10 Things Every Linux Programmer Should Know

ResearchLabsLinuxKernelWorkshop, March2004 aboutUserspacevs. kernelspaceMemory allocationProcessesvs. threadsNPTL- Native POSIXT hreadsLibraryOptimizationUsetherightabst ractionlayerforthejobWhy codingstyleis importantWhy youshouldalwayscheck forerrorsTherealcostof softwaredevelopmentPortabilityLinuxKerne lWorkshop, March2004 aboutThistalkis aboutcommonmisconceptions, andthingsIthinkevery aboutlearningfromotherpeople abouthow to s aboutknowinghow thingswork; Knowinghowthingswork opinions, andmineonly. Feelfreeto .LinuxKernelWorkshop, March2004 processis executingeitherin userspace, orin kernelspace. Dependingonwhichpriviledges, addressspaceandaddress(EIP)a processis executingin,we saythatit is eitherin userspace, userspace, a processhasnormalpriviledgesandcanandcan tdocertainthings. Whenexecutingin kernelspace, a processhaseverypriviledge, , suchasprocessesusingiopl().Thebiggestdif ferencebetweenuserspaceandkernelspaceis conceptual-theprogrammer s stateof , March2004 a library function,implementedin thestandardC library.

What this talk is about This talk is about common misconceptions, and things I think every Linux programmer should know. This talk is about learning from other people’s

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