關(guān)于linux操作系統(tǒng)嵌入式機制及快速啟動的研究.pdf

1、首都師范大學(xué)碩士學(xué)位論文關(guān)于linux操作系統(tǒng)嵌入式機制及快速啟動的研究姓名：王亞軍申請學(xué)位級別：碩士專業(yè)：計算機應(yīng)用指導(dǎo)教師：劉金剛20050601ThisthesisResearchesonLinuxOperatingSystemsEmbeddedmechanismandfaststartImainlyresearchintothefollowing：Afteranalyzingthelinuxcoreoriginalcodes1w

2、ilIcompileanewlinuxcorewhichistosatisfytheEmbeddedSystemAnintegratedlinuxoperatingsystemincludesnotonlYacore，butalsoembeddedClibraryandembeddedshellApictureneedsdisplayingwhenthesystemisbootingBycompilingnewscripts，Iarnt

3、ealizethesystemsfaststartandfastexitFirstlythethesisdiscusseshowtomodifythelinuxcoreori西nalcodesBecausesomeaspectsoflinuxoperatingsystemarenotexpectedbyembeddedsystem，linuxcoreoriginalcodesmustbemodifiednethesisanalyzesa

4、ndthenmoditieslinuxcoreoriginalcodesinfouraspects：MemoryManagement：ProcessManagement；FileSystem：NetworkManagement1rhisthesisaimsatexpatiatingonhowtocoverpage—swappingmechanisminlinux00reSemaphoremechanismisaaneffectiveme

5、ansofsynchronizingtaskswhichcompeteagainsteachothertoenterthesamecriticalsectionMostofthesemaphoresusedbvlinuxcorearemutexsemaphoresButlinuxcoredoesn’tdetachtheoperationsonmutexsemaphoresfromthoseoncountingsemaphores111e

6、listoftaskswhichwaittoenterthecriticalsectionisnotoptimalizedbylinuxcoreei山erAnotherquestionisthatthelinuxcoredoesn’tresolyethepriorityinversionproblemscausedbyusingmutexsemaphoreThisPaperbringsoutanewmethodinordertoimlp

7、rovetheapplicationofmutexsemaphoretolinuxcoreInordertoapplylinuxtoembeddedsystem，ImustcutthewholelinuxoperatingsystemincludingitscoreoriginalcodesAtypicallinuxoperatingsystemcontainsthreemainsoftwarelayers：linuxcore、Clib

8、raryandapplicationprogramsThisthesisexpoundshowtomakealintLXoperatingsystemminiaturebymodifyinglinuxkernel，disposinglinuxkernel，usingembeddedClibraryandembeddedshellAsdefault，linesoftextswillbedisplayedontheconsolewhenli

9、nuxsystemstartingThisisredundanttoembeddedsystem’snsersTosubstituteforthat，thisthesisbringsoutanewmethodwhichcanretainapicturewhenlinuxisbootingManyaminutewillbeexhaustedwhenthelinuxsystemstartsorexitsThisistoolongtoawai

10、tforembeddedsystem’susersThisthesisistoshortenthewholeprocedureofstartorexitafteranalyzingitcarefuUyKeywordsLinuxKernel；EmbeddedSystem；EmbeddedLinuxSystem；CriticalSection；Semaphore；MutexSemaphore；priorityinversion；Memory