€•ê,Œsphinx.addnodes”Œdocument”“”)”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)”}”(hhh]”(hŒ pending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ*/translations/zh_CN/hwmon/acpi_power_meter”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ*/translations/zh_TW/hwmon/acpi_power_meter”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ*/translations/it_IT/hwmon/acpi_power_meter”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ*/translations/ja_JP/hwmon/acpi_power_meter”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ*/translations/ko_KR/hwmon/acpi_power_meter”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ*/translations/sp_SP/hwmon/acpi_power_meter”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒKernel driver power_meter”h]”hŒKernel driver power_meter”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒD/var/lib/git/docbuild/linux/Documentation/hwmon/acpi_power_meter.rst”h KubhŒ paragraph”“”)”}”(hŒ+This driver talks to ACPI 4.0 power meters.”h]”hŒ+This driver talks to ACPI 4.0 power meters.”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¸)”}”(hŒSupported systems:”h]”hŒSupported systems:”…””}”(hhÇhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubhŒ block_quote”“”)”}”(hŒy* Any recent system with ACPI 4.0. Prefix: 'power_meter' Datasheet: https://uefi.org/specifications, section 10.4. ”h]”hŒ bullet_list”“”)”}”(hhh]”hŒ list_item”“”)”}”(hŒsAny recent system with ACPI 4.0. Prefix: 'power_meter' Datasheet: https://uefi.org/specifications, section 10.4. ”h]”(h¸)”}”(hŒ Any recent system with ACPI 4.0.”h]”hŒ Any recent system with ACPI 4.0.”…””}”(hhæhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khhâubh¸)”}”(hŒPrefix: 'power_meter'”h]”hŒPrefix: ‘power_meter’”…””}”(hhôhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hhâubh¸)”}”(hŒ9Datasheet: https://uefi.org/specifications, section 10.4.”h]”(hŒ Datasheet: ”…””}”(hjhžhhŸNh NubhŒ reference”“”)”}”(hŒhttps://uefi.org/specifications”h]”hŒhttps://uefi.org/specifications”…””}”(hj hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”juh1j hjubhŒ, section 10.4.”…””}”(hjhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hhâubeh}”(h]”h ]”h"]”h$]”h&]”uh1hàhhÝubah}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ*”uh1hÛhŸh¶h Khh×ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhŸh¶h Khh£hžhubh¸)”}”(hŒAuthor: Darrick J. Wong”h]”hŒAuthor: Darrick J. Wong”…””}”(hj9hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¢)”}”(hhh]”(h§)”}”(hŒ Description”h]”hŒ Description”…””}”(hjJhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hjGhžhhŸh¶h Kubh¸)”}”(hX¥This driver implements sensor reading support for the power meters exposed in the ACPI 4.0 spec (Chapter 10.4). These devices have a simple set of features--a power meter that returns average power use over a configurable interval, an optional capping mechanism, and a couple of trip points. The sysfs interface conforms with the specification outlined in the "Power" section of Documentation/hwmon/sysfs-interface.rst.”h]”hX©This driver implements sensor reading support for the power meters exposed in the ACPI 4.0 spec (Chapter 10.4). These devices have a simple set of features--a power meter that returns average power use over a configurable interval, an optional capping mechanism, and a couple of trip points. The sysfs interface conforms with the specification outlined in the “Power†section of Documentation/hwmon/sysfs-interface.rst.”…””}”(hjXhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhjGhžhubeh}”(h]”Œ description”ah ]”h"]”Œ description”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubh¢)”}”(hhh]”(h§)”}”(hŒSpecial Features”h]”hŒSpecial Features”…””}”(hjqhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hjnhžhhŸh¶h Kubh¸)”}”(hXMThe `power[1-*]_is_battery` knob indicates if the power supply is a battery. Both `power[1-*]_average_{min,max}` must be set before the trip points will work. When both of them are set, an ACPI event will be broadcast on the ACPI netlink socket and a poll notification will be sent to the appropriate `power[1-*]_average` sysfs file.”h]”(hŒThe ”…””}”(hjhžhhŸNh NubhŒtitle_reference”“”)”}”(hŒ`power[1-*]_is_battery`”h]”hŒpower[1-*]_is_battery”…””}”(hj‰hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjubhŒ7 knob indicates if the power supply is a battery. Both ”…””}”(hjhžhhŸNh Nubjˆ)”}”(hŒ`power[1-*]_average_{min,max}`”h]”hŒpower[1-*]_average_{min,max}”…””}”(hj›hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjubhŒ½ must be set before the trip points will work. When both of them are set, an ACPI event will be broadcast on the ACPI netlink socket and a poll notification will be sent to the appropriate ”…””}”(hjhžhhŸNh Nubjˆ)”}”(hŒ`power[1-*]_average`”h]”hŒpower[1-*]_average”…””}”(hj­hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjubhŒ sysfs file.”…””}”(hjhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khjnhžhubh¸)”}”(hŒÐThe `power[1-*]_{model_number, serial_number, oem_info}` fields display arbitrary strings that ACPI provides with the meter. The measures/ directory contains symlinks to the devices that this meter measures.”h]”(hŒThe ”…””}”(hjÅhžhhŸNh Nubjˆ)”}”(hŒ4`power[1-*]_{model_number, serial_number, oem_info}`”h]”hŒ2power[1-*]_{model_number, serial_number, oem_info}”…””}”(hjÍhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjÅubhŒ˜ fields display arbitrary strings that ACPI provides with the meter. The measures/ directory contains symlinks to the devices that this meter measures.”…””}”(hjÅhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K#hjnhžhubh¸)”}”(hXíSome computers have the ability to enforce a power cap in hardware. If this is the case, the `power[1-*]_cap` and related sysfs files will appear. When the average power consumption exceeds the cap, an ACPI event will be broadcast on the netlink event socket and a poll notification will be sent to the appropriate `power[1-*]_alarm` file to indicate that capping has begun, and the hardware has taken action to reduce power consumption. Most likely this will result in reduced performance.”h]”(hŒ^Some computers have the ability to enforce a power cap in hardware. If this is the case, the ”…””}”(hjåhžhhŸNh Nubjˆ)”}”(hŒ`power[1-*]_cap`”h]”hŒpower[1-*]_cap”…””}”(hjíhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjåubhŒÏ and related sysfs files will appear. When the average power consumption exceeds the cap, an ACPI event will be broadcast on the netlink event socket and a poll notification will be sent to the appropriate ”…””}”(hjåhžhhŸNh Nubjˆ)”}”(hŒ`power[1-*]_alarm`”h]”hŒpower[1-*]_alarm”…””}”(hjÿhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjåubhŒž file to indicate that capping has begun, and the hardware has taken action to reduce power consumption. Most likely this will result in reduced performance.”…””}”(hjåhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K'hjnhžhubh¸)”}”(hŒîThere are a few other ACPI notifications that can be sent by the firmware. In all cases the ACPI event will be broadcast on the ACPI netlink event socket as well as sent as a poll notification to a sysfs file. The events are as follows:”h]”hŒîThere are a few other ACPI notifications that can be sent by the firmware. In all cases the ACPI event will be broadcast on the ACPI netlink event socket as well as sent as a poll notification to a sysfs file. The events are as follows:”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K/hjnhžhubh¸)”}”(hŒŸ`power[1-*]_cap` will be notified if the firmware changes the power cap. `power[1-*]_interval` will be notified if the firmware changes the averaging interval.”h]”(jˆ)”}”(hŒ`power[1-*]_cap`”h]”hŒpower[1-*]_cap”…””}”(hj)hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hj%ubhŒ9 will be notified if the firmware changes the power cap. ”…””}”(hj%hžhhŸNh Nubjˆ)”}”(hŒ`power[1-*]_interval`”h]”hŒpower[1-*]_interval”…””}”(hj;hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hj%ubhŒA will be notified if the firmware changes the averaging interval.”…””}”(hj%hžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K4hjnhžhubeh}”(h]”Œspecial-features”ah ]”h"]”Œspecial features”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubeh}”(h]”Œkernel-driver-power-meter”ah ]”h"]”Œkernel driver power_meter”ah$]”h&]”uh1h¡hhhžhhŸh¶h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h¶uh1hŒcurrent_source”NŒ current_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¦NŒ generator”NŒ datestamp”NŒ source_link”NŒ source_url”NŒ toc_backlinks”Œentry”Œfootnote_backlinks”KŒ sectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒ strip_classes”NŒ report_level”KŒ halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ traceback”ˆŒinput_encoding”Œ utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”j†Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œ language_code”Œen”Œrecord_dependencies”NŒconfig”NŒ id_prefix”hŒauto_id_prefix”Œid”Œ dump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h¶Œ _destination”NŒ _config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒ raw_enabled”KŒline_length_limit”M'Œpep_references”NŒ pep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒ rfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œ smart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œ docinfo_xform”KŒsectsubtitle_xform”‰Œ image_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(j`j]jkjhjXjUuŒ nametypes”}”(j`‰jk‰jX‰uh}”(j]h£jhjGjUjnuŒ footnote_refs”}”Œ citation_refs”}”Œ autofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ footnotes”]”Œ citations”]”Œautofootnote_start”KŒsymbol_footnote_start”KŒ id_counter”Œ collections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œ transformer”NŒ include_log”]”Œ decoration”Nhžhub.