[linux-block.git] / tools / power / cpupower / utils / idle_monitor / cpupower-monitor.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  (C) 2010,2011       Thomas Renninger <trenn@suse.de>, Novell Inc.
 *
 *  Output format inspired by Len Brown's <lenb@kernel.org> turbostat tool.
 */


#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <libgen.h>

#include "idle_monitor/cpupower-monitor.h"
#include "idle_monitor/idle_monitors.h"
#include "helpers/helpers.h"

/* Define pointers to all monitors.  */
#define DEF(x) & x ## _monitor ,
struct cpuidle_monitor *all_monitors[] = {
#include "idle_monitors.def"
0
};

int cpu_count;

static struct cpuidle_monitor *monitors[MONITORS_MAX];
static unsigned int avail_monitors;

static char *progname;

enum operation_mode_e { list = 1, show, show_all };
static int mode;
static int interval = 1;
static char *show_monitors_param;
static struct cpupower_topology cpu_top;
static unsigned int wake_cpus;

/* ToDo: Document this in the manpage */
static char range_abbr[RANGE_MAX] = { 'T', 'C', 'P', 'M', };

static void print_wrong_arg_exit(void)
{
	printf(_("invalid or unknown argument\n"));
	exit(EXIT_FAILURE);
}

long long timespec_diff_us(struct timespec start, struct timespec end)
{
	struct timespec temp;
	if ((end.tv_nsec - start.tv_nsec) < 0) {
		temp.tv_sec = end.tv_sec - start.tv_sec - 1;
		temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
	} else {
		temp.tv_sec = end.tv_sec - start.tv_sec;
		temp.tv_nsec = end.tv_nsec - start.tv_nsec;
	}
	return (temp.tv_sec * 1000000) + (temp.tv_nsec / 1000);
}

void print_n_spaces(int n)
{
	int x;
	for (x = 0; x < n; x++)
		printf(" ");
}

/*s is filled with left and right spaces
 *to make its length atleast n+1
 */
int fill_string_with_spaces(char *s, int n)
{
	char *temp;
	int len = strlen(s);

	if (len >= n)
		return -1;

	temp = malloc(sizeof(char) * (n+1));
	for (; len < n; len++)
		s[len] = ' ';
	s[len] = '\0';
	snprintf(temp, n+1, " %s", s);
	strcpy(s, temp);
	free(temp);
	return 0;
}

#define MAX_COL_WIDTH 6
void print_header(int topology_depth)
{
	int unsigned mon;
	int state, need_len;
	cstate_t s;
	char buf[128] = "";

	fill_string_with_spaces(buf, topology_depth * 5 - 1);
	printf("%s|", buf);

	for (mon = 0; mon < avail_monitors; mon++) {
		need_len = monitors[mon]->hw_states_num * (MAX_COL_WIDTH + 1)
			- 1;
		if (mon != 0)
			printf("||");
		sprintf(buf, "%s", monitors[mon]->name);
		fill_string_with_spaces(buf, need_len);
		printf("%s", buf);
	}
	printf("\n");

	if (topology_depth > 2)
		printf(" PKG|");
	if (topology_depth > 1)
		printf("CORE|");
	if (topology_depth > 0)
		printf(" CPU|");

	for (mon = 0; mon < avail_monitors; mon++) {
		if (mon != 0)
			printf("||");
		for (state = 0; state < monitors[mon]->hw_states_num; state++) {
			if (state != 0)
				printf("|");
			s = monitors[mon]->hw_states[state];
			sprintf(buf, "%s", s.name);
			fill_string_with_spaces(buf, MAX_COL_WIDTH);
			printf("%s", buf);
		}
		printf(" ");
	}
	printf("\n");
}


void print_results(int topology_depth, int cpu)
{
	unsigned int mon;
	int state, ret;
	double percent;
	unsigned long long result;
	cstate_t s;

