perf test: Check environment before start real BPF test
Copying perf to old kernel system results: # perf test bpf 37: Test BPF filter : 37.1: Test basic BPF filtering : FAILED! 37.2: Test BPF prologue generation : Skip However, in case when kernel doesn't support a test case it should return 'Skip', 'FAILED!' should be reserved for kernel tests for when the kernel supports a feature that then fails to work as advertised. This patch checks environment before real testcase. Signed-off-by:Wang Nan <wangnan0@huawei.com> Suggested-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1453715801-7732-7-git-send-email-wangnan0@huawei.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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