On Saturday 08 January 2011, Sam Ravnborg wrote: > We need a variables to express: > In include/asm-generic/Kbuild.asm > - This file exists in a generic variant and it is exported. > The arch may use it verbatim or may have a local variant Actually, this is not how we traditionally use Kbuild.asm: This file is only included from the other asm/Kbuild files to get the list of common files that should be exported from the architectures. Originally, this included even files that had no asm-generic counterpart, but that has probably changed now. The naming of that file may have been a bit confusing. We already have the list of exported files in include/asm-generic/Kbuild that sort of does what you describe. > In arch/$(ARCH)/include/Kbuild.asm-generic > - This file is provided verbatim by asm-generic I would just put this information into the arch/$(ARCH)/include/Kbuild file, with a different variable name. The other complication is that not all the files that an architecture may take verbatim from asm-generic are also exported. > Something like: > > export-y - for files listed in Kbuild.asm > generic-y - for files listed in Kbuild.asm-generic > > I will try to come up with a patch that uses this - or something > similar. Ok. Would it be enough to have this?: "generic-y" in arch/$(ARCH)/include/asm/Kbuild: The architecture does not provide this header, the kernel should use the asm-generic version through a generated file. "header-y" in arch/$(ARCH)/include/asm/Kbuild and include/asm-generic/Kbuild.asm: This file gets exported to user space (as before), and may come from either arch/$(ARCH)/include/asm or include/asm-generic (if listed as generic-y). "header-y" in include/asm-generic/Kbuild: The asm-generic version of the header gets installed. We always do this, because there might be reasons to install headers for multiple architectures (with a symlink or similar). We could either install the generated file or a copy of the asm-generic file for any exported header that the architecture does not have itself. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
