342 lines
7.4 KiB
C
342 lines
7.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Thermal monitoring tool based on the thermal netlink events.
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*
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* Copyright (C) 2022 Linaro Ltd.
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*
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* Author: Daniel Lezcano <daniel.lezcano@kernel.org>
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <sys/epoll.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <thermal.h>
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#include "thermal-tools.h"
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struct options {
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int loglevel;
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int logopt;
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int interactive;
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int daemonize;
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};
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struct thermal_data {
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struct thermal_zone *tz;
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struct thermal_handler *th;
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};
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static int show_trip(struct thermal_trip *tt, __maybe_unused void *arg)
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{
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INFO("trip id=%d, type=%d, temp=%d, hyst=%d\n",
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tt->id, tt->type, tt->temp, tt->hyst);
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return 0;
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}
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static int show_temp(struct thermal_zone *tz, __maybe_unused void *arg)
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{
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thermal_cmd_get_temp(arg, tz);
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INFO("temperature: %d\n", tz->temp);
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return 0;
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}
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static int show_governor(struct thermal_zone *tz, __maybe_unused void *arg)
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{
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thermal_cmd_get_governor(arg, tz);
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INFO("governor: '%s'\n", tz->governor);
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return 0;
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}
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static int show_tz(struct thermal_zone *tz, __maybe_unused void *arg)
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{
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INFO("thermal zone '%s', id=%d\n", tz->name, tz->id);
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for_each_thermal_trip(tz->trip, show_trip, NULL);
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show_temp(tz, arg);
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show_governor(tz, arg);
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return 0;
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}
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static int tz_create(const char *name, int tz_id, __maybe_unused void *arg)
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{
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INFO("Thermal zone '%s'/%d created\n", name, tz_id);
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return 0;
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}
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static int tz_delete(int tz_id, __maybe_unused void *arg)
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{
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INFO("Thermal zone %d deleted\n", tz_id);
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return 0;
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}
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static int tz_disable(int tz_id, void *arg)
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{
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struct thermal_data *td = arg;
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struct thermal_zone *tz = thermal_zone_find_by_id(td->tz, tz_id);
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INFO("Thermal zone %d ('%s') disabled\n", tz_id, tz->name);
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return 0;
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}
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static int tz_enable(int tz_id, void *arg)
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{
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struct thermal_data *td = arg;
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struct thermal_zone *tz = thermal_zone_find_by_id(td->tz, tz_id);
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INFO("Thermal zone %d ('%s') enabled\n", tz_id, tz->name);
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return 0;
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}
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static int trip_high(int tz_id, int trip_id, int temp, void *arg)
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{
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struct thermal_data *td = arg;
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struct thermal_zone *tz = thermal_zone_find_by_id(td->tz, tz_id);
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INFO("Thermal zone %d ('%s'): trip point %d crossed way up with %d °C\n",
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tz_id, tz->name, trip_id, temp);
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return 0;
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}
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static int trip_low(int tz_id, int trip_id, int temp, void *arg)
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{
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struct thermal_data *td = arg;
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struct thermal_zone *tz = thermal_zone_find_by_id(td->tz, tz_id);
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INFO("Thermal zone %d ('%s'): trip point %d crossed way down with %d °C\n",
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tz_id, tz->name, trip_id, temp);
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return 0;
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}
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static int trip_add(int tz_id, int trip_id, int type, int temp, int hyst, __maybe_unused void *arg)
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{
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INFO("Trip point added %d: id=%d, type=%d, temp=%d, hyst=%d\n",
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tz_id, trip_id, type, temp, hyst);
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return 0;
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}
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static int trip_delete(int tz_id, int trip_id, __maybe_unused void *arg)
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{
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INFO("Trip point deleted %d: id=%d\n", tz_id, trip_id);
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return 0;
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}
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static int trip_change(int tz_id, int trip_id, int type, int temp,
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int hyst, __maybe_unused void *arg)
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{
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struct thermal_data *td = arg;
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struct thermal_zone *tz = thermal_zone_find_by_id(td->tz, tz_id);
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INFO("Trip point changed %d: id=%d, type=%d, temp=%d, hyst=%d\n",
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tz_id, trip_id, type, temp, hyst);
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tz->trip[trip_id].type = type;
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tz->trip[trip_id].temp = temp;
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tz->trip[trip_id].hyst = hyst;
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return 0;
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}
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static int cdev_add(const char *name, int cdev_id, int max_state, __maybe_unused void *arg)
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{
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INFO("Cooling device '%s'/%d (max state=%d) added\n", name, cdev_id, max_state);
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return 0;
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}
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static int cdev_delete(int cdev_id, __maybe_unused void *arg)
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{
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INFO("Cooling device %d deleted", cdev_id);
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return 0;
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}
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static int cdev_update(int cdev_id, int cur_state, __maybe_unused void *arg)
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{
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INFO("cdev:%d state:%d\n", cdev_id, cur_state);
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return 0;
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}
