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share/man/man4/cpufreq.4
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
.\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
.\" | .\" | ||||
.\" $FreeBSD$ | .\" $FreeBSD$ | ||||
.\" | .\" | ||||
.Dd March 3, 2006 | .Dd October 17, 2019 | ||||
.Dt CPUFREQ 4 | .Dt CPUFREQ 4 | ||||
.Os | .Os | ||||
.Sh NAME | .Sh NAME | ||||
.Nm cpufreq | .Nm cpufreq | ||||
.Nd CPU frequency control framework | .Nd CPU frequency control framework | ||||
.Sh SYNOPSIS | .Sh SYNOPSIS | ||||
.Cd "device cpufreq" | .Cd "device cpufreq" | ||||
.Pp | .Pp | ||||
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.Pa kern.timecounter.hardware | .Pa kern.timecounter.hardware | ||||
sysctl. | sysctl. | ||||
Available modes are in | Available modes are in | ||||
.Pa kern.timecounter.choice | .Pa kern.timecounter.choice | ||||
sysctl entry. | sysctl entry. | ||||
.Bl -tag -width indent | .Bl -tag -width indent | ||||
.It Va dev.cpu.%d.freq | .It Va dev.cpu.%d.freq | ||||
Current active CPU frequency in MHz. | Current active CPU frequency in MHz. | ||||
.It Va dev.cpu.%d.freq_driver | |||||
The specific | |||||
.Nm | |||||
driver used by this cpu. | |||||
.It Va dev.cpu.%d.freq_levels | .It Va dev.cpu.%d.freq_levels | ||||
Currently available levels for the CPU (frequency/power usage). | Currently available levels for the CPU (frequency/power usage). | ||||
Values are in units of MHz and milliwatts. | Values are in units of MHz and milliwatts. | ||||
.It Va dev.DEVICE.%d.freq_settings | .It Va dev.DEVICE.%d.freq_settings | ||||
Currently available settings for the driver (frequency/power usage). | Currently available settings for the driver (frequency/power usage). | ||||
Values are in units of MHz and milliwatts. | Values are in units of MHz and milliwatts. | ||||
This is helpful for understanding which settings are offered by which | This is helpful for understanding which settings are offered by which | ||||
driver for debugging purposes. | driver for debugging purposes. | ||||
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