{"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\/it\/blog\/novosti-interneta\/google-rabotaet-nad-ispolzovaniem-obychnogo-yadra-linux-v-android","title":{"rendered":"Google sta lavorando per utilizzare il kernel Linux standard su Android.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Durante la conferenza Linux Plumbers 2019, Google <noindex><a rel=\"nofollow\" href=\"https:\/\/arstechnica.com\/gadgets\/2019\/11\/google-outlines-plans-for-mainline-linux-kernel-support-in-android\/\">ha raccontato<\/a><\/noindex>  ha parlato dello sviluppo <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=49648\">dell'iniziativa<\/a><\/noindex> del trasferimento nel kernel principale di Linux delle modifiche sviluppate nella <noindex><a rel=\"nofollow\" href=\"https:\/\/android.googlesource.com\/kernel\/common\/+refs\">versione del kernel<\/a><\/noindex> per la piattaforma Android. L'obiettivo finale \u00e8 quello di consentire l'uso in Android di un unico kernel comune, invece di preparare diverse build specifiche per ogni dispositivo sulla base di un ramo specifico per Android. <noindex><a rel=\"nofollow\" href=\"https:\/\/source.android.com\/devices\/architecture\/kernel\/android-common\">Android Common Kernel<\/a><\/noindex>. Questo obiettivo \u00e8 gi\u00e0 stato parzialmente raggiunto, e alla conferenza \u00e8 stato mostrato uno smartphone Android Xiaomi Poco F1 con un firmware basato sul kernel Linux normale e non modificato.<\/p>\n<p>Dopo la conclusione del progetto, i fornitori saranno invitati a fornire un kernel di base basato sul kernel principale di Linux. I componenti per il supporto hardware saranno forniti dai fornitori esclusivamente sotto forma di moduli kernel aggiuntivi, senza applicare patch al kernel. I moduli dovranno garantire compatibilit\u00e0 con il kernel principale a livello di spazio dei nomi dei simboli del kernel. Tutte le modifiche che riguardano il kernel principale saranno promosse verso l'upstream. Per mantenere la compatibilit\u00e0 con i moduli proprietari all'interno dei rami LTS, si propone di mantenere API e ABI del kernel in forma stabile, il che permetter\u00e0 di mantenere la compatibilit\u00e0 dei moduli con gli aggiornamenti per ogni ramo comune del kernel.<\/p>\n<p><center><img decoding=\"async\" alt=\"Google sta lavorando per utilizzare il kernel Linux standard su Android.\" src=\"\/wp-content\/uploads\/2019\/11\/18f8a41befddc7d81c07b9c6d1bf44c2.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>Nel corso dell'anno, sono state trasferite nel kernel principale di Linux le seguenti funzionalit\u00e0 dalla versione del kernel per Android: il sottosistema PSI (Pressure Stall Information) per l'analisi delle informazioni sui tempi di attesa per ottenere varie risorse (CPU, memoria, input\/output), il filesystem virtuale BinderFS per il meccanismo di interprocess communication Binder e il pianificatore energeticamente efficiente EAS (Energy Aware Scheduling). In futuro, si prevede di trasferire Android dal pianificatore specifico SchedTune a un nuovo sottosistema UtilClamp sviluppato da ARM, basato su cgroups2 e sui meccanismi standard del kernel.<\/p>\n<p><center><img decoding=\"async\" alt=\"Google sta lavorando per utilizzare il kernel Linux standard su Android.\" src=\"\/wp-content\/uploads\/2019\/11\/2db4ca76f6a87b2ad28a7510a4deb79c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>Ricordiamo che fino ad ora il kernel per la piattaforma Android seguiva diverse fasi di preparazione:<\/p>\n<ul>\n<li class=\"l\"> Basato sui principali kernel LTS (3.18, 4.4, 4.9 e 4.14), \u00e8 stata creata una ramificazione denominata &#171;Android Common Kernel&#187;, in cui sono stati trasferiti patch specifici per Android (in passato l'entit\u00e0 delle modifiche raggiungeva diversi milioni di righe, ma ultimamente le modifiche sono state ridotte a diverse migliaia di righe di codice).\n<li class=\"l\"> Sulla base dell'&#171;Android Common Kernel&#187;, i produttori di chip, come Qualcomm, hanno creato il &#171;SoC Kernel&#187;, che include estensioni per il supporto dell'hardware.\n<li class=\"l\"> Sulla base del &#171;SoC Kernel&#187;, i produttori di dispositivi hanno creato il &#171;Device Kernel&#187;, includendo modifiche relative al supporto di hardware aggiuntivo, schermi, fotocamere, sistemi audio, e cos\u00ec via.\n<\/ul>\n<p><center><img decoding=\"async\" alt=\"Google sta lavorando per utilizzare il kernel Linux standard su Android.\" src=\"\/wp-content\/uploads\/2019\/11\/3a7d495f71eaef927e79912ca62776d8.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>In sostanza, per ogni dispositivo veniva creato un proprio kernel, che non poteva essere utilizzato su altri dispositivi. Questo schema complicava notevolmente l'implementazione di aggiornamenti per risolvere vulnerabilit\u00e0 e il passaggio a nuovi rami del kernel. Ad esempio, il pi\u00f9 recente smartphone Pixel 4, uscito in ottobre, \u00e8 dotato di un kernel Linux 4.14, rilasciato due anni fa. Parzialmente, Google ha cercato di semplificare la manutenzione promuovendo il sistema <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48588\">Treble<\/a><\/noindex>, che consente ai produttori di creare componenti di supporto hardware universali, non legati a specifiche versioni di Android e alle release del kernel Linux utilizzate. Treble consente di utilizzare come base gli aggiornamenti gi\u00e0 pronti da Google, integrando al loro interno componenti specifici per il dispositivo. <\/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=\"Riproduci 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>Fonte: <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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - 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\" 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