1.\"- 2.\" Copyright (c) 2007 Dag-Erling Coïdan Smørgrav 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD: src/share/man/man4/coretemp.4,v 1.5 2011/05/22 14:03:30 uqs Exp $ 27.\" 28.Dd May 24, 2015 29.Dt CORETEMP 4 30.Os 31.Sh NAME 32.Nm coretemp 33.Nd device driver for Intel Core on-die digital thermal sensor 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following line in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device coretemp" 40.Ed 41.Pp 42Alternatively, to load the driver as a 43module at boot time, place the following line in 44.Xr loader.conf 5 : 45.Bd -literal -offset indent 46coretemp_load="YES" 47.Ed 48.Sh DESCRIPTION 49The 50.Nm 51driver provides support for the on-die digital thermal sensors, 52both core level and package level, 53for Intel Core and newer CPUs. 54The values are exposed through the 55.Dv HW_SENSORS 56.Xr sysctl 3 57tree. 58For example: 59.Bd -literal -offset indent 60% sysctl hw.sensors 61hw.sensors.cpu0.temp0: 50.00 degC (node0 core0 temp), OK 62hw.sensors.cpu1.temp0: 50.00 degC (node0 core0 temp), OK 63hw.sensors.cpu2.temp0: 47.00 degC (node0 core1 temp), OK 64hw.sensors.cpu3.temp0: 47.00 degC (node0 core1 temp), OK 65hw.sensors.cpu_node0.temp0: 50.00 degC (node0 temp), OK 66.Ed 67.Pp 68If the core or package temperature reaches critical level, 69a notify event will be sent using 70.Xr devctl 4 . 71.Sh SEE ALSO 72.Xr systat 1 , 73.Xr sysctl 3 , 74.Xr devctl 4 , 75.Xr devd 8 , 76.Xr sensorsd 8 , 77.Xr sysctl 8 78.Sh HISTORY 79The 80.Nm 81driver first appeared in 82.Fx 7.0 . 83.Sh AUTHORS 84.An -nosplit 85The 86.Nm 87driver was written by 88.An Rui Paulo Aq Mt rpaulo@FreeBSD.org 89as part of a Google Summer of Code project. 90This manual page was written by 91.An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org . 92