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-rw-r--r--tools/thermal/tmon/tmon.c352
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diff --git a/tools/thermal/tmon/tmon.c b/tools/thermal/tmon/tmon.c
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1/*
2 * tmon.c Thermal Monitor (TMON) main function and entry point
3 *
4 * Copyright (C) 2012 Intel Corporation. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 or later as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * Author: Jacob Pan <jacob.jun.pan@linux.intel.com>
16 *
17 */
18
19#include <getopt.h>
20#include <unistd.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <ncurses.h>
27#include <ctype.h>
28#include <time.h>
29#include <signal.h>
30#include <limits.h>
31#include <sys/time.h>
32#include <pthread.h>
33#include <math.h>
34#include <stdarg.h>
35#include <syslog.h>
36
37#include "tmon.h"
38
39unsigned long ticktime = 1; /* seconds */
40unsigned long no_control = 1; /* monitoring only or use cooling device for
41 * temperature control.
42 */
43double time_elapsed = 0.0;
44unsigned long target_temp_user = 65; /* can be select by tui later */
45int dialogue_on;
46int tmon_exit;
47static short daemon_mode;
48static int logging; /* for recording thermal data to a file */
49static int debug_on;
50FILE *tmon_log;
51/*cooling device used for the PID controller */
52char ctrl_cdev[CDEV_NAME_SIZE] = "None";
53int target_thermal_zone; /* user selected target zone instance */
54static void start_daemon_mode(void);
55
56pthread_t event_tid;
57pthread_mutex_t input_lock;
58void usage()
59{
60 printf("Usage: tmon [OPTION...]\n");
61 printf(" -c, --control cooling device in control\n");
62 printf(" -d, --daemon run as daemon, no TUI\n");
63 printf(" -g, --debug debug message in syslog\n");
64 printf(" -h, --help show this help message\n");
65 printf(" -l, --log log data to /var/tmp/tmon.log\n");
66 printf(" -t, --time-interval sampling time interval, > 1 sec.\n");
67 printf(" -v, --version show version\n");
68 printf(" -z, --zone target thermal zone id\n");
69
70 exit(0);
71}
72
73void version()
74{
75 printf("TMON version %s\n", VERSION);
76 exit(EXIT_SUCCESS);
77}
78
79static void tmon_cleanup(void)
80{
81
82 syslog(LOG_INFO, "TMON exit cleanup\n");
83 fflush(stdout);
84 refresh();
85 if (tmon_log)
86 fclose(tmon_log);
87 if (event_tid) {
88 pthread_mutex_lock(&input_lock);
89 pthread_cancel(event_tid);
90 pthread_mutex_unlock(&input_lock);
91 pthread_mutex_destroy(&input_lock);
92 }
93 closelog();
94 /* relax control knobs, undo throttling */
95 set_ctrl_state(0);
96
97 keypad(stdscr, FALSE);
98 echo();
99 nocbreak();
100 close_windows();
101 endwin();
102 free_thermal_data();
103
104 exit(1);
105}
106
107
108static void tmon_sig_handler(int sig)
109{
110 syslog(LOG_INFO, "TMON caught signal %d\n", sig);
111 refresh();
112 switch (sig) {
113 case SIGTERM:
114 printf("sigterm, exit and clean up\n");
115 fflush(stdout);
116 break;
117 case SIGKILL:
118 printf("sigkill, exit and clean up\n");
119 fflush(stdout);
120 break;
121 case SIGINT:
122 printf("ctrl-c, exit and clean up\n");
123 fflush(stdout);
124 break;
125 default:
126 break;
127 }
128 tmon_exit = true;
129}
130
131
132static void start_syslog(void)
133{
134 if (debug_on)
135 setlogmask(LOG_UPTO(LOG_DEBUG));
136 else
137 setlogmask(LOG_UPTO(LOG_ERR));
138 openlog("tmon.log", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL0);
139 syslog(LOG_NOTICE, "TMON started by User %d", getuid());
140}
141
142static void prepare_logging(void)
143{
144 int i;
145
146 if (!logging)
147 return;
148 /* open local data log file */
149 tmon_log = fopen(TMON_LOG_FILE, "w+");
150 if (!tmon_log) {
151 syslog(LOG_ERR, "failed to open log file %s\n", TMON_LOG_FILE);
152 return;
153 }
154
155 fprintf(tmon_log, "#----------- THERMAL SYSTEM CONFIG -------------\n");
156 for (i = 0; i < ptdata.nr_tz_sensor; i++) {
157 char binding_str[33]; /* size of long + 1 */
158 int j;
159
160 memset(binding_str, 0, sizeof(binding_str));
161 for (j = 0; j < 32; j++)
162 binding_str[j] = (ptdata.tzi[i].cdev_binding & 1<<j) ?
