On Mon, Jul 16, 2012 at 4:52 PM, Aft nix <[email protected]> wrote: > Hi, > > The macro expansion of __read_mostly : > > #define __read_mostly __attribute__((__section__(".data..read_mostly")) > > This one is from cache.h > > __init: > #define __init __section(.init.text) __cold notrace > > from init.h > > __exit: > > #define __exit __section(.exit.text) __exitused __cold notrace > > After searching through net i have not found any good explanation of > what is happening there. > > Additonal question : I have heard about various "linker magic" > employed in kernel development. Any information > regarding this will be wonderful. > > cheers > > -- > -aft > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
Using __init means the function code will be removed - saving RAM space i.e., one cannot call the function declared with __init once the initialization is done. I just know the meaning but I am not sure of how it works. This may provide some info on your question even though it did not answer your question. Hope this Helps, Sannu K
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