Re: [RFC PATCH v2 5/7] tools: build kernel selftests in tools_build

[Shuah Khan <skhan@linuxfoundation.org>]

On 10/16/26 08:31, Sasha Levin wrote:
> Add a "Kernel selftests" sub-menu with one entry per selftests directory
> that builds with only a C library and does not write into the source
> tree. Each is built as "make kselftest-all" builds it, with KHDR_INCLUDES
> pointing at the UAPI headers installed in the object tree, but by its own
> make, so the selected ones build in parallel. Selftests whose Makefile
> does not use KHDR_INCLUDES still build against the C library's copy of
> the UAPI headers.
> 
> As with "make kselftest-all", a selftest that fails to build does not
> fail the build unless FORCE_TARGETS is set. kselftest_deps.sh then lists
> the libraries the selftest needs that the compiler cannot link with.
> 
> The selftests do not track header dependencies, so a selftest is built
> again from scratch when its own directory, a header or makefile any
> selftest may share, or the kernel sources and headers it includes (the
> vDSO test includes the architecture's vDSO code) are newer than its last
> build.
> 
> Selftests that need libraries beyond the C library, a vmlinux with BTF,
> or a sanitizer runtime are left out for now.
> 
> Assisted-by: LLM
> Signed-off-by: Sasha Levin <sashal@kernel.org>

Thank you.

Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah