On 12/18/2017 02:09 PM, Hendrik Brueckner wrote:
> With 720f228e8d31 ("bpf: fix broken BPF selftest build") the
> inclusion of arch-specific header files changed. Including the
> asm/bpf_perf_event.h on s390, correctly includes the s390 specific
> header file. This header file tries then to include the s390
> asm/ptrace.h and the build fails with:
>
> cc -Wall -O2 -I../../../include/uapi -I../../../lib -I../../../../include/generated -I../../../include test_verifier.c
> +/root/git/linux/tools/testing/selftests/bpf/libbpf.a /root/git/linux/tools/testing/selftests/bpf/cgroup_helpers.c -lcap -lelf -o
> +/root/git/linux/tools/testing/selftests/bpf/test_verifier
> In file included from ../../../include/uapi/asm/bpf_perf_event.h:4:0,
> from ../../../include/uapi/linux/bpf_perf_event.h:11,
> from test_verifier.c:29:
> ../../../include/uapi/../../arch/s390/include/uapi/asm/bpf_perf_event.h:7:9: error: unknown type name 'user_pt_regs'
> typedef user_pt_regs bpf_user_pt_regs_t;
> ^~~~~~~~~~~~
> make: *** [../lib.mk:109: /root/git/linux/tools/testing/selftests/bpf/test_verifier] Error 1
>
> This is caused by a recent update to the s390 asm/ptrace.h file
> that is not (yet) available in the local installation. That means,
> the s390 asm/ptrace.h must be included from the tools/arch/s390
> directory.
>
> Because there is no proper framework to deal with asm specific
> includes in tools/, slightly modify the s390 asm/bpf_perf_event.h
> to include the local ptrace.h header file.
>
> See also discussion on
> https://marc.info/?l=linux-s390&m=151359424420691&w=2
>
> Please note that this needs to be preserved until tools/ is able to
> correctly handle asm specific headers.
>
> References: https://marc.info/?l=linux-s390&m=151359424420691&w=2
> Fixes: 720f228e8d31 ("bpf: fix broken BPF selftest build")
> Signed-off-by: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
> Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
> Cc: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Applied to bpf tree, thanks Hendrik!
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