netdev - Re: tdc errors

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Date:   Mon, 31 Jan 2022 07:46:33 -0500
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     Shuah Khan <skhan@...uxfoundation.org>,
        Davide Caratti <dcaratti@...hat.com>
Cc:     Victor Nogueira <victor@...atatu.com>,
        Baowen Zheng <baowen.zheng@...igine.com>,
        Simon Horman <simon.horman@...igine.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        Vlad Buslov <vladbu@...dia.com>,
        David Ahern <dsahern@...il.com>, shuah@...nel.org
Subject: Re: tdc errors

On 2022-01-21 11:27, Shuah Khan wrote:
> On 1/21/22 7:11 AM, Jamal Hadi Salim wrote:
>> On 2022-01-21 04:36, Davide Caratti wrote:
>>> On Thu, Jan 20, 2022 at 8:34 PM Jamal Hadi Salim <jhs@...atatu.com> 
>>> wrote:

[..]


> 
> Several tests check for config support for their dependencies in their
> test code - I don't see any of those in tc-testing. Individual tests
> are supposed to check for not just the config dependencies, but also
> any feature dependency e.g syscall/ioctl.
> 
> Couple of way to fix this problem for tc-testing - enhance the test to
> check for dependencies and skip with a clear message on why test is
> skipped.
> 
> A second option is enhancing the tools/testing/selftests/kselftest_deps.sh
> script that checks for build depedencies. This tool can be enhanced easily
> to check for run-time dependencies and use this in your automation.
> 
> Usage: ./kselftest_deps.sh -[p] <compiler> [test_name]
> 
>      kselftest_deps.sh [-p] gcc
>      kselftest_deps.sh [-p] gcc vm
>      kselftest_deps.sh [-p] aarch64-linux-gnu-gcc
>      kselftest_deps.sh [-p] aarch64-linux-gnu-gcc vm
> 
> - Should be run in selftests directory in the kernel repo.
> - Checks if Kselftests can be built/cross-built on a system.
> - Parses all test/sub-test Makefile to find library dependencies.
> - Runs compile test on a trivial C file with LDLIBS specified
>    in the test Makefiles to identify missing library dependencies.
> - Prints suggested target list for a system filtering out tests
>    failed the build dependency check from the TARGETS in Selftests
>    main Makefile when optional -p is specified.
> - Prints pass/fail dependency check for each tests/sub-test.
> - Prints pass/fail targets and libraries.
> - Default: runs dependency checks on all tests.
> - Optional test name can be specified to check dependencies for it.
> 

Thanks Shuah. We'll look at this approach.
Question: How do we get reports when the bot finds a regression?


cheers,
jamal