	/* Be careful CPUs may got resorted for pkg value do not just use cpu */
	if (!bitmask_isbitset(cpus_chosen, cpu_top.core_info[cpu].cpu))
		return;
	if (!cpu_top.core_info[cpu].is_online &&
	    cpu_top.core_info[cpu].pkg == -1)
		return;

	if (topology_depth > 2)
		printf("%4d|", cpu_top.core_info[cpu].pkg);
	if (topology_depth > 1)
		printf("%4d|", cpu_top.core_info[cpu].core);
	if (topology_depth > 0)
		printf("%4d|", cpu_top.core_info[cpu].cpu);

	for (mon = 0; mon < avail_monitors; mon++) {
		if (mon != 0)
			printf("||");

		for (state = 0; state < monitors[mon]->hw_states_num; state++) {
			if (state != 0)
				printf("|");

			s = monitors[mon]->hw_states[state];

			if (s.get_count_percent) {
				ret = s.get_count_percent(s.id, &percent,
						  cpu_top.core_info[cpu].cpu);
				if (ret)
					printf("******");
				else if (percent >= 100.0)
					printf("%6.1f", percent);
				else
					printf("%6.2f", percent);
			} else if (s.get_count) {
				ret = s.get_count(s.id, &result,
						  cpu_top.core_info[cpu].cpu);
				if (ret)
					printf("******");
				else
					printf("%6llu", result);
			} else {
				printf(_("Monitor %s, Counter %s has no count "
					 "function. Implementation error\n"),
				       monitors[mon]->name, s.name);
				exit(EXIT_FAILURE);
			}
		}
	}
	/*
	 * The monitor could still provide useful data, for example
	 * AMD HW counters partly sit in PCI config space.
	 * It's up to the monitor plug-in to check .is_online, this one
	 * is just for additional info.
	 */
	if (!cpu_top.core_info[cpu].is_online &&
	    cpu_top.core_info[cpu].pkg != -1) {
		printf(_(" *is offline\n"));
		return;
	} else
		printf("\n");
}


/* param: string passed by -m param (The list of monitors to show)
 *
 * Monitors must have been registered already, matching monitors
 * are picked out and available monitors array is overridden
 * with matching ones
 *
 * Monitors get sorted in the same order the user passes them
*/

static void parse_monitor_param(char *param)
{
	unsigned int num;
	int mon, hits = 0;
	char *tmp = param, *token;
	struct cpuidle_monitor *tmp_mons[MONITORS_MAX];


	for (mon = 0; mon < MONITORS_MAX; mon++, tmp = NULL) {
		token = strtok(tmp, ",");
		if (token == NULL)
			break;
		if (strlen(token) >= MONITOR_NAME_LEN) {
			printf(_("%s: max monitor name length"
				 " (%d) exceeded\n"), token, MONITOR_NAME_LEN);
			continue;
		}

		for (num = 0; num < avail_monitors; num++) {
			if (!strcmp(monitors[num]->name, token)) {
				dprint("Found requested monitor: %s\n", token);
				tmp_mons[hits] = monitors[num];
				hits++;
			}
		}
	}
	if (hits == 0) {
		printf(_("No matching monitor found in %s, "
			 "try -l option\n"), param);
		exit(EXIT_FAILURE);
	}
	/* Override detected/registerd monitors array with requested one */
	memcpy(monitors, tmp_mons,
		sizeof(struct cpuidle_monitor *) * MONITORS_MAX);
	avail_monitors = hits;
}

void list_monitors(void)
{
	unsigned int mon;
	int state;
	cstate_t s;

	for (mon = 0; mon < avail_monitors; mon++) {
		printf(_("Monitor \"%s\" (%d states) - Might overflow after %u "
			 "s\n"),
			monitors[mon]->name, monitors[mon]->hw_states_num,
			monitors[mon]->overflow_s);

