Function cpufreq_settings_sysctl

freebsd/kern/kern_cpu.c:1031–1065

}

static int
cpufreq_settings_sysctl(SYSCTL_HANDLER_ARGS)
{
	device_t dev;
	struct cf_setting *sets;
	struct sbuf sb;
	int error, i, set_count;

	dev = oidp->oid_arg1;
	sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND);

	/* Get settings from the device and generate the output string. */
	set_count = MAX_SETTINGS;
	sets = malloc(set_count * sizeof(*sets), M_TEMP, M_NOWAIT);
	if (sets == NULL) {
		sbuf_delete(&sb);
		return (ENOMEM);
	}
	error = CPUFREQ_DRV_SETTINGS(dev, sets, &set_count);
	if (error)
		goto out;
	if (set_count) {
		for (i = 0; i < set_count; i++)
			sbuf_printf(&sb, "%d/%d ", sets[i].freq, sets[i].power);
	} else
		sbuf_cpy(&sb, "0");
	sbuf_trim(&sb);
	sbuf_finish(&sb);
	error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);

out:
	free(sets, M_TEMP);
	sbuf_delete(&sb);
	return (error);
}

static void
cpufreq_add_freq_driver_sysctl(device_t cf_dev)