netdev - Re: Linux 5.4 - bpf test build fails

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Date:   Tue, 24 Sep 2019 10:39:23 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Cristian Marussi <cristian.marussi@....com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: Linux 5.4 - bpf test build fails

On 9/24/19 10:03 AM, Shuah Khan wrote:
> On 9/24/19 9:52 AM, Cristian Marussi wrote:
>> Hi Shuah
>>
>> On 24/09/2019 16:26, Shuah Khan wrote:
>>> Hi Alexei and Daniel,
>>>
>>> bpf test doesn't build on Linux 5.4 mainline. Do you know what's
>>> happening here.
>>>
>>>
>>> make -C tools/testing/selftests/bpf/
>>
>> side question, since I'm writing arm64/ tests.
>>
>> my "build-testcases" following the KSFT docs are:
>>
>> make kselftest
>> make TARGETS=arm64 kselftest
>> make -C tools/testing/selftests/
>> make -C tools/testing/selftests/ INSTALL_PATH=<install-path> install
>> make TARGETS=arm64 -C tools/testing/selftests/
>> make TARGETS=arm64 -C tools/testing/selftests/ 
>> INSTALL_PATH=<install-path> install
>> ./kselftest_install.sh <install-path>

Cristian,

That being said, I definitely want to see this list limited to
a few options.

One problem is that if somebody wants to do just a build, there
is no option from the main makefile. I have sent support for that
a few months ago and the patch didn't got lost it appears. I am
working on resending those patches. The same is true for install.
I sent in a patch for that a while back and I am going to resend.
These will make it easier for users.

I would really want to get to supporting only these options:

These are supported now:

make kselftest
make TARGETS=arm64 kselftest (one or more targets)

Replace the following:

make -C tools/testing/selftests/ with

make kselftes_build option from main makefile

Replace this:
make -C tools/testing/selftests/ INSTALL_PATH=<install-path> install

with
make kselftest_install

That way we can support all the use-cases from the main Makefile

thanks,
-- Shuah