		for (state = 0; state < monitors[mon]->hw_states_num; state++) {
			s = monitors[mon]->hw_states[state];
			/*
			 * ToDo show more state capabilities:
			 * percent, time (granlarity)
			 */
			printf("%s\t[%c] -> %s\n", s.name, range_abbr[s.range],
			       gettext(s.desc));
		}
	}
}

int fork_it(char **argv)
{
	int status;
	unsigned int num;
	unsigned long long timediff;
	pid_t child_pid;
	struct timespec start, end;

	child_pid = fork();
	clock_gettime(CLOCK_REALTIME, &start);

	for (num = 0; num < avail_monitors; num++)
		monitors[num]->start();

	if (!child_pid) {
		/* child */
		execvp(argv[0], argv);
	} else {
		/* parent */
		if (child_pid == -1) {
			perror("fork");
			exit(1);
		}

		signal(SIGINT, SIG_IGN);
		signal(SIGQUIT, SIG_IGN);
		if (waitpid(child_pid, &status, 0) == -1) {
			perror("wait");
			exit(1);
		}
	}
	clock_gettime(CLOCK_REALTIME, &end);
	for (num = 0; num < avail_monitors; num++)
		monitors[num]->stop();

	timediff = timespec_diff_us(start, end);
	if (WIFEXITED(status))
		printf(_("%s took %.5f seconds and exited with status %d\n"),
			argv[0], timediff / (1000.0 * 1000),
			WEXITSTATUS(status));
	return 0;
}

int do_interval_measure(int i)
{
	unsigned int num;
	int cpu;

	if (wake_cpus)
		for (cpu = 0; cpu < cpu_count; cpu++)
			bind_cpu(cpu);

	for (num = 0; num < avail_monitors; num++) {
		dprint("HW C-state residency monitor: %s - States: %d\n",
		       monitors[num]->name, monitors[num]->hw_states_num);
		monitors[num]->start();
	}

	sleep(i);

	if (wake_cpus)
		for (cpu = 0; cpu < cpu_count; cpu++)
			bind_cpu(cpu);

	for (num = 0; num < avail_monitors; num++)
		monitors[num]->stop();


	return 0;
}

static void cmdline(int argc, char *argv[])
{
	int opt;
	progname = basename(argv[0]);

	while ((opt = getopt(argc, argv, "+lci:m:")) != -1) {
		switch (opt) {
		case 'l':
			if (mode)
				print_wrong_arg_exit();
			mode = list;
			break;
		case 'i':
			/* only allow -i with -m or no option */
			if (mode && mode != show)
				print_wrong_arg_exit();
			interval = atoi(optarg);
			break;
		case 'm':
			if (mode)
				print_wrong_arg_exit();
			mode = show;
			show_monitors_param = optarg;
			break;
		case 'c':
			wake_cpus = 1;
			break;
		default:
			print_wrong_arg_exit();
		}
	}
	if (!mode)
		mode = show_all;
}

int cmd_monitor(int argc, char **argv)
{
	unsigned int num;
	struct cpuidle_monitor *test_mon;
	int cpu;

	cmdline(argc, argv);
	cpu_count = get_cpu_topology(&cpu_top);
	if (cpu_count < 0) {
		printf(_("Cannot read number of available processors\n"));
		return EXIT_FAILURE;
	}

	if (!cpu_top.core_info[0].is_online)
		printf("WARNING: at least one cpu is offline\n");

