[PATCH v2] selftests: sched_ext: Add sched_ext as proper selftest target

[Mark Brown]

On Mon, Oct 07, 2024 at 06:00:57PM +0200, Björn Töpel wrote:
> Mark Brown <broonie at kernel.org> writes:
> > On Mon, Oct 07, 2024 at 09:31:32AM +0200, Björn Töpel wrote:

> >   CLNG-BPF create_dsq.bpf.o
> > In file included from create_dsq.bpf.c:9:
> > /home/broonie/git/linux/tools/sched_ext/include/scx/common.bpf.h:33:17: error: use of undeclared identifier 'SCX_DSQ_FLAG_BUILTIN'
> >    33 |         _Static_assert(SCX_DSQ_FLAG_BUILTIN,
> >       |                        ^

> This is most likely due to incorrect VMLINUX_BTF_PATHS, so that
> vmlinux.h is incorrectly generated. Try grepping for
> SCX_DSQ_FLAG_BUILTIN in vmlinux.h.

Yeah, it's not in the generated files:

broonie at finisterre:~/git/linux$ grep SCX_DSQ_FLAG_BUILTIN ./tools/testing/selftests/sched_ext/build/include/vmlinux.h ./tools/testing/selftests/sched_ext/build/obj/bpftool/vmlinux.h
broonie at finisterre:~/git/linux$ 

I didn't actually build a kernel, if the build system needs a kernel
it's just silently not detected that it's missing?
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