€•~&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”Œ2/translations/zh_CN/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ2/translations/zh_TW/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ2/translations/it_IT/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ2/translations/ja_JP/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ2/translations/ko_KR/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ2/translations/pt_BR/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ2/translations/sp_SP/trace/coresight/coresight-trbe”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh·sbah}”(h]”h ]”h"]”h$]”h&]”Œ xml:space”Œpreserve”uh1hµhhh²hh³ŒL/var/lib/git/docbuild/linux/Documentation/trace/coresight/coresight-trbe.rst”h´KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒTrace Buffer Extension (TRBE).”h]”hŒTrace Buffer Extension (TRBE).”…””}”(hhÏh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhhÊh²hh³hÇh´KubhŒ block_quote”“”)”}”(hŒR:Author: Anshuman Khandual :Date: November 2020 ”h]”hŒ field_list”“”)”}”(hhh]”(hŒfield”“”)”}”(hhh]”(hŒ field_name”“”)”}”(hŒAuthor”h]”hŒAuthor”…””}”(hhïh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1híhhêh³hÇh´KubhŒ field_body”“”)”}”(hŒ-Anshuman Khandual ”h]”hŒ paragraph”“”)”}”(hjh]”(hŒAnshuman Khandual <”…””}”(hjh²hh³Nh´NubhŒ reference”“”)”}”(hŒanshuman.khandual@arm.com”h]”hŒanshuman.khandual@arm.com”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”Œ mailto:anshuman.khandual@arm.com”uh1j hjubhŒ>”…””}”(hjh²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´Khhÿubah}”(h]”h ]”h"]”h$]”h&]”uh1hýhhêubeh}”(h]”h ]”h"]”h$]”h&]”uh1hèh³hÇh´Khhåubhé)”}”(hhh]”(hî)”}”(hŒDate”h]”hŒDate”…””}”(hj7h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1híhj4h³hÇh´Kubhþ)”}”(hŒNovember 2020 ”h]”j)”}”(hŒ November 2020”h]”hŒ November 2020”…””}”(hjIh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´KhjEubah}”(h]”h ]”h"]”h$]”h&]”uh1hýhj4ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hèh³hÇh´Khhåubeh}”(h]”h ]”h"]”h$]”h&]”uh1hãhhßubah}”(h]”h ]”h"]”h$]”h&]”uh1hÝh³hÇh´KhhÊh²hubhÉ)”}”(hhh]”(hÎ)”}”(hŒHardware Description”h]”hŒHardware Description”…””}”(hjrh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhjoh²hh³hÇh´K ubj)”}”(hXTrace Buffer Extension (TRBE) is a percpu hardware which captures in system memory, CPU traces generated from a corresponding percpu tracing unit. This gets plugged in as a coresight sink device because the corresponding trace generators (ETE), are plugged in as source device.”h]”hXTrace Buffer Extension (TRBE) is a percpu hardware which captures in system memory, CPU traces generated from a corresponding percpu tracing unit. This gets plugged in as a coresight sink device because the corresponding trace generators (ETE), are plugged in as source device.”…””}”(hj€h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´K hjoh²hubj)”}”(hŒ³The TRBE is not compliant to CoreSight architecture specifications, but is driven via the CoreSight driver framework to support the ETE (which is CoreSight compliant) integration.”h]”hŒ³The TRBE is not compliant to CoreSight architecture specifications, but is driven via the CoreSight driver framework to support the ETE (which is CoreSight compliant) integration.”…””}”(hjŽh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´Khjoh²hubeh}”(h]”Œhardware-description”ah ]”h"]”Œhardware description”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´K ubhÉ)”}”(hhh]”(hÎ)”}”(hŒSysfs files and directories”h]”hŒSysfs files and directories”…””}”(hj§h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhj¤h²hh³hÇh´Kubj)”}”(hŒ]The TRBE devices appear on the existing coresight bus alongside the other coresight devices::”h]”hŒ\The TRBE devices appear on the existing coresight bus alongside the other coresight devices:”…””}”(hjµh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´Khj¤h²hubhŒ literal_block”“”)”}”(hŒ:>$ ls /sys/bus/coresight/devices trbe0 trbe1 trbe2 trbe3”h]”hŒ:>$ ls /sys/bus/coresight/devices trbe0 trbe1 trbe2 trbe3”…””}”hjÅsbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1jÃh³hÇh´Khj¤h²hubj)”}”(hŒ8The ``trbe`` named TRBEs are associated with a CPU.::”h]”(hŒThe ”…””}”(hjÓh²hh³Nh´NubhŒliteral”“”)”}”(hŒ ``trbe``”h]”hŒtrbe”…””}”(hjÝh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jÛhjÓubhŒ( named TRBEs are associated with a CPU.:”…””}”(hjÓh²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´Khj¤h²hubjÄ)”}”(hŒ2>$ ls /sys/bus/coresight/devices/trbe0/ align flag”h]”hŒ2>$ ls /sys/bus/coresight/devices/trbe0/ align flag”…””}”hjõsbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1jÃh³hÇh´K!hj¤h²hubhŒdefinition_list”“”)”}”(hhh]”hŒdefinition_list_item”“”)”}”(hŒ|*Key file items are:-* * ``align``: TRBE write pointer alignment * ``flag``: TRBE updates memory with access and dirty flags”h]”(hŒterm”“”)”}”(hŒ*Key file items are:-*”h]”hŒemphasis”“”)”}”(hjh]”hŒKey file items are:-”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jhjubah}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´K%hj ubhŒ definition”“”)”}”(hhh]”hŒ bullet_list”“”)”}”(hhh]”(hŒ list_item”“”)”}”(hŒ'``align``: TRBE write pointer alignment”h]”j)”}”(hj7h]”(jÜ)”}”(hŒ ``align``”h]”hŒalign”…””}”(hj<h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jÛhj9ubhŒ: TRBE write pointer alignment”…””}”(hj9h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´K%hj5ubah}”(h]”h ]”h"]”h$]”h&]”uh1j3hj0ubj4)”}”(hŒ9``flag``: TRBE updates memory with access and dirty flags”h]”j)”}”(hj\h]”(jÜ)”}”(hŒ``flag``”h]”hŒflag”…””}”(hjah²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jÛhj^ubhŒ1: TRBE updates memory with access and dirty flags”…””}”(hj^h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´K&hjZubah}”(h]”h ]”h"]”h$]”h&]”uh1j3hj0ubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ*”uh1j.h³hÇh´K%hj+ubah}”(h]”h ]”h"]”h$]”h&]”uh1j)hj ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jh³hÇh´K%hjubah}”(h]”h ]”h"]”h$]”h&]”uh1jhj¤h²hh³Nh´Nubeh}”(h]”Œsysfs-files-and-directories”ah ]”h"]”Œsysfs files and directories”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´Kubeh}”(h]”Œtrace-buffer-extension-trbe”ah ]”h"]”Œtrace buffer extension (trbe).”ah$]”h&]”uh1hÈhhh²hh³hÇh´Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”hÇuh1hŒcurrent_source”NŒ current_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(hÍNŒ 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”jÌŒerror_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”hÇŒ _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£j¡jžjžj›uŒ nametypes”}”(j¦‰j¡‰jž‰uh}”(j£hÊjžjoj›j¤uŒ 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”Nh²hub.