	/* Default is: monitor all CPUs */
	if (bitmask_isallclear(cpus_chosen))
		bitmask_setall(cpus_chosen);

	dprint("System has up to %d CPU cores\n", cpu_count);

	for (num = 0; all_monitors[num]; num++) {
		dprint("Try to register: %s\n", all_monitors[num]->name);
		test_mon = all_monitors[num]->do_register();
		if (test_mon) {
			if (test_mon->flags.needs_root && !run_as_root) {
				fprintf(stderr, _("Available monitor %s needs "
					  "root access\n"), test_mon->name);
				continue;
			}
			monitors[avail_monitors] = test_mon;
			dprint("%s registered\n", all_monitors[num]->name);
			avail_monitors++;
		}
	}

	if (avail_monitors == 0) {
		printf(_("No HW Cstate monitors found\n"));
		return 1;
	}

	if (mode == list) {
		list_monitors();
		exit(EXIT_SUCCESS);
	}

	if (mode == show)
		parse_monitor_param(show_monitors_param);

	dprint("Packages: %d - Cores: %d - CPUs: %d\n",
	       cpu_top.pkgs, cpu_top.cores, cpu_count);

	/*
	 * if any params left, it must be a command to fork
	 */
	if (argc - optind)
		fork_it(argv + optind);
	else
		do_interval_measure(interval);

	/* ToDo: Topology parsing needs fixing first to do
	   this more generically */
	if (cpu_top.pkgs > 1)
		print_header(3);
	else
		print_header(1);

	for (cpu = 0; cpu < cpu_count; cpu++) {
		if (cpu_top.pkgs > 1)
			print_results(3, cpu);
		else
			print_results(1, cpu);
	}

	for (num = 0; num < avail_monitors; num++)
		monitors[num]->unregister();

