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

[Mark Brown]

On Mon, Oct 07, 2024 at 06:45:32PM +0200, Björn Töpel wrote:
> Mark Brown <broonie at kernel.org> writes:

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

> It tries to find a kernel with BTF:
>   | VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)                                    \
>   |                      $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)            \
>   |                      ../../../../vmlinux                                        \
>   |                      /sys/kernel/btf/vmlinux                                    \
>   |                      /boot/vmlinux-$(shell uname -r)

> Similar to all the other selftests using BPF.

> (Oh, and at some point the BPF parts should be in lib.mk...)

Ah, that'll have found my host kernel.  There should probably be some
sort of check that it's at least targeting the correct architecture
since this *will* go wrong.
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