selftests/bpf: Skip perf hw events test if the setup disabled it
The same with commit 4e59afbb ("selftests/bpf: skip nmi test when perf hw events are disabled"), it would make more sense to skip the test_stacktrace_build_id_nmi test if the setup (e.g. virtual machines) has disabled hardware perf events. Fixes: 13790d1c ("bpf: add selftest for stackmap with build_id in NMI context") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20200117100656.10359-1-liuhangbin@gmail.com
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