	cpu_topology_release(cpu_top);
	return 0;
}
Commit	Line	Data
4f19048f	1	// SPDX-License-Identifier: GPL-2.0-only
7fe2f639 DB	2	/*
	3	* (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
	4	*
7fe2f639	5	* Output format inspired by Len Brown's <lenb@kernel.org> turbostat tool.
7fe2f639 DB	6	*/
	7
	8
	9	#include <stdio.h>
	10	#include <unistd.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <time.h>
	14	#include <signal.h>
	15	#include <sys/types.h>
	16	#include <sys/wait.h>
	17	#include <libgen.h>
	18
	19	#include "idle_monitor/cpupower-monitor.h"
	20	#include "idle_monitor/idle_monitors.h"
	21	#include "helpers/helpers.h"
	22
	23	/* Define pointers to all monitors. */
	24	#define DEF(x) & x ## _monitor ,
b510b541	25	struct cpuidle_monitor *all_monitors[] = {
7fe2f639 DB	26	#include "idle_monitors.def"
	27	0
	28	};
	29
2de7fb60 MG	30	int cpu_count;
2de7fb60 MG	31
7fe2f639 DB	32	static struct cpuidle_monitor *monitors[MONITORS_MAX];
	33	static unsigned int avail_monitors;
	34
	35	static char *progname;
	36
	37	enum operation_mode_e { list = 1, show, show_all };
	38	static int mode;
	39	static int interval = 1;
	40	static char *show_monitors_param;
	41	static struct cpupower_topology cpu_top;
c8cfc3c6	42	static unsigned int wake_cpus;
7fe2f639 DB	43
	44	/* ToDo: Document this in the manpage */
	45	static char range_abbr[RANGE_MAX] = { 'T', 'C', 'P', 'M', };
	46
498ca793 DB	47	static void print_wrong_arg_exit(void)
	48	{
	49	printf(_("invalid or unknown argument\n"));
	50	exit(EXIT_FAILURE);
	51	}
	52
7fe2f639 DB	53	long long timespec_diff_us(struct timespec start, struct timespec end)
	54	{
	55	struct timespec temp;
	56	if ((end.tv_nsec - start.tv_nsec) < 0) {
	57	temp.tv_sec = end.tv_sec - start.tv_sec - 1;
	58	temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
	59	} else {
	60	temp.tv_sec = end.tv_sec - start.tv_sec;
	61	temp.tv_nsec = end.tv_nsec - start.tv_nsec;
	62	}
	63	return (temp.tv_sec * 1000000) + (temp.tv_nsec / 1000);
	64	}
	65
7fe2f639 DB	66	void print_n_spaces(int n)
	67	{
	68	int x;
	69	for (x = 0; x < n; x++)
	70	printf(" ");
b510b541	71	}
7fe2f639	72
f9652d5c AG	73	/*s is filled with left and right spaces
	74	*to make its length atleast n+1
	75	*/
7fe2f639 DB	76	int fill_string_with_spaces(char *s, int n)
7fe2f639 DB	77	{
f9652d5c	78	char *temp;
b510b541	79	int len = strlen(s);
f9652d5c AG	80
f9652d5c AG	81	if (len >= n)
7fe2f639	82	return -1;
f9652d5c AG	83
f9652d5c AG	84	temp = malloc(sizeof(char) * (n+1));
b510b541 DB	85	for (; len < n; len++)
	86	s[len] = ' ';
	87	s[len] = '\0';
f9652d5c AG	88	snprintf(temp, n+1, " %s", s);
	89	strcpy(s, temp);
	90	free(temp);
7fe2f639	91	return 0;
b510b541	92	}
7fe2f639	93
f9652d5c	94	#define MAX_COL_WIDTH 6
7fe2f639 DB	95	void print_header(int topology_depth)
	96	{
	97	int unsigned mon;
fb8eaeb7	98	int state, need_len;
7fe2f639 DB	99	cstate_t s;
7fe2f639 DB	100	char buf[128] = "";
7fe2f639 DB	101
	102	fill_string_with_spaces(buf, topology_depth * 5 - 1);
	103	printf("%s\|", buf);
	104
	105	for (mon = 0; mon < avail_monitors; mon++) {
f9652d5c	106	need_len = monitors[mon]->hw_states_num * (MAX_COL_WIDTH + 1)
7fe2f639	107	- 1;
f9652d5c AG	108	if (mon != 0)
f9652d5c AG	109	printf("\|\|");
7fe2f639 DB	110	sprintf(buf, "%s", monitors[mon]->name);
	111	fill_string_with_spaces(buf, need_len);
