Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 83ec6e482f12b199b664e8867f9da7be7aaacf7f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * tmon.c Thermal Monitor (TMON) main function and entry point
 *
 * Copyright (C) 2012 Intel Corporation. All rights reserved.
 *
 * 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);

}