{"id":53000,"date":"2019-11-21T00:00:00","date_gmt":"2019-11-20T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/google-rabotaet-nad-ispolzovaniem-obychnogo-yadra-linux-v-android"},"modified":"2020-02-18T14:00:50","modified_gmt":"2020-02-18T11:00:50","slug":"google-rabotaet-nad-ispolzovaniem-obychnogo-yadra-linux-v-android","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/google-rabotaet-nad-ispolzovaniem-obychnogo-yadra-linux-v-android","title":{"rendered":"Google dela na uporabi obi\u010dajnega jedra Linux v Androidu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Na preteklem konferenci Linux Plumbers 2019 je podjetje Google <noindex><a rel=\"nofollow\" href=\"https:\/\/arstechnica.com\/gadgets\/2019\/11\/google-outlines-plans-for-mainline-linux-kernel-support-in-android\/\">povedal<\/a><\/noindex>  razvijalo <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=49648\">inicijativi<\/a><\/noindex> prenos sprememb v osnovno jedro Linuxa, ki jih razvijajo <noindex><a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/kernel\/common\/+refs\">v razli\u010dici jedra<\/a><\/noindex> za platformo Android. Kon\u010dni cilj je omogo\u010diti uporabo enotnega skupnega jedra v Androidu, namesto da bi za vsako napravo pripravljali lo\u010dene razli\u010dice na podlagi specifi\u010dne Android veje <noindex><a rel=\"nofollow\" href=\"https:\/\/source.android.com\/devices\/architecture\/kernel\/android-common\">Android Common Kernel<\/a><\/noindex>. Ta cilj je \u017ee delno dose\u017een, na konferenci je bil prikazan Android pametni telefon Xiaomi Poco F1 s programsko opremo, ki temelji na obi\u010dajnem neokro\u017eenem jedru Linuxa.<\/p>\n<p>Ko bo projekt pripravljen, bodo dobavitelji povabljeni, da dobavijo osnovno jedro, ki temelji na osnovnem jedru Linuxa. Komponente za podporo strojni opremi bodo dostavljene dobaviteljev le v obliki dodatnih jedrskih modulov, brez vdelave popravkov v jedro. V modulih mora biti zagotovljena zdru\u017eljivost z osnovnim jedrom na ravni prostora imen simbolov jedra. Vse spremembe, ki se dotikajo osnovnega jedra, bodo napredovale v upstream. Za ohranjanje zdru\u017eljivosti s proprietarnimi moduli v okviru LTS vej je predlagano ohranjanje API in ABI jedra v stabilnem stanju, kar omogo\u010da ohranjanje zdru\u017eljivosti modulov z nadgradnjami za vsako skupno vejo jedra.<\/p>\n<p><center><img decoding=\"async\" alt=\"Google dela na uporabi obi\u010dajnega jedra Linux v Androidu\" src=\"\/wp-content\/uploads\/2019\/11\/18f8a41befddc7d81c07b9c6d1bf44c2.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>V preteklem letu so bile v osnovno jedro Linuxa prenesene funkcionalnosti iz razli\u010dice jedra za Android, kot so podsystem PSI (Pressure Stall Information) za analizo informacij o \u010dasu \u010dakanja na pridobitev razli\u010dnih virov (CPU, pomnilnik, vhod\/izhod), pseudo-datote\u010dni sistem BinderFS za mehanizem medprocesnega komuniciranja Binder in energetsko u\u010dinkoviti na\u010drtovalnik opravil EAS (Energy Aware Scheduling). V prihodnje se na\u010drtuje prenos Androida s specifi\u010dnega na\u010drtovalnika SchedTune na novo podno\u017eje UtilClamp, razvito v ARM, ki temelji na cgroups2 in privzetih mehanizmih jedra.<\/p>\n<p><center><img decoding=\"async\" alt=\"Google dela na uporabi obi\u010dajnega jedra Linux v Androidu\" src=\"\/wp-content\/uploads\/2019\/11\/2db4ca76f6a87b2ad28a7510a4deb79c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>Spomnimo se, da je jedro za platformo Android doslej pre\u0161lo ve\u010d stopenj priprave:<\/p>\n<ul>\n<li class=\"l\"> Na osnovi glavnih LTS jedrih (3.18, 4.4, 4.9 in 4.14) je bilo ustvarjeno veje &#171;Android Common Kernel&#187;, v katerega so bili preneseni specifi\u010dni za Android popravki (prej je obseg sprememb dosegel ve\u010d milijonov vrstic, a so se v zadnjem \u010dasu spremembe zmanj\u0161ale na nekaj tiso\u010d vrstic kode).