	112	printf("%s", buf);
	113	}
	114	printf("\n");
	115
	116	if (topology_depth > 2)
f9652d5c	117	printf(" PKG\|");
7fe2f639 DB	118	if (topology_depth > 1)
	119	printf("CORE\|");
	120	if (topology_depth > 0)
f9652d5c	121	printf(" CPU\|");
7fe2f639 DB	122
	123	for (mon = 0; mon < avail_monitors; mon++) {
	124	if (mon != 0)
f9652d5c	125	printf("\|\|");
7fe2f639 DB	126	for (state = 0; state < monitors[mon]->hw_states_num; state++) {
7fe2f639 DB	127	if (state != 0)
f9652d5c	128	printf("\|");
7fe2f639 DB	129	s = monitors[mon]->hw_states[state];
7fe2f639 DB	130	sprintf(buf, "%s", s.name);
f9652d5c	131	fill_string_with_spaces(buf, MAX_COL_WIDTH);
7fe2f639 DB	132	printf("%s", buf);
	133	}
	134	printf(" ");
	135	}
	136	printf("\n");
	137	}
	138
	139
	140	void print_results(int topology_depth, int cpu)
	141	{
	142	unsigned int mon;
	143	int state, ret;
	144	double percent;
	145	unsigned long long result;
	146	cstate_t s;
	147
9ee31f61 TR	148	/* Be careful CPUs may got resorted for pkg value do not just use cpu */
	149	if (!bitmask_isbitset(cpus_chosen, cpu_top.core_info[cpu].cpu))
	150	return;
20102ac5 JT	151	if (!cpu_top.core_info[cpu].is_online &&
	152	cpu_top.core_info[cpu].pkg == -1)
	153	return;
9ee31f61	154
7fe2f639 DB	155	if (topology_depth > 2)
	156	printf("%4d\|", cpu_top.core_info[cpu].pkg);
	157	if (topology_depth > 1)
	158	printf("%4d\|", cpu_top.core_info[cpu].core);
	159	if (topology_depth > 0)
	160	printf("%4d\|", cpu_top.core_info[cpu].cpu);
	161
	162	for (mon = 0; mon < avail_monitors; mon++) {
	163	if (mon != 0)
	164	printf("\|\|");
	165
	166	for (state = 0; state < monitors[mon]->hw_states_num; state++) {
	167	if (state != 0)
	168	printf("\|");
	169
	170	s = monitors[mon]->hw_states[state];
	171
	172	if (s.get_count_percent) {
	173	ret = s.get_count_percent(s.id, &percent,
	174	cpu_top.core_info[cpu].cpu);
b510b541	175	if (ret)
7fe2f639	176	printf("******");
b510b541	177	else if (percent >= 100.0)
7fe2f639 DB	178	printf("%6.1f", percent);
	179	else
	180	printf("%6.2f", percent);
b510b541	181	} else if (s.get_count) {
7fe2f639 DB	182	ret = s.get_count(s.id, &result,
7fe2f639 DB	183	cpu_top.core_info[cpu].cpu);
b510b541	184	if (ret)
7fe2f639	185	printf("******");
b510b541	186	else
7fe2f639	187	printf("%6llu", result);
b510b541	188	} else {
7fe2f639 DB	189	printf(_("Monitor %s, Counter %s has no count "
	190	"function. Implementation error\n"),
	191	monitors[mon]->name, s.name);
b510b541	192	exit(EXIT_FAILURE);
7fe2f639 DB	193	}
	194	}
	195	}
7c74d2bc TR	196	/*
	197	* The monitor could still provide useful data, for example
	198	* AMD HW counters partly sit in PCI config space.
	199	* It's up to the monitor plug-in to check .is_online, this one
	200	* is just for additional info.
	201	*/
20102ac5 JT	202	if (!cpu_top.core_info[cpu].is_online &&
20102ac5 JT	203	cpu_top.core_info[cpu].pkg != -1) {
7fe2f639 DB	204	printf(_(" *is offline\n"));
	205	return;
	206	} else
	207	printf("\n");
	208	}
	209
	210
	211	/* param: string passed by -m param (The list of monitors to show)
	212	*
	213	* Monitors must have been registered already, matching monitors
	214	* are picked out and available monitors array is overridden
	215	* with matching ones
	216	*
	217	* Monitors get sorted in the same order the user passes them
	218	*/
	219
b510b541	220	static void parse_monitor_param(char *param)
