907b6777c1
modern dual-core systems as well. - Parse the _CST packages for each cpu and track all the states individually, on a per-cpu basis. - Revert to generic FADT/P_BLK based Cx control if the _CST package is not present on all cpus. In that case, the new driver will still support per-cpu Cx state handling. The driver will determine the highest Cx level that can be supported by all the cpus and configure the available Cx state based on that. - Fixed the case where multiple cpus in the system share the same registers for Cx state handling. To do that, added a new flag parameter to the acpi_PkgGas and acpi_bus_alloc_gas functions that enable the caller to add the RF_SHAREABLE flag. This flag could also be useful to other callers (acpi_throttle?) in the tree but this change is not yet made. - For Core Duo cpus, both cores seems to be taken out of C3 state when any one of the cores need to transition out. This broke the short sleep detection logic. It is disabled now if there is more than one cpu in the system for now as it fixed it in my case. This quirk may need to be re-enabled later differently. - Added support to control cx_lowest on a per-cpu basis. There is still a generic cx_lowest to enable changing cx_lowest for all cpus with a single sysctl and for ease of use. Sample output for the new sysctl: dev.cpu.0.cx_supported: C1/1 C2/1 C3/57 dev.cpu.0.cx_lowest: C3 dev.cpu.0.cx_usage: 0.00% 43.16% 56.83% dev.cpu.1.cx_supported: C1/1 C2/1 C3/57 dev.cpu.1.cx_lowest: C3 dev.cpu.1.cx_usage: 0.00% 45.65% 54.34% hw.acpi.cpu.cx_lowest: C3 This work was done by Stephane E. Potvin with some simple reworking by myself. Thank you. Submitted by: Stephane E. Potvin <sepotvin / videotron.ca> MFC after: 2 weeks
93 lines
2.0 KiB
Bash
93 lines
2.0 KiB
Bash
#!/bin/sh
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#
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# Modify the power profile based on AC line state. This script is
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# usually called from devd(8).
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#
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# Arguments: 0x00 (AC offline, economy) or 0x01 (AC online, performance)
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#
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# $FreeBSD$
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#
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# PROVIDE: power_profile
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# REQUIRE: mountcritlocal syslogd
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# KEYWORD: nojail nostart
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. /etc/rc.subr
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name="power_profile"
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LOGGER="logger -t power_profile -p daemon.notice"
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# Set a given sysctl node to a value.
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#
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# Variables:
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# $node: sysctl node to set with the new value
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# $value: HIGH for the highest performance value, LOW for the best
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# economy value, or the value itself.
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# $highest_value: maximum value for this sysctl, when $value is "HIGH"
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# $lowest_value: minimum value for this sysctl, when $value is "LOW"
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#
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sysctl_set ()
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{
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# Check if the node exists
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if [ -z "$(sysctl -n ${node} 2> /dev/null)" ]; then
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return
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fi
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# Get the new value, checking for special types HIGH or LOW
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case ${value} in
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[Hh][Ii][Gg][Hh])
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value=${highest_value}
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;;
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[Ll][Oo][Ww])
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value=${lowest_value}
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;;
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[Nn][Oo][Nn][Ee])
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return
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;;
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*)
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;;
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esac
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# Set the desired value
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[ -n "${value}" ] && sysctl ${node}=${value}
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}
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if [ $# -ne 1 ]; then
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err 1 "Usage: $0 [0x00|0x01]"
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fi
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load_rc_config $name
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# Find the next state (performance or economy).
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state=$1
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case ${state} in
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0x01 | '')
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${LOGGER} "changed to 'performance'"
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profile="performance"
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;;
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0x00)
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${LOGGER} "changed to 'economy'"
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profile="economy"
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;;
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*)
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echo "Usage: $0 [0x00|0x01]"
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exit 1
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esac
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# Set the various sysctls based on the profile's values.
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node="hw.acpi.cpu.cx_lowest"
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highest_value="C1"
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lowest_value="`(sysctl -n dev.cpu.0.cx_supported | \
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awk '{ print "C" split($0, a) }' -) 2> /dev/null`"
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eval value=\$${profile}_cx_lowest
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sysctl_set
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node="dev.cpu.0.freq"
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highest_value="`(sysctl -n dev.cpu.0.freq_levels | \
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awk '{ split($0, a, "[/ ]"); print a[1] }' -) 2> /dev/null`"
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lowest_value="`(sysctl -n dev.cpu.0.freq_levels | \
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awk '{ split($0, a, "[/ ]"); print a[length(a) - 1] }' -) 2> /dev/null`"
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eval value=\$${profile}_cpu_freq
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sysctl_set
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exit 0
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