selftests/bpf: Report placeholder tests as SKIP, not OK

Several verifier test files wrap their contents in a feature gate and provide
a one-line placeholder program in the #else arm, so the file still yields
something when the toolchain or JIT cannot support the tested instructions.

However the placeholder is annotated __success, so it reports as a pass,
whereas this is really a SKIP.

|  #318/1   verifier_ldsx/cpuv4 is not supported by compiler or jit, ...:OK
|  #318     verifier_ldsx:OK

This causes skipped coverage to be overlooked: see the next patch where
BPF_GCC builds miss a whole bunch of test due to clang only gate.

Add a __skip("reason") annotation for a compile-time gate, and use it for the
placeholders.

After this change, above tests reported as

|  #318/1   verifier_ldsx/cpuv4 is not supported by compiler or jit, ...:SKIP
|  #318     verifier_ldsx:SKIP

Signed-off-by: Vineet Gupta <vineet.gupta@linux.dev>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260824210142.3933580-3-vineet.gupta@linux.dev

0 files changed, 0 insertions, 0 deletions