[PATCH v3] selftests: sched_ext: Add sched_ext as proper selftest target

[David Vernet]

On Tue, Oct 08, 2024 at 05:35:18PM +0200, Björn Töpel wrote:
> From: Björn Töpel <bjorn at rivosinc.com>
> 
> The sched_ext selftests is missing proper cross-compilation support, a
> proper target entry, and out-of-tree build support.
> 
> When building the kselftest suite, e.g.:
> 
>   make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu-  \
>     TARGETS=sched_ext SKIP_TARGETS="" O=/output/foo \
>     -C tools/testing/selftests install
> 
> or:
> 
>   make ARCH=arm64 LLVM=1 TARGETS=sched_ext SKIP_TARGETS="" \
>     O=/output/foo -C tools/testing/selftests install
> 
> The expectation is that the sched_ext is included, cross-built, the
> correct toolchain is picked up, and placed into /output/foo.
> 
> In contrast to the BPF selftests, the sched_ext suite does not use
> bpftool at test run-time, so it is sufficient to build bpftool for the
> build host only.
> 
> Add ARCH, CROSS_COMPILE, OUTPUT, and TARGETS support to the sched_ext
> selftest. Also, remove some variables that were unused by the
> Makefile.
> 
> Signed-off-by: Björn Töpel <bjorn at rivosinc.com>

Thanks for the improvements!

Acked-by: David Vernet <void at manifault.com>
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