{"id":119734,"date":"2024-09-08T15:43:01","date_gmt":"2024-09-08T13:43:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-6-12-namereny-realizovat-vozmozhnost-vklyucheniya-realtime-rezhima"},"modified":"2024-09-08T15:43:01","modified_gmt":"2024-09-08T13:43:01","slug":"v-yadre-linux-6-12-namereny-realizovat-vozmozhnost-vklyucheniya-realtime-rezhima","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/v-yadre-linux-6-12-namereny-realizovat-vozmozhnost-vklyucheniya-realtime-rezhima","title":{"rendered":"V jadre Linux 6.12 pl\u00e1nuj\u00fa implementova\u0165 mo\u017enos\u0165 zapnutia Realtime re\u017eimu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1ri jadra Linux ozn\u00e1mili prenos do vetvy linux-next, ktor\u00e1 sa pou\u017eije pri vytv\u00e1ran\u00ed vydania 6.12, fin\u00e1lnych zmien potrebn\u00fdch na zostavenie jadra s vo\u013ebou PREEMPT_RT, zah\u0155\u0148aj\u00facej prostriedky na pr\u00e1cu v re\u00e1lnom \u010dase. Po schv\u00e1len\u00ed zmien v hlavnej vetve jadra bude re\u017eim PREEMPT_RT dostupn\u00fd pre architekt\u00fary X86, ARM64 a RISC-V. Nesk\u00f4r bude pridan\u00e1 podpora architekt\u00far ARM a POWERPC, pre ktor\u00e9 do jadra zatia\u013e neboli prenesen\u00e9 v\u0161etky patche. <\/p>\n

V\u00fdvoj implement\u00e1cie re\u017eimu re\u00e1lneho \u010dasu pre jadro Linux sa uskuto\u010d\u0148uje od roku 2005 v r\u00e1mci projektu «Realtime-Preempt» («-rt») a od roku 2015 je pod patron\u00e1tom organiz\u00e1cie Linux Foundation. Doteraz bola implement\u00e1cia re\u017eimu PREEMPT_RT dod\u00e1van\u00e1 vo forme extern\u00fdch patchov, na z\u00e1klade ktor\u00fdch niektor\u00e9 distrib\u00facie, ako RHEL, SUSE a Ubuntu, vytvorili samostatn\u00e9 Realtime ed\u00edcie svojich produktov, ktor\u00e9 s\u00fa \u017eiadan\u00e9 v oblastiach, ako s\u00fa finan\u010dn\u00e9 syst\u00e9my, zariadenia na spracovanie zvuku a videa, letectvo, medic\u00edna, robotika, telekomunika\u010dn\u00e9 a priemyseln\u00e9 syst\u00e9my, kde je potrebn\u00e9 zabezpe\u010di\u0165 predv\u00eddate\u013en\u00fd \u010das spracovania udalost\u00ed. <\/p>\n

V roku 2019 sa za\u010dalo presadzovanie patchov vyv\u00edjan\u00fdch v PREEMPT_RT do hlavn\u00e9ho tvoria jadra. Do konfigura\u010dn\u00e9ho s\u00faboru jadra 5.3 bola pridan\u00e1 vo\u013eba PREEMPT_RT na aktiv\u00e1ciu re\u017eimu re\u00e1lneho \u010dasu, ale integr\u00e1cia potrebn\u00fdch zmien pre jeho fungovanie sa natiahla na 5 rokov. Teraz sa t\u00e1to cesta bl\u00ed\u017ei k dokon\u010deniu a pravdepodobne u\u017e vo vydan\u00ed 6.12 bude mo\u017en\u00e9 zostavi\u0165 jadro v re\u017eime PREEMPT_RT bez pou\u017eitia dodato\u010dn\u00fdch patchov. <\/p>\n

Poslednou nepr\u00edtomnou mo\u017enos\u0165ou v jadre, ktor\u00e1 br\u00e1nila aktiv\u00e1cii re\u017eimu PREEMPT_RT, bola podpora nezablokovacieho atomick\u00e9ho v\u00fdstupu cez funkciu printk. T\u00e1to mo\u017enos\u0165 bola teraz prijat\u00e1 do vetvy linux-next. Do vetvy linux-next tie\u017e \u010dak\u00e1 implement\u00e1cia atom\u00e1rneho a nezablokovacieho konzoly pre ovl\u00e1da\u010d UART 8250, bez ktorej je v\u00fdstup na konzolu n\u00fadzov\u00fdch spr\u00e1v z k\u00f3du v atom\u00e1rnom kontexte zatia\u013e deaktivovan\u00fd.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u044f\u0434\u0440\u0430 Linux \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u043e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0432 \u0432\u0435\u0442\u043a\u0443 linux-next, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0431\u0443\u0434\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u0440\u0438 \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 6.12, \u0444\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u043b\u044f \u0441\u0431\u043e\u0440\u043a\u0438 \u044f\u0434\u0440\u0430 \u0441 \u043e\u043f\u0446\u0438\u0435\u0439 PREEMPT_RT, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u0439 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 \u0440\u0435\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438. \u041f\u043e\u0441\u043b\u0435 \u043f\u0440\u0438\u043d\u044f\u0442\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u0443\u044e \u0432\u0435\u0442\u043a\u0443 \u044f\u0434\u0440\u0430 \u0440\u0435\u0436\u0438\u043c PREEMPT_RT \u0441\u0442\u0430\u043d\u0435\u0442 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 X86, ARM64 \u0438 RISC-V. \u041f\u043e\u0437\u0434\u043d\u0435\u0435 \u0431\u0443\u0434\u0435\u0442 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 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