7fe2f639 DB	221	{
	222	unsigned int num;
	223	int mon, hits = 0;
	224	char tmp = param, token;
	225	struct cpuidle_monitor *tmp_mons[MONITORS_MAX];
	226
	227
b510b541	228	for (mon = 0; mon < MONITORS_MAX; mon++, tmp = NULL) {
7fe2f639 DB	229	token = strtok(tmp, ",");
	230	if (token == NULL)
	231	break;
	232	if (strlen(token) >= MONITOR_NAME_LEN) {
	233	printf(_("%s: max monitor name length"
	234	" (%d) exceeded\n"), token, MONITOR_NAME_LEN);
	235	continue;
	236	}
	237
	238	for (num = 0; num < avail_monitors; num++) {
	239	if (!strcmp(monitors[num]->name, token)) {
	240	dprint("Found requested monitor: %s\n", token);
	241	tmp_mons[hits] = monitors[num];
	242	hits++;
	243	}
b510b541	244	}
7fe2f639 DB	245	}
	246	if (hits == 0) {
	247	printf(_("No matching monitor found in %s, "
	248	"try -l option\n"), param);
7fe2f639 DB	249	exit(EXIT_FAILURE);
	250	}
	251	/* Override detected/registerd monitors array with requested one */
b510b541 DB	252	memcpy(monitors, tmp_mons,
b510b541 DB	253	sizeof(struct cpuidle_monitor ) MONITORS_MAX);
7fe2f639 DB	254	avail_monitors = hits;
	255	}
	256
b510b541 DB	257	void list_monitors(void)
b510b541 DB	258	{
7fe2f639 DB	259	unsigned int mon;
	260	int state;
	261	cstate_t s;
	262
	263	for (mon = 0; mon < avail_monitors; mon++) {
	264	printf(_("Monitor \"%s\" (%d states) - Might overflow after %u "
b510b541 DB	265	"s\n"),
	266	monitors[mon]->name, monitors[mon]->hw_states_num,
	267	monitors[mon]->overflow_s);
	268
7fe2f639 DB	269	for (state = 0; state < monitors[mon]->hw_states_num; state++) {
	270	s = monitors[mon]->hw_states[state];
	271	/*
	272	* ToDo show more state capabilities:
	273	* percent, time (granlarity)
	274	*/
	275	printf("%s\t[%c] -> %s\n", s.name, range_abbr[s.range],
	276	gettext(s.desc));
	277	}
	278	}
	279	}
	280
	281	int fork_it(char **argv)
	282	{
	283	int status;
	284	unsigned int num;
	285	unsigned long long timediff;
	286	pid_t child_pid;
	287	struct timespec start, end;
	288
	289	child_pid = fork();
	290	clock_gettime(CLOCK_REALTIME, &start);
	291
	292	for (num = 0; num < avail_monitors; num++)
	293	monitors[num]->start();
	294
	295	if (!child_pid) {
	296	/* child */
	297	execvp(argv[0], argv);
	298	} else {
	299	/* parent */
	300	if (child_pid == -1) {
	301	perror("fork");
	302	exit(1);
	303	}
	304
	305	signal(SIGINT, SIG_IGN);
	306	signal(SIGQUIT, SIG_IGN);
	307	if (waitpid(child_pid, &status, 0) == -1) {
	308	perror("wait");
	309	exit(1);
	310	}
	311	}
	312	clock_gettime(CLOCK_REALTIME, &end);
	313	for (num = 0; num < avail_monitors; num++)
	314	monitors[num]->stop();
	315
	316	timediff = timespec_diff_us(start, end);
	317	if (WIFEXITED(status))
	318	printf(_("%s took %.5f seconds and exited with status %d\n"),
b510b541 DB	319	argv[0], timediff / (1000.0 * 1000),
b510b541 DB	320	WEXITSTATUS(status));
7fe2f639 DB	321	return 0;
	322	}
	323
	324	int do_interval_measure(int i)
	325	{
	326	unsigned int num;
c8cfc3c6 TR	327	int cpu;
	328
	329	if (wake_cpus)
	330	for (cpu = 0; cpu < cpu_count; cpu++)
	331	bind_cpu(cpu);
7fe2f639 DB	332
	333	for (num = 0; num < avail_monitors; num++) {
	334	dprint("HW C-state residency monitor: %s - States: %d\n",
	335	monitors[num]->name, monitors[num]->hw_states_num);
	336	monitors[num]->start();
	337	}
c8cfc3c6	338
7fe2f639	339	sleep(i);
c8cfc3c6 TR	340
	341	if (wake_cpus)
