Ukuqaliswa kwe-CMOV nguLinus Torvalds kuthuthukisa ukusebenza nokuphepha kwe-Linux

Isibuyekezo sokugcina: 07/02/2025
Author: Isaka
  • U-Linus Torvalds uhlanganise imiyalo ye-CMOV ku-kernel ye Linux ukwenza ngcono ukusebenza kwakho.
  • I-CMOV iqeda ukuqagela kwe-jump kuma-processor, okwenza isistimu isebenze kahle futhi ivikeleke.
  • Ukuthuthukiswa kufakwe ku-Linux kernel 6.14 noma ngaphezulu, kuthuthukisa ukusatshalaliswa okudumile okufana no-Ubuntu ne-Fedora.
  • Abasebenzisi bangathola lezi zinzuzo ngokubuyekeza amasistimu abo ku-kernel yakamuva etholakalayo.

linus torvalds

I-Linux, eyaziwa njengesistimu yokusebenza eqinile y thembekile, iyaqhubeka nokuguquguquka ukuze ihlangabezane nezidingo ezikhulayo ze ukusebenza y ukuphepha emhlabeni wedijithali. U-Linus Torvalds, umdali we-Linux kernel, usebenzise intuthuko ebalulekile ethembisa ukumaka ngaphambi nangemuva kokuhlangenwe nakho komsebenzisi.

Ushintsho olubalulekile lusekwemukelweni komyalelo we-CMOV (Conditional Move)., ukulungiselelwa kwezakhiwo ze-x86 ne-x86-64 lokho yenza lula y kuyashesha ukusebenza kwesistimu yokusebenza. Lesi sibuyekezo, esitholakalayo esiqala nge-Linux 6.14 kernel, sibonisa ukuthi umphakathi we-Linux awuyeki kanjani ukusebenza ekuthuthukisweni okuqhubekayo kweplatifomu yawo.

Iyini i-CMOV futhi iyishintsha kanjani i-Linux?

i-kernel linux

Imiyalelo ye-CMOV ivumela amaphrosesa yenza imisebenzi enemibandela ngaphandle kokuncika ekubikezelweni kwegatsha, inqubo engase ibe nephutha kuma-architecture athile. Ngaphansi kwezimo zendabuko, lapho iphrosesa ihlangabezana nemiyalelo enemibandela (njengokuthi "uma lokhu kwenzeka, yenza lokho"), izama ukubikezela umphumela ukuze isebenze ngokugcwele. el tiempo wokubulawa. Nokho, uma i- isibikezelo siyehluleka, umsebenzi owenziwe ngaphambilini uyalahlwa, othinta kokubili ukusebenza nokuphepha kwesistimu.

Ngokuhlanganiswa kwe-CMOV, Abacubungula benza izabelo ezinemibandela ngomyalelo owodwa, ukuqeda isidingo sokubikezela kanye ngcono kakhulu ukusebenza kahle. Lokhu futhi kunciphisa ubungozi obunamandla obuhlobene nokuqagelwa kwemiyalelo, inkinga okuxoxwa ngayo kabanzi kulandela ukuba sengozini okufana ne-Specter ne-Meltdown.

Umthelela osebenzayo kubasebenzisi be-Linux

Ukufakwa kwe-CMOV ku-Linux kernel kunezinzuzo eziningi. Ngokususa i gxuma izibikezelo, ikhodi yenziwe lula, ivumela ukusetshenziswa ngokuphumelelayo kwezinsiza zesistimu. Lokhu akusho nje ukuthi i-Linux izoba ngokushesha, kodwa futhi ukuthi kuyoba ephephile ngokumelene nezinsongo ezisebenzisa amaphutha ekubulaweni okucatshangelwayo.

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Futhi, ukuthuthukisa ukusetshenziswa kwamarejista esikhashana Iphinde idlale indima yokunquma. Lesi silungiselelo sivumela imisebenzi eyinkimbinkimbi ukuthi yenziwe ngayo ukushelela okukhulu, okuzuzisa bobabili abathuthukisi, abalawuli besistimu nabasebenzisi abenza imisebenzi yansuku zonke ekusabalaliseni kwabo kwe-Linux.

Ukuze usebenzise lokhu kuthuthukiswa, abasebenzisi badinga nje buyekeza amasistimu akho ku-Linux kernel 6.14 noma kamuva. Ukusabalalisa okudumile okufana no-Ubuntu, i-Fedora noma i-Arch Linux sekuvele kulungiselelwe ukufaka lesi sibuyekezo kumakhosombe abo asemthethweni, okwenza kube lula ukwamukelwa kwaso kubasebenzisi abaningi.

U-Linus Torvalds nokugxila kwakhe emisha

U-Linus Torvalds uyaqhubeka nokukhombisa ukuzibophezela kwakhe ekuthuthukisweni kwe-Linux kernel. Nakuba izibopho zakhe zamanje zihlanganisa ukuphatha umphakathi okhulayo ofaka isandla ku-kernel, i-Torvalds iyaqhubeka nokuthuthuka ukulungiselelwa okubalulekile, njengoba kunjalo nge-CMOV.

Inhloso yalokhu kuthuthukiswa ayihlanganisi kuphela ukusebenza kanye velocity, kodwa futhi uqinise i ukuphepha. Ukubhekana nezinselelo ezilethwa ukuthuthuka kwe hardware kanye nezinsongo zakamuva zokuphepha, i-Linux izimisa njengohlelo olusebenzayo oluya luqina futhi olulungiselelwe kunoma iyiphi indawo.

Kulo mongo, ukwethulwa kwe-CMOV akuyona nje intuthuko yezobuchwepheshe; kuwubufakazi bokugxila okungaguquki komphakathi we-Linux ubuhle. Ngama-patches afana nalokhu, uhlelo lokusebenza luqinisa indima yalo njengethuluzi elibalulekile kubo bobabili abasebenzisi abathuthukile kanye okokuqala abafuna ezinye izindlela ezinokwethenjelwa nezisebenza kahle kakhulu.

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