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static int gov_change(int tz_id, const char *name, __maybe_unused void *arg)
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{
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struct thermal_data *td = arg;
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struct thermal_zone *tz = thermal_zone_find_by_id(td->tz, tz_id);
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INFO("%s: governor changed %s -> %s\n", tz->name, tz->governor, name);
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strcpy(tz->governor, name);
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return 0;
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}
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static struct thermal_ops ops = {
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.events.tz_create = tz_create,
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.events.tz_delete = tz_delete,
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.events.tz_disable = tz_disable,
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.events.tz_enable = tz_enable,
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.events.trip_high = trip_high,
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.events.trip_low = trip_low,
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.events.trip_add = trip_add,
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.events.trip_delete = trip_delete,
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.events.trip_change = trip_change,
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.events.cdev_add = cdev_add,
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.events.cdev_delete = cdev_delete,
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.events.cdev_update = cdev_update,
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.events.gov_change = gov_change
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};
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static int thermal_event(__maybe_unused int fd, __maybe_unused void *arg)
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{
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struct thermal_data *td = arg;
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return thermal_events_handle(td->th, td);
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}
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static void usage(const char *cmd)
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{
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printf("%s : A thermal monitoring engine based on notifications\n", cmd);
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printf("Usage: %s [options]\n", cmd);
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printf("\t-h, --help\t\tthis help\n");
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printf("\t-d, --daemonize\n");
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printf("\t-l <level>, --loglevel <level>\tlog level: ");
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printf("DEBUG, INFO, NOTICE, WARN, ERROR\n");
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printf("\t-s, --syslog\t\toutput to syslog\n");
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printf("\n");
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exit(0);
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}
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static int options_init(int argc, char *argv[], struct options *options)
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{
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int opt;
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struct option long_options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "daemonize", no_argument, NULL, 'd' },
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{ "syslog", no_argument, NULL, 's' },
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{ "loglevel", required_argument, NULL, 'l' },
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{ 0, 0, 0, 0 }
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};
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while (1) {
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int optindex = 0;
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opt = getopt_long(argc, argv, "l:dhs", long_options, &optindex);
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if (opt == -1)
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break;
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switch (opt) {
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case 'l':
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options->loglevel = log_str2level(optarg);
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break;
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case 'd':
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options->daemonize = 1;
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break;
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case 's':
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options->logopt = TO_SYSLOG;
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break;
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case 'h':
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usage(basename(argv[0]));
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break;
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default: /* '?' */
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return -1;
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}
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}
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return 0;
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}
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enum {
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THERMAL_ENGINE_SUCCESS = 0,
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THERMAL_ENGINE_OPTION_ERROR,
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THERMAL_ENGINE_DAEMON_ERROR,
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THERMAL_ENGINE_LOG_ERROR,
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THERMAL_ENGINE_THERMAL_ERROR,
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THERMAL_ENGINE_MAINLOOP_ERROR,
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};
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int main(int argc, char *argv[])
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{
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struct thermal_data td;
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struct options options = {
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.loglevel = LOG_INFO,
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.logopt = TO_STDOUT,
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};
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if (options_init(argc, argv, &options)) {
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ERROR("Usage: %s --help\n", argv[0]);
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return THERMAL_ENGINE_OPTION_ERROR;
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}
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if (options.daemonize && daemon(0, 0)) {
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ERROR("Failed to daemonize: %p\n");
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return THERMAL_ENGINE_DAEMON_ERROR;
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}
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if (log_init(options.loglevel, basename(argv[0]), options.logopt)) {
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ERROR("Failed to initialize logging facility\n");
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return THERMAL_ENGINE_LOG_ERROR;
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}
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td.th = thermal_init(&ops);
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if (!td.th) {
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ERROR("Failed to initialize the thermal library\n");
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return THERMAL_ENGINE_THERMAL_ERROR;
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}
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td.tz = thermal_zone_discover(td.th);
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if (!td.tz) {
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ERROR("No thermal zone available\n");
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return THERMAL_ENGINE_THERMAL_ERROR;
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}
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for_each_thermal_zone(td.tz, show_tz, td.th);
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if (mainloop_init()) {
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ERROR("Failed to initialize the mainloop\n");
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return THERMAL_ENGINE_MAINLOOP_ERROR;
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}
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if (mainloop_add(thermal_events_fd(td.th), thermal_event, &td)) {
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ERROR("Failed to setup the mainloop\n");
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return THERMAL_ENGINE_MAINLOOP_ERROR;
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}
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INFO("Waiting for thermal events ...\n");
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if (mainloop(-1)) {
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ERROR("Mainloop failed\n");
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return THERMAL_ENGINE_MAINLOOP_ERROR;
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}
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return THERMAL_ENGINE_SUCCESS;
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}
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