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Message-ID: <d367441f-bba0-30eb-787a-89b0c06a65dd@linuxfoundation.org>
Date:   Tue, 14 Dec 2021 13:27:12 -0700
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Shuah Khan <shuah@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH] selftests/bpf: remove ARRAY_SIZE defines from tests

On 12/11/21 6:53 PM, Alexei Starovoitov wrote:
> On Fri, Dec 10, 2021 at 9:34 AM Shuah Khan <skhan@...uxfoundation.org> wrote:
>>
>> ARRAY_SIZE is defined in multiple test files. Remove the definitions
>> and include header file for the define instead.
>>
>> Remove ARRAY_SIZE define and add include bpf_util.h to bring in the
>> define.
>>
>> Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
>> ---
>>   tools/testing/selftests/bpf/progs/netif_receive_skb.c | 5 +----
>>   tools/testing/selftests/bpf/progs/profiler.inc.h      | 5 +----
>>   tools/testing/selftests/bpf/progs/test_sysctl_loop1.c | 5 +----
>>   tools/testing/selftests/bpf/progs/test_sysctl_loop2.c | 4 +---
>>   tools/testing/selftests/bpf/progs/test_sysctl_prog.c  | 5 +----
>>   5 files changed, 5 insertions(+), 19 deletions(-)
>>
>> diff --git a/tools/testing/selftests/bpf/progs/netif_receive_skb.c b/tools/testing/selftests/bpf/progs/netif_receive_skb.c
>> index 1d8918dfbd3f..7a5ebd330689 100644
>> --- a/tools/testing/selftests/bpf/progs/netif_receive_skb.c
>> +++ b/tools/testing/selftests/bpf/progs/netif_receive_skb.c
>> @@ -5,6 +5,7 @@
>>   #include <bpf/bpf_helpers.h>
>>   #include <bpf/bpf_tracing.h>
>>   #include <bpf/bpf_core_read.h>
>> +#include <bpf/bpf_util.h>
> 
> It doesn't look like you've built it.
> 
> progs/test_sysctl_prog.c:11:10: fatal error: 'bpf/bpf_util.h' file not found
> #include <bpf/bpf_util.h>
>           ^~~~~~~~~~~~~~~~
>    CLNG-BPF [test_maps] socket_cookie_prog.o
> progs/test_sysctl_loop2.c:11:10: fatal error: 'bpf/bpf_util.h' file not found
> #include <bpf/bpf_util.h>
>           ^~~~~~~~~~~~~~~~
> 1 error generated.
> In file included from progs/profiler2.c:6:
> progs/profiler.inc.h:7:10: fatal error: 'bpf/bpf_util.h' file not found
> #include <bpf/bpf_util.h>
>           ^~~~~~~~~~~~~~~~
> 

Sorry about that. I built it - I think something is wrong in my env. Build
fails complaining about not finding vmlinux - I overlooked that the failure
happened before it got to progs.

Error: failed to load BTF from .../vmlinux: No such file or directory

I do have the kernel built with gcc. Is there a clang dependency?

thanks,
-- Shuah

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