\n<li class=\"l\"> Na osnovi &#171;Android Common Kernel&#187; so proizvajalci \u010dipov, kot je Qualcomm, oblikovali &#171;SoC Kernel&#187;, ki vklju\u010dujejo dodatke za podporo strojni opremi.\n<li class=\"l\"> Na osnovi &#171;SoC Kernel&#187; so proizvajalci naprav ustvarili &#171;Device Kernel&#187;, ki vklju\u010dujejo spremembe, povezane s podporo dodatni strojni opremi, zaslonom, kamerami, zvo\u010dnimi sistemi itd.\n<\/ul>\n<p><center><img decoding=\"async\" alt=\"Google dela na uporabi obi\u010dajnega jedra Linux v Androidu\" src=\"\/wp-content\/uploads\/2019\/11\/3a7d495f71eaef927e79912ca62776d8.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>V bistvu je za vsako napravo nastalo lastno jedro, ki ga ni bilo mogo\u010de uporabiti na drugih napravah. Ta shema bistveno ote\u017euje prenos posodobitev za odpravo ranljivosti in prehod na nove veje jedra. Na primer, najnovej\u0161i pametni telefon Pixel 4, ki je iz\u0161el oktobra, prihaja z jedrom Linux 4.14, ki je bilo izdano pred dvema letoma. Delno je Google posku\u0161al poenostaviti podporo s spodbujanjem sistema <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48588\">Treble<\/a><\/noindex>, ki omogo\u010da proizvajalcem ustvarjanje univerzalnih komponent podpore strojni opremi, ki niso vezane na specifi\u010dne razli\u010dice Androida in uporabljene izdaje jedra Linux. Treble omogo\u010da uporabo \u017ee pripravljenih posodobitev od Googla kot osnove ter njihovo integracijo s komponentami specifi\u010dnimi za dolo\u010deno napravo. <\/p>\n<p><center><br \/>\n<div class=\"youtube-placeholder\" data-id=\"f2C-gA8jEyY\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/f2C-gA8jEyY\/hqdefault.jpg\" alt=\"Predvajaj video\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51905\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430 \u043f\u0440\u043e\u0448\u0435\u0434\u0448\u0435\u0439 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 Linux Plumbers 2019 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u043b\u0430 \u043e \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0438 \u0438\u043d\u0438\u0446\u0438\u0430\u0442\u0438\u0432\u044b \u043f\u043e \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0443 \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0435 \u044f\u0434\u0440\u043e Linux \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0435 \u044f\u0434\u0440\u0430 \u0434\u043b\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Android. \u041a\u043e\u043d\u0435\u0447\u043d\u043e\u0439 \u0446\u0435\u043b\u044c\u044e \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432 Android \u043e\u0434\u043d\u043e\u0433\u043e \u043e\u0431\u0449\u0435\u0433\u043e \u044f\u0434\u0440\u0430, \u0432\u043c\u0435\u0441\u0442\u043e \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0438 \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u0441\u0431\u043e\u0440\u043e\u043a \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u043e\u0439 \u0434\u043b\u044f Android \u0432\u0435\u0442\u043a\u0438 Android Common Kernel. \u0414\u0430\u043d\u043d\u0430\u044f \u0446\u0435\u043b\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-53000","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041d\u0430 \u043f\u0440\u043e\u0448\u0435\u0434\u0448\u0435\u0439 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 Linux Plumbers 2019 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sl\/blog\/news\/google-rabotaet-nad-ispolzovaniem-obychnogo-yadra-linux-v-android\" \/>\n\t\t<meta 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