mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-05 02:21:52 +09:00
e4b26c9f75
Now that there is no overwrap between symbols from ELF files and ones from Module.symvers. So, the 'exported twice' warning should be reported irrespective of where the symbol in question came from. The exceptional case is external module; in some cases, we build an external module to provide a different version/variant of the corresponding in-kernel module, overriding the same set of exported symbols. You can see this use-case in upstream; tools/testing/nvdimm/libnvdimm.ko replaces drivers/nvdimm/libnvdimm.ko in order to link it against mocked version of core kernel symbols. So, let's relax the 'exported twice' warning when building external modules. The multiple export from external modules is warned only when the previous one is from vmlinux or itself. With this refactoring, the ugly preloading goes away. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.