1 files changed, 135 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/cpupower-info.c b/tools/power/cpupower/utils/cpupower-info.c
new file mode 100644
index 000000000000..3f68632c28c7
--- /dev/null
+++ b/tools/power/cpupower/utils/cpupower-info.c
@@ -0,0 +1,135 @@
+/*
+ *  (C) 2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
+ *
+ *  Licensed under the terms of the GNU GPL License version 2.
+ */
+
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <getopt.h>
+
+#include <cpufreq.h>
+#include "helpers/helpers.h"
+#include "helpers/sysfs.h"
+
+static struct option set_opts[] = {
+	{ .name = "perf-bias",	.has_arg = optional_argument,	.flag = NULL,	.val = 'b'},
+	{ .name = "sched-mc",	.has_arg = optional_argument,	.flag = NULL,	.val = 'm'},
+	{ .name = "sched-smt",	.has_arg = optional_argument,	.flag = NULL,	.val = 's'},
+	{ },
+};
+
+static void print_wrong_arg_exit(void)
+{
+	printf(_("invalid or unknown argument\n"));
+	exit(EXIT_FAILURE);
+}
+
+int cmd_info(int argc, char **argv)
+{
+	extern char *optarg;
+	extern int optind, opterr, optopt;
+	unsigned int cpu;
+
+	union {
+		struct {
+			int sched_mc:1;
+			int sched_smt:1;
+			int perf_bias:1;
+		};
+		int params;
+	} params = {};
+	int ret = 0;
+
+	setlocale(LC_ALL, "");
+	textdomain(PACKAGE);
+
+	/* parameter parsing */
+	while ((ret = getopt_long(argc, argv, "msb", set_opts, NULL)) != -1) {
+		switch (ret) {
+		case 'b':
+			if (params.perf_bias)
+				print_wrong_arg_exit();
+			params.perf_bias = 1;
+			break;
+		case 'm':
+			if (params.sched_mc)
+				print_wrong_arg_exit();
+			params.sched_mc = 1;
+			break;
+		case 's':
+			if (params.sched_smt)
+				print_wrong_arg_exit();
+			params.sched_smt = 1;
+			break;
+		default:
+			print_wrong_arg_exit();
+		}
+	};
+
+	if (!params.params)
+		params.params = 0x7;
+
+	/* Default is: show output of CPU 0 only */
+	if (bitmask_isallclear(cpus_chosen))
+		bitmask_setbit(cpus_chosen, 0);
+
+	if (params.sched_mc) {
+		ret = sysfs_get_sched("mc");
+		printf(_("System's multi core scheduler setting: "));
+		if (ret < 0)
+			/* if sysfs file is missing it's: errno == ENOENT */
+			printf(_("not supported\n"));
+		else
+			printf("%d\n", ret);
+	}
+	if (params.sched_smt) {
+		ret = sysfs_get_sched("smt");
+		printf(_("System's thread sibling scheduler setting: "));
+		if (ret < 0)
+			/* if sysfs file is missing it's: errno == ENOENT */
+			printf(_("not supported\n"));
+		else
+			printf("%d\n", ret);
+	}
+
+	/* Add more per cpu options here */
+	if (!params.perf_bias)
+		return ret;
+
+	if (params.perf_bias) {
+		if (!run_as_root) {
+			params.perf_bias = 0;
+			printf(_("Intel's performance bias setting needs root privileges\n"));
+		} else if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) {
+			printf(_("System does not support Intel's performance"
+				 " bias setting\n"));
+			params.perf_bias = 0;
+		}
+	}
+
+	/* loop over CPUs */
+	for (cpu = bitmask_first(cpus_chosen);
+	     cpu <= bitmask_last(cpus_chosen); cpu++) {
+
+		if (!bitmask_isbitset(cpus_chosen, cpu) ||
+		    cpufreq_cpu_exists(cpu))
+			continue;
+
+		printf(_("analyzing CPU %d:\n"), cpu);
+
+		if (params.perf_bias) {
+			ret = msr_intel_get_perf_bias(cpu);
+			if (ret < 0) {
+				printf(_("Could not read perf-bias value\n"));
+				break;
+			} else
+				printf(_("perf-bias: %d\n"), ret);
+		}
+	}
+	return ret;
+}