '0') || (*s > '9')) s++; + + if(*s) { + int t = 0, sign = 1; + if(*s == '-') { + sign = -1; + s++; + } + + while(*s >= '0' && *s <= '9') { + t = t * 10 + (*s - '0'); + s++; + } + + t *= sign; + if(debug) { + cout << " " << t; + } + + if(t > temperature) temperature = t; + } + } + + if(debug) { + if(i < nb_file_thermal - 1) + cout << " /"; + else + cout << endl; + } + } else { + if(size == 0) { + cerr << "Nothing to read in " << file_thermal[i] << endl; + } else if(size < 0) { + cerr << "Error while reading " << file_thermal[i] + << " (" << strerror(errno) << ")." << endl; + } else { + cerr << "Error while reading " << file_thermal[i] + << " (too large)." << endl; + } + exit(1); + } + } + + if(temperature < 0) { + cerr << "Could not read a meaningful temperature." << endl; + exit(1); + } + + nb_rounds_since_last_change++; + + int new_level = last_level; + + int new_level_up = nb_temperature_thresholds - 1; + while(new_level_up > 0 && + temperature < temperature_thresholds[new_level_up]) { + new_level_up--; + } + + if(new_level_up > last_level) { + new_level = new_level_up; + } else { + int new_level_down = nb_temperature_thresholds - 1; + while(new_level_down > 0 && + temperature < + temperature_thresholds[new_level_down] - down_temperature_delta) + new_level_down--; + if(new_level_down < last_level && + nb_rounds_since_last_change * polling_delay >= + minimum_delay_to_go_down) { + new_level = new_level_down; + } + } + + // We set it every time, even when there is no change, to handle + // when the level has been modified somewhere else (for instance + // when combing back from suspend). + + set_fan_level(file_fan_fd, new_level, nb_temperature_thresholds - 1); + + if(new_level != last_level) { + nb_rounds_since_last_change = 0; + last_level = new_level; + if(debug) { + cout << "Temperature is " << temperature << "C," + << " setting the fan level to " << new_level + << endl; + } + } + + sleep(polling_delay); + } +} diff --git a/breezed.sh b/breezed.sh new file mode 100755 index 0000000..35e6067 --- /dev/null +++ b/breezed.sh @@ -0,0 +1,65 @@ +#!/bin/bash + +# breezed is a fan speed control daemon for Linux computers. +# +# Copyright (c) 2008 Francois Fleuret +# Written by Francois Fleuret +# +# This file is part of breezed. +# +# breezed is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 3 as +# published by the Free Software Foundation. +# +# breezed 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 breezed. If not, see . + +### BEGIN INIT INFO +# Provides: breezed +# Required-Start: +# Required-Stop: +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: Fan control daemon +### END INIT INFO + +DAEMON="/usr/local/bin/breezed" + +test -x $DAEMON || exit 0 + +. /lib/lsb/init-functions + +case "$1" in + + start) + log_daemon_msg "Starting fan control daemon" "breezed" + start-stop-daemon --start --background --quiet \ + --make-pidfile --pidfile /var/run/breezed.pid \ + --exec ${DAEMON} + log_end_msg $? + ;; + + restart) + $0 stop + $0 start + ;; + + stop) + log_daemon_msg "Stopping fan control daemon" "breezed" + start-stop-daemon --stop --quiet \ + --pidfile /var/run/breezed.pid + log_end_msg $? + ;; + + *) + echo "Usage: breezed.sh [start|restart|stop]" >&2 + exit 3 + ;; +esac + +###################################################################### diff --git a/breezed_Lenovo_X61s.conf b/breezed_Lenovo_X61s.conf new file mode 100644 index 0000000..538e858 --- /dev/null +++ b/breezed_Lenovo_X61s.conf @@ -0,0 +1,9 @@ + +# Configuration file for breezed on a lenovo X61s. +# Written by Francois Fleuret (francois@fleuret.org) + +# This file is distributed without ANY WARRANTY of any kind. + +thermal_files /proc/acpi/thermal_zone/THM0/temperature /proc/acpi/thermal_zone/THM1/temperature +fan_file /proc/acpi/ibm/fan +temperature_thresholds -1,52,54,56,58,60,62,64 diff --git a/gpl-3.0.txt b/gpl-3.0.txt new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/gpl-3.0.txt @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/install.sh b/install.sh new file mode 100755 index 0000000..d2b1ea8 --- /dev/null +++ b/install.sh @@ -0,0 +1,36 @@ +#!/bin/bash + +# breezed is a fan speed control daemon for Linux computers. +# +# Copyright (c) 2008 Francois Fleuret +# Written by Francois Fleuret +# +# This file is part of breezed. +# +# breezed is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 3 as +# published by the Free Software Foundation. +# +# breezed 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 breezed. If not, see . + +make -k + +if [[ ! -a "/etc/breezed.conf" ]]; then + echo "You have to copy one of the breezed_*.conf file in /etc/breezed.conf" + echo "before installing the daemon." + exit 0 +fi + +cp ./breezed /usr/local/bin/ +cp ./breezed.sh /etc/init.d/ +cp ./breezed-resume.sh /etc/acpi/resume.d/99-breezed.sh + +update-rc.d breezed.sh defaults + +/etc/init.d/breezed.sh start diff --git a/remove.sh b/remove.sh new file mode 100755 index 0000000..8753bc4 --- /dev/null +++ b/remove.sh @@ -0,0 +1,27 @@ +#!/bin/bash + +# breezed is a fan speed control daemon for Linux computers. +# +# Copyright (c) 2008 Francois Fleuret +# Written by Francois Fleuret +# +# This file is part of breezed. +# +# breezed is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 3 as +# published by the Free Software Foundation. +# +# breezed 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 breezed. If not, see . + +/etc/init.d/breezed.sh stop +update-rc.d -f breezed.sh remove + +rm /usr/local/bin/breezed +rm /etc/init.d/breezed.sh +rm /etc/acpi/resume.d/99-breezed.sh