C++ (Cpp) msr_intel_set_perf_biasの例

コード例 #1

ファイル: cpupower-set.c プロジェクト: 19Dan01/linux

int cmd_set(int argc, char **argv)
{
	extern char *optarg;
	extern int optind, opterr, optopt;
	unsigned int cpu;

	union {
		struct {
			int perf_bias:1;
		};
		int params;
	} params;
	int perf_bias = 0;
	int ret = 0;

	setlocale(LC_ALL, "");
	textdomain(PACKAGE);

	params.params = 0;
	/* parameter parsing */
	while ((ret = getopt_long(argc, argv, "b:",
						set_opts, NULL)) != -1) {
		switch (ret) {
		case 'b':
			if (params.perf_bias)
				print_wrong_arg_exit();
			perf_bias = atoi(optarg);
			if (perf_bias < 0 || perf_bias > 15) {
				printf(_("--perf-bias param out "
					 "of range [0-%d]\n"), 15);
				print_wrong_arg_exit();
			}
			params.perf_bias = 1;
			break;
		default:
			print_wrong_arg_exit();
		}
	};

	if (!params.params)
		print_wrong_arg_exit();

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

	/* 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;

		if (params.perf_bias) {
			ret = msr_intel_set_perf_bias(cpu, perf_bias);
			if (ret) {
				fprintf(stderr, _("Error setting perf-bias "
						  "value on CPU %d\n"), cpu);
				break;
			}
		}
	}
	return ret;
}

コード例 #2

ファイル: cpupower-set.c プロジェクト: MiniBlu/cm11_kernel_htc_msm8974a3ul

int cmd_set(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 sched_mc = 0, sched_smt = 0, perf_bias = 0;
	int ret = 0;

	setlocale(LC_ALL, "");
	textdomain(PACKAGE);

	params.params = 0;
	
	while ((ret = getopt_long(argc, argv, "m:s:b:",
						set_opts, NULL)) != -1) {
		switch (ret) {
		case 'b':
			if (params.perf_bias)
				print_wrong_arg_exit();
			perf_bias = atoi(optarg);
			if (perf_bias < 0 || perf_bias > 15) {
				printf(_("--perf-bias param out "
					 "of range [0-%d]\n"), 15);
				print_wrong_arg_exit();
			}
			params.perf_bias = 1;
			break;
		case 'm':
			if (params.sched_mc)
				print_wrong_arg_exit();
			sched_mc = atoi(optarg);
			if (sched_mc < 0 || sched_mc > 2) {
				printf(_("--sched-mc param out "
					 "of range [0-%d]\n"), 2);
				print_wrong_arg_exit();
			}
			params.sched_mc = 1;
			break;
		case 's':
			if (params.sched_smt)
				print_wrong_arg_exit();
			sched_smt = atoi(optarg);
			if (sched_smt < 0 || sched_smt > 2) {
				printf(_("--sched-smt param out "
					 "of range [0-%d]\n"), 2);
				print_wrong_arg_exit();
			}
			params.sched_smt = 1;
			break;
		default:
			print_wrong_arg_exit();
		}
	};

	if (!params.params)
		print_wrong_arg_exit();

	if (params.sched_mc) {
		ret = sysfs_set_sched("mc", sched_mc);
		if (ret)
			fprintf(stderr, _("Error setting sched-mc %s\n"),
				(ret == -ENODEV) ? "not supported" : "");
	}
	if (params.sched_smt) {
		ret = sysfs_set_sched("smt", sched_smt);
		if (ret)
			fprintf(stderr, _("Error setting sched-smt %s\n"),
				(ret == -ENODEV) ? "not supported" : "");
	}

	
	if (bitmask_isallclear(cpus_chosen))
		bitmask_setall(cpus_chosen);

	
	for (cpu = bitmask_first(cpus_chosen);
	     cpu <= bitmask_last(cpus_chosen); cpu++) {

		if (!bitmask_isbitset(cpus_chosen, cpu) ||
		    cpufreq_cpu_exists(cpu))
			continue;

		if (params.perf_bias) {
			ret = msr_intel_set_perf_bias(cpu, perf_bias);
			if (ret) {
				fprintf(stderr, _("Error setting perf-bias "
						  "value on CPU %d\n"), cpu);
				break;
			}
		}
	}
	return ret;
}