Commit 2a535d6c authored by Zhang Rui's avatar Zhang Rui Committed by Len Brown
Browse files

tools/power turbostat: Dump RAPL sysfs info 



for example:

intel-rapl:1: psys 28.0s:100W 976.0us:100W
intel-rapl:0: package-0 28.0s:57W,max:15W 2.4ms:57W
intel-rapl:0/intel-rapl:0:0: core disabled
intel-rapl:0/intel-rapl:0:1: uncore disabled
intel-rapl-mmio:0: package-0 28.0s:28W,max:15W 2.4ms:57W

[lenb: simplified format]

Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>

squish me

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 69078520

tools/power/x86/turbostat/turbostat.c

+156 −0
Original line number Diff line number Diff line
@@ -7404,6 +7404,160 @@ void print_power_limit_msr(int cpu, unsigned long long msr, char *label) 
	return;

}



static int fread_int(char *path, int *val)

{

	FILE *filep;

	int ret;



	filep = fopen (path, "r");

	if (!filep)

		return -1;



	ret = fscanf(filep, "%d", val);

	fclose(filep);

	return ret;

}



static int fread_ull(char *path, unsigned long long *val)

{

	FILE *filep;

	int ret;



	filep = fopen (path, "r");

	if (!filep)

		return -1;



	ret = fscanf(filep, "%llu", val);

	fclose(filep);

	return ret;

}



static int fread_str(char *path, char *buf, int size)

{

	FILE *filep;

	int ret;

	char *cp;



	filep = fopen (path, "r");

	if (!filep)

		return -1;



	ret = fread(buf, 1, size, filep);

	fclose(filep);



	/* replace '\n' with '\0' */

	cp = strchr(buf, '\n');

	if (cp != NULL)

		*cp = '\0';



	return ret;

}



#define PATH_RAPL_SYSFS	"/sys/class/powercap"



static int dump_one_domain(char *domain_path)

{

	char path[PATH_MAX];

	char str[PATH_MAX];

	unsigned long long val;

	int constraint;

	int enable;

	int ret;



	snprintf(path, PATH_MAX, "%s/name", domain_path);

	ret = fread_str(path, str, PATH_MAX);

	if (ret <= 0)

		return -1;



	fprintf(outf, "%s: %s", domain_path + strlen(PATH_RAPL_SYSFS) + 1, str);



	snprintf(path, PATH_MAX, "%s/enabled", domain_path);

	ret = fread_int(path, &enable);

	if (ret <= 0)

		return -1;



	if (!enable) {

		fputs(" disabled\n", outf);

		return 0;

	}



	for (constraint = 0;; constraint++)

	{

		snprintf(path, PATH_MAX, "%s/constraint_%d_time_window_us", domain_path, constraint);

		ret = fread_ull(path, &val);

		if (ret <= 0)

			break;



		if (val > 1000000)

			fprintf(outf, " %0.1fs", (double)val/1000000);

		else if (val > 1000)

			fprintf(outf, " %0.1fms", (double)val/1000);

		else

			fprintf(outf, " %0.1fus", (double)val);



		snprintf(path, PATH_MAX, "%s/constraint_%d_power_limit_uw", domain_path, constraint);

		ret = fread_ull(path, &val);

		if (ret > 0 && val)

			fprintf(outf, ":%lluW", val / 1000000);



		snprintf(path, PATH_MAX, "%s/constraint_%d_max_power_uw", domain_path, constraint);

		ret = fread_ull(path, &val);

		if (ret > 0 && val)

			fprintf(outf, ",max:%lluW", val / 1000000);

	}

	fputc('\n', outf);



	return 0;

}



static int print_rapl_sysfs(void)

{

	DIR *dir, *cdir;

	struct dirent *entry, *centry;

	char path[PATH_MAX];

	char str[PATH_MAX];



	if ((dir = opendir(PATH_RAPL_SYSFS)) == NULL) {

		warn("open %s failed", PATH_RAPL_SYSFS);

		return 1;

	}



	while ((entry = readdir (dir)) != NULL) {

		if (strlen(entry->d_name) > 100)

                        continue;



		if (strncmp(entry->d_name, "intel-rapl", strlen("intel-rapl")))

                        continue;



		snprintf(path, PATH_MAX, "%s/%s/name", PATH_RAPL_SYSFS, entry->d_name);



		/* Parse top level domains first, including package and psys */

		fread_str(path, str, PATH_MAX);

		if (strncmp(str, "package", strlen("package")) &&

		    strncmp(str, "psys", strlen("psys")))

			continue;



		snprintf(path, PATH_MAX, "%s/%s", PATH_RAPL_SYSFS, entry->d_name);

		if ((cdir = opendir(path)) == NULL) {

			perror ("opendir() error");

			return 1;

		}



		dump_one_domain(path);



		while ((centry = readdir (cdir)) != NULL) {

			if (strncmp(centry->d_name, "intel-rapl", strlen("intel-rapl")))

				continue;

			snprintf(path, PATH_MAX, "%s/%s/%s", PATH_RAPL_SYSFS, entry->d_name, centry->d_name);

			dump_one_domain(path);

		}

		closedir(cdir);

	}



	closedir(dir);

	return 0;

}



int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)

{

	unsigned long long msr;
@@ -7538,6 +7692,8 @@ void probe_rapl(void) 
	if (quiet)

		return;



	print_rapl_sysfs();



	if (!platform->rapl_msrs || no_msr)

		return;