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Diffstat (limited to 'tools/thermal/tmon/tmon.c')
| -rw-r--r-- | tools/thermal/tmon/tmon.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/tools/thermal/tmon/tmon.c b/tools/thermal/tmon/tmon.c new file mode 100644 index 000000000..b43138f8b --- /dev/null +++ b/tools/thermal/tmon/tmon.c @@ -0,0 +1,385 @@ +/* + * tmon.c Thermal Monitor (TMON) main function and entry point + * + * Copyright (C) 2012 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 or later as published by the Free Software Foundation. + * + * 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. + * + * Author: Jacob Pan <jacob.jun.pan@linux.intel.com> + * + */ + +#include <getopt.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <ncurses.h> +#include <ctype.h> +#include <time.h> +#include <signal.h> +#include <limits.h> +#include <sys/time.h> +#include <pthread.h> +#include <math.h> +#include <stdarg.h> +#include <syslog.h> + +#include "tmon.h" + +unsigned long ticktime = 1; /* seconds */ +unsigned long no_control = 1; /* monitoring only or use cooling device for + * temperature control. + */ +double time_elapsed = 0.0; +unsigned long target_temp_user = 65; /* can be select by tui later */ +int dialogue_on; +int tmon_exit; +static short daemon_mode; +static int logging; /* for recording thermal data to a file */ +static int debug_on; +FILE *tmon_log; +/*cooling device used for the PID controller */ +char ctrl_cdev[CDEV_NAME_SIZE] = "None"; +int target_thermal_zone; /* user selected target zone instance */ +static void start_daemon_mode(void); + +pthread_t event_tid; +pthread_mutex_t input_lock; +void usage() +{ + printf("Usage: tmon [OPTION...]\n"); + printf(" -c, --control cooling device in control\n"); + printf(" -d, --daemon run as daemon, no TUI\n"); + printf(" -g, --debug debug message in syslog\n"); + printf(" -h, --help show this help message\n"); + printf(" -l, --log log data to /var/tmp/tmon.log\n"); + printf(" -t, --time-interval sampling time interval, > 1 sec.\n"); + printf(" -T, --target-temp initial target temperature\n"); + printf(" -v, --version show version\n"); + printf(" -z, --zone target thermal zone id\n"); + + exit(0); +} + +void version() +{ + printf("TMON version %s\n", VERSION); + exit(EXIT_SUCCESS); +} + +static void tmon_cleanup(void) +{ + + syslog(LOG_INFO, "TMON exit cleanup\n"); + fflush(stdout); + refresh(); + if (tmon_log) + fclose(tmon_log); + if (event_tid) { + pthread_mutex_lock(&input_lock); + pthread_cancel(event_tid); + pthread_mutex_unlock(&input_lock); + pthread_mutex_destroy(&input_lock); + } + closelog(); + /* relax control knobs, undo throttling */ + set_ctrl_state(0); + + keypad(stdscr, FALSE); + echo(); + nocbreak(); + close_windows(); + endwin(); + free_thermal_data(); + + exit(1); +} + + +static void tmon_sig_handler(int sig) +{ + syslog(LOG_INFO, "TMON caught signal %d\n", sig); + refresh(); + switch (sig) { + case SIGTERM: + printf("sigterm, exit and clean up\n"); + fflush(stdout); + break; + case SIGKILL: + printf("sigkill, exit and clean up\n"); + fflush(stdout); + break; + case SIGINT: + printf("ctrl-c, exit and clean up\n"); + fflush(stdout); + break; + default: + break; + } + tmon_exit = true; +} + + +static void start_syslog(void) +{ + if (debug_on) + setlogmask(LOG_UPTO(LOG_DEBUG)); + else + setlogmask(LOG_UPTO(LOG_ERR)); + openlog("tmon.log", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL0); + syslog(LOG_NOTICE, "TMON started by User %d", getuid()); +} + +static void prepare_logging(void) +{ + int i; + struct stat logstat; + + if (!logging) + return; + /* open local data log file */ + tmon_log = fopen(TMON_LOG_FILE, "w+"); + if (!tmon_log) { + syslog(LOG_ERR, "failed to open log file %s\n", TMON_LOG_FILE); + return; + } + + if (lstat(TMON_LOG_FILE, &logstat) < 0) { + syslog(LOG_ERR, "Unable to stat log file %s\n", TMON_LOG_FILE); + fclose(tmon_log); + tmon_log = NULL; + return; + } + + /* The log file must be a regular file owned by us */ + if (S_ISLNK(logstat.st_mode)) { + syslog(LOG_ERR, "Log file is a symlink. Will not log\n"); + fclose(tmon_log); + tmon_log = NULL; + return; + } + + if (logstat.st_uid != getuid()) { + syslog(LOG_ERR, "We don't own the log file. Not logging\n"); + fclose(tmon_log); + tmon_log = NULL; + return; + } + + + fprintf(tmon_log, "#----------- THERMAL SYSTEM CONFIG -------------\n"); + for (i = 0; i < ptdata.nr_tz_sensor; i++) { + char binding_str[33]; /* size of long + 1 */ + int j; + + memset(binding_str, 0, sizeof(binding_str)); + for (j = 0; j < 32; j++) + binding_str[j] = (ptdata.tzi[i].cdev_binding & 1<<j) ? + '1' : '0'; + + fprintf(tmon_log, "#thermal zone %s%02d cdevs binding: %32s\n", + ptdata.tzi[i].type, + ptdata.tzi[i].instance, + binding_str); + for (j = 0; j < ptdata.tzi[i].nr_trip_pts; j++) { + fprintf(tmon_log, "#\tTP%02d type:%s, temp:%lu\n", j, + trip_type_name[ptdata.tzi[i].tp[j].type], + ptdata.tzi[i].tp[j].temp); + } + + } + + for (i = 0; i < ptdata.nr_cooling_dev; i++) + fprintf(tmon_log, "#cooling devices%02d: %s\n", + i, ptdata.cdi[i].type); + + fprintf(tmon_log, "#---------- THERMAL DATA LOG STARTED -----------\n"); + fprintf(tmon_log, "Samples TargetTemp "); + for (i = 0; i < ptdata.nr_tz_sensor; i++) { + fprintf(tmon_log, "%s%d ", ptdata.tzi[i].type, + ptdata.tzi[i].instance); + } + for (i = 0; i < ptdata.nr_cooling_dev; i++) + fprintf(tmon_log, "%s%d ", ptdata.cdi[i].type, + ptdata.cdi[i].instance); + + fprintf(tmon_log, "\n"); +} + +static struct option opts[] = { + { "control", 1, NULL, 'c' }, + { "daemon", 0, NULL, 'd' }, + { "time-interval", 1, NULL, 't' }, + { "target-temp", 1, NULL, 'T' }, + { "log", 0, NULL, 'l' }, + { "help", 0, NULL, 'h' }, + { "version", 0, NULL, 'v' }, + { "debug", 0, NULL, 'g' }, + { 0, 0, NULL, 0 } +}; + + +int main(int argc, char **argv) +{ + int err = 0; + int id2 = 0, c; + double yk = 0.0, temp; /* controller output */ + int target_tz_index; + + if (geteuid() != 0) { + printf("TMON needs to be run as root\n"); + exit(EXIT_FAILURE); + } + + while ((c = getopt_long(argc, argv, "c:dlht:T:vgz:", opts, &id2)) != -1) { + switch (c) { + case 'c': + no_control = 0; + strncpy(ctrl_cdev, optarg, CDEV_NAME_SIZE); + break; + case 'd': + start_daemon_mode(); + printf("Run TMON in daemon mode\n"); + break; + case 't': + ticktime = strtod(optarg, NULL); + if (ticktime < 1) + ticktime = 1; + break; + case 'T': + temp = strtod(optarg, NULL); + if (temp < 0) { + fprintf(stderr, "error: temperature must be positive\n"); + return 1; + } + target_temp_user = temp; + break; + case 'l': + printf("Logging data to /var/tmp/tmon.log\n"); + logging = 1; + break; + case 'h': + usage(); + break; + case 'v': + version(); + break; + case 'g': + debug_on = 1; + break; + case 'z': + target_thermal_zone = strtod(optarg, NULL); + break; + default: + break; + } + } + if (pthread_mutex_init(&input_lock, NULL) != 0) { + fprintf(stderr, "\n mutex init failed, exit\n"); + return 1; + } + start_syslog(); + if (signal(SIGINT, tmon_sig_handler) == SIG_ERR) + syslog(LOG_DEBUG, "Cannot handle SIGINT\n"); + if (signal(SIGTERM, tmon_sig_handler) == SIG_ERR) + syslog(LOG_DEBUG, "Cannot handle SIGINT\n"); + + if (probe_thermal_sysfs()) { + pthread_mutex_destroy(&input_lock); + closelog(); + return -1; + } + initialize_curses(); + setup_windows(); + signal(SIGWINCH, resize_handler); + show_title_bar(); + show_sensors_w(); + show_cooling_device(); + update_thermal_data(); + show_data_w(); + prepare_logging(); + init_thermal_controller(); + + nodelay(stdscr, TRUE); + err = pthread_create(&event_tid, NULL, &handle_tui_events, NULL); + if (err != 0) { + printf("\ncan't create thread :[%s]", strerror(err)); + tmon_cleanup(); + exit(EXIT_FAILURE); + } + + /* validate range of user selected target zone, default to the first + * instance if out of range + */ + target_tz_index = zone_instance_to_index(target_thermal_zone); + if (target_tz_index < 0) { + target_thermal_zone = ptdata.tzi[0].instance; + syslog(LOG_ERR, "target zone is not found, default to %d\n", + target_thermal_zone); + } + while (1) { + sleep(ticktime); + show_title_bar(); + show_sensors_w(); + update_thermal_data(); + if (!dialogue_on) { + show_data_w(); + show_cooling_device(); + } + time_elapsed += ticktime; + controller_handler(trec[0].temp[target_tz_index] / 1000, + &yk); + trec[0].pid_out_pct = yk; + if (!dialogue_on) + show_control_w(); + if (tmon_exit) + break; + } + tmon_cleanup(); + return 0; +} + +static void start_daemon_mode() +{ + daemon_mode = 1; + /* fork */ + pid_t sid, pid = fork(); + if (pid < 0) { + exit(EXIT_FAILURE); + } else if (pid > 0) + /* kill parent */ + exit(EXIT_SUCCESS); + + /* disable TUI, it may not be necessary, but saves some resource */ + disable_tui(); + + /* change the file mode mask */ + umask(S_IWGRP | S_IWOTH); + + /* new SID for the daemon process */ + sid = setsid(); + if (sid < 0) + exit(EXIT_FAILURE); + + /* change working directory */ + if ((chdir("/")) < 0) + exit(EXIT_FAILURE); + + + sleep(10); + + close(STDIN_FILENO); + close(STDOUT_FILENO); + close(STDERR_FILENO); + +} |