163 '1' : '0';
164
165 fprintf(tmon_log, "#thermal zone %s%02d cdevs binding: %32s\n",
166 ptdata.tzi[i].type,
167 ptdata.tzi[i].instance,
168 binding_str);
169 for (j = 0; j < ptdata.tzi[i].nr_trip_pts; j++) {
170 fprintf(tmon_log, "#\tTP%02d type:%s, temp:%lu\n", j,
171 trip_type_name[ptdata.tzi[i].tp[j].type],
172 ptdata.tzi[i].tp[j].temp);
173 }
174
175 }
176
177 for (i = 0; i < ptdata.nr_cooling_dev; i++)
178 fprintf(tmon_log, "#cooling devices%02d: %s\n",
179 i, ptdata.cdi[i].type);
180
181 fprintf(tmon_log, "#---------- THERMAL DATA LOG STARTED -----------\n");
182 fprintf(tmon_log, "Samples TargetTemp ");
183 for (i = 0; i < ptdata.nr_tz_sensor; i++) {
184 fprintf(tmon_log, "%s%d ", ptdata.tzi[i].type,
185 ptdata.tzi[i].instance);
186 }
187 for (i = 0; i < ptdata.nr_cooling_dev; i++)
188 fprintf(tmon_log, "%s%d ", ptdata.cdi[i].type,
189 ptdata.cdi[i].instance);
190
191 fprintf(tmon_log, "\n");
192}
193
194static struct option opts[] = {
195 { "control", 1, NULL, 'c' },
196 { "daemon", 0, NULL, 'd' },
197 { "time-interval", 1, NULL, 't' },
198 { "log", 0, NULL, 'l' },
199 { "help", 0, NULL, 'h' },
200 { "version", 0, NULL, 'v' },
201 { "debug", 0, NULL, 'g' },
202 { 0, 0, NULL, 0 }
203};
204
205
206int main(int argc, char **argv)
207{
208 int err = 0;
209 int id2 = 0, c;
210 double yk = 0.0; /* controller output */
211 int target_tz_index;
212
213 if (geteuid() != 0) {
214 printf("TMON needs to be run as root\n");
215 exit(EXIT_FAILURE);
216 }
217
218 while ((c = getopt_long(argc, argv, "c:dlht:vgz:", opts, &id2)) != -1) {
219 switch (c) {
220 case 'c':
221 no_control = 0;
222 strncpy(ctrl_cdev, optarg, CDEV_NAME_SIZE);
223 break;
224 case 'd':
225 start_daemon_mode();
226 printf("Run TMON in daemon mode\n");
227 break;
228 case 't':
229 ticktime = strtod(optarg, NULL);
230 if (ticktime < 1)
231 ticktime = 1;
232 break;
233 case 'l':
234 printf("Logging data to /var/tmp/tmon.log\n");
235 logging = 1;
236 break;
237 case 'h':
238 usage();
239 break;
240 case 'v':
241 version();
242 break;
243 case 'g':
244 debug_on = 1;
245 break;
246 case 'z':
247 target_thermal_zone = strtod(optarg, NULL);
248 break;
249 default:
250 break;
251 }
252 }
253 if (pthread_mutex_init(&input_lock, NULL) != 0) {
254 fprintf(stderr, "\n mutex init failed, exit\n");
255 return 1;
256 }
257 start_syslog();
258 if (signal(SIGINT, tmon_sig_handler) == SIG_ERR)
259 syslog(LOG_DEBUG, "Cannot handle SIGINT\n");
260 if (signal(SIGTERM, tmon_sig_handler) == SIG_ERR)
261 syslog(LOG_DEBUG, "Cannot handle SIGINT\n");
262
263 if (probe_thermal_sysfs()) {
264 pthread_mutex_destroy(&input_lock);
265 closelog();
266 return -1;
267 }
268 initialize_curses();
269 setup_windows();
270 signal(SIGWINCH, resize_handler);
271 show_title_bar();
272 show_sensors_w();
273 show_cooling_device();
274 update_thermal_data();
275 show_data_w();
276 prepare_logging();
277 init_thermal_controller();
278
279 nodelay(stdscr, TRUE);
280 err = pthread_create(&event_tid, NULL, &handle_tui_events, NULL);
281 if (err != 0) {
282 printf("\ncan't create thread :[%s]", strerror(err));
283 tmon_cleanup();
284 exit(EXIT_FAILURE);
285 }
286
287 /* validate range of user selected target zone, default to the first
288 * instance if out of range
289 */
290 target_tz_index = zone_instance_to_index(target_thermal_zone);
291 if (target_tz_index < 0) {
292 target_thermal_zone = ptdata.tzi[0].instance;
293 syslog(LOG_ERR, "target zone is not found, default to %d\n",
294 target_thermal_zone);
295 }
296 while (1) {
297 sleep(ticktime);
298 show_title_bar();
299 show_sensors_w();
300 update_thermal_data();
301 if (!dialogue_on) {
302 show_data_w();
303 show_cooling_device();
304 }
305 cur_thermal_record++;
306 time_elapsed += ticktime;
307 controller_handler(trec[0].temp[target_tz_index] / 1000,
308 &yk);
309 trec[0].pid_out_pct = yk;
310 if (!dialogue_on)
311 show_control_w();
312 if (tmon_exit)
313 break;
314 }
315 tmon_cleanup();
316 return 0;
317}
318
319static void start_daemon_mode()
320{
321 daemon_mode = 1;
322 /* fork */
323 pid_t sid, pid = fork();
324 if (pid < 0) {
325 exit(EXIT_FAILURE);
326 } else if (pid > 0)
327 /* kill parent */
328 exit(EXIT_SUCCESS);
329
330 /* disable TUI, it may not be necessary, but saves some resource */
331 disable_tui();
332
333 /* change the file mode mask */
334 umask(0);
335
336 /* new SID for the daemon process */
337 sid = setsid();
338 if (sid < 0)
339 exit(EXIT_FAILURE);
340
341 /* change working directory */
342 if ((chdir("/")) < 0)
343 exit(EXIT_FAILURE);
344
345
346 sleep(10);
347
348 close(STDIN_FILENO);
349 close(STDOUT_FILENO);
350 close(STDERR_FILENO);
351
352}
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