Exemplos de get_no_cpus em C++ (Cpp)

Exemplo n.º 1

Arquivo: thd_msr.cpp Projeto: Acidburn0zzz/thermal_daemon

int cthd_msr::disable_turbo() {
	int cpu_count = get_no_cpus();
	unsigned long long val;
	int ret;

	for (int i = 0; i < cpu_count; ++i) {
		/*
		 This method is recommended only for BIOS

		 ret = read_msr(i, MSR_IA32_MISC_ENABLE, &val);
		 if (ret < 0)
		 return THD_ERROR;
		 val |= MSR_IA32_MISC_ENABLE_TURBO_DISABLE;

		 ret = write_msr(i, MSR_IA32_MISC_ENABLE, val);
		 if (ret < 0)
		 return THD_ERROR;
		 */
		ret = read_msr(i, MSR_IA32_PERF_CTL, &val);
		if (ret < 0)
			return THD_ERROR;
		val |= TURBO_DISENGAGE_BIT;
		ret = write_msr(i, MSR_IA32_PERF_CTL, val);
		if (ret < 0)
			return THD_ERROR;
	}
	thd_log_info("Turbo disabled \n");

	return THD_SUCCESS;
}

Exemplo n.º 2

Arquivo: thd_msr.cpp Projeto: Acidburn0zzz/thermal_daemon

bool cthd_msr::check_turbo_status() {
	int cpu_count = get_no_cpus();
	unsigned long long val;
	int ret;

	// Return false even if one of the core is not enabled
	for (int i = 0; i < cpu_count; ++i) {
		ret = read_msr(i, MSR_IA32_MISC_ENABLE, &val);
		if (ret < 0)
			return false;

		if (val & MSR_IA32_MISC_ENABLE_TURBO_DISABLE)
			return false;
	}

	return true;
}

Exemplo n.º 3

Arquivo: thd_msr.cpp Projeto: ColinIanKing/thermal_daemon

int cthd_msr::set_clock_mod_duty_cycle(int state) {
	int cpu_count = get_no_cpus();
	unsigned long long val;
	int ret;

	thd_log_info("Set T stated %d \n", state);
	// First bit is reserved
	state = state << 1;

	for (int i = 0; i < cpu_count; ++i) {
		ret = read_msr(i, MSR_IA32_THERM_CONTROL, &val);
		if (ret < 0) {
			thd_log_debug("set_clock_mod_duty_cycle current MSR read failed\n");
			return THD_ERROR;
		}

		thd_log_debug("set_clock_mod_duty_cycle current %x\n",
				(unsigned int) val);

		if (!state) {
			val &= ~MSR_IA32_CLK_MOD_ENABLE;
		} else {
			val |= MSR_IA32_CLK_MOD_ENABLE;
		}

		val &= ~MSR_IA32_CLK_MOD_DUTY_CYCLE_MASK;
		val |= (state & MSR_IA32_CLK_MOD_DUTY_CYCLE_MASK);

		thd_log_debug("set_clock_mod_duty_cycle current set to %x\n",
				(unsigned int) val);
		ret = write_msr(i, MSR_IA32_THERM_CONTROL, val);
		if (ret < 0) {
			thd_log_warn(
					"set_clock_mod_duty_cycle current set failed to write\n");
			return THD_ERROR;
		}
	}

	return THD_SUCCESS;
}