	342	for (cpu = 0; cpu < cpu_count; cpu++)
	343	bind_cpu(cpu);
	344
b510b541	345	for (num = 0; num < avail_monitors; num++)
7fe2f639	346	monitors[num]->stop();
b510b541	347
c8cfc3c6	348
7fe2f639 DB	349	return 0;
	350	}
	351
	352	static void cmdline(int argc, char *argv[])
	353	{
	354	int opt;
	355	progname = basename(argv[0]);
	356
c8cfc3c6	357	while ((opt = getopt(argc, argv, "+lci:m:")) != -1) {
7fe2f639	358	switch (opt) {
7fe2f639	359	case 'l':
498ca793 DB	360	if (mode)
498ca793 DB	361	print_wrong_arg_exit();
7fe2f639 DB	362	mode = list;
	363	break;
	364	case 'i':
	365	/* only allow -i with -m or no option */
498ca793 DB	366	if (mode && mode != show)
498ca793 DB	367	print_wrong_arg_exit();
7fe2f639 DB	368	interval = atoi(optarg);
	369	break;
	370	case 'm':
498ca793 DB	371	if (mode)
498ca793 DB	372	print_wrong_arg_exit();
7fe2f639 DB	373	mode = show;
	374	show_monitors_param = optarg;
	375	break;
c8cfc3c6 TR	376	case 'c':
	377	wake_cpus = 1;
	378	break;
7fe2f639	379	default:
498ca793	380	print_wrong_arg_exit();
7fe2f639 DB	381	}
	382	}
	383	if (!mode)
	384	mode = show_all;
	385	}
	386
	387	int cmd_monitor(int argc, char **argv)
	388	{
	389	unsigned int num;
	390	struct cpuidle_monitor *test_mon;
	391	int cpu;
	392
	393	cmdline(argc, argv);
	394	cpu_count = get_cpu_topology(&cpu_top);
	395	if (cpu_count < 0) {
	396	printf(_("Cannot read number of available processors\n"));
	397	return EXIT_FAILURE;
	398	}
	399
20102ac5 JT	400	if (!cpu_top.core_info[0].is_online)
	401	printf("WARNING: at least one cpu is offline\n");
	402
9ee31f61 TR	403	/* Default is: monitor all CPUs */
	404	if (bitmask_isallclear(cpus_chosen))
	405	bitmask_setall(cpus_chosen);
	406
7fe2f639	407	dprint("System has up to %d CPU cores\n", cpu_count);
b510b541	408
7fe2f639 DB	409	for (num = 0; all_monitors[num]; num++) {
	410	dprint("Try to register: %s\n", all_monitors[num]->name);
	411	test_mon = all_monitors[num]->do_register();
	412	if (test_mon) {
d3f5d2a1	413	if (test_mon->flags.needs_root && !run_as_root) {
7fe2f639 DB	414	fprintf(stderr, _("Available monitor %s needs "
	415	"root access\n"), test_mon->name);
	416	continue;
	417	}
	418	monitors[avail_monitors] = test_mon;
	419	dprint("%s registered\n", all_monitors[num]->name);
	420	avail_monitors++;
	421	}
	422	}
	423
	424	if (avail_monitors == 0) {
	425	printf(_("No HW Cstate monitors found\n"));
	426	return 1;
	427	}
	428
	429	if (mode == list) {
	430	list_monitors();
	431	exit(EXIT_SUCCESS);
	432	}
	433
	434	if (mode == show)
	435	parse_monitor_param(show_monitors_param);
	436
	437	dprint("Packages: %d - Cores: %d - CPUs: %d\n",
	438	cpu_top.pkgs, cpu_top.cores, cpu_count);
	439
	440	/*
	441	* if any params left, it must be a command to fork
	442	*/
	443	if (argc - optind)
	444	fork_it(argv + optind);
	445	else
	446	do_interval_measure(interval);
	447
	448	/* ToDo: Topology parsing needs fixing first to do
	449	this more generically */
	450	if (cpu_top.pkgs > 1)
	451	print_header(3);
	452	else
	453	print_header(1);
	454
	455	for (cpu = 0; cpu < cpu_count; cpu++) {
	456	if (cpu_top.pkgs > 1)
	457	print_results(3, cpu);
	458	else
	459	print_results(1, cpu);
	460	}
	461
b510b541	462	for (num = 0; num < avail_monitors; num++)
7fe2f639	463	monitors[num]->unregister();
b510b541	464
7fe2f639 DB	465	cpu_topology_release(cpu_top);
	466	return 0;
	467	}