linux-kernel - RE: [ANN] Kselftest integration into Kernel CI

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Date:   Fri, 28 Feb 2020 17:50:36 +0000
From:   "Bird, Tim" <Tim.Bird@...y.com>
To:     Shuah Khan <skhan@...uxfoundation.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:     Kevin Hilman <khilman@...libre.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: RE: [ANN] Kselftest integration into Kernel CI



> -----Original Message-----
> From:  Shuah Khan
> 
> Integrating Kselftest into Kernel CI rings depends on Kselftest build
> and install framework to support Kernel CI use-cases. I am kicking off
> an effort to support Kselftest runs in Kernel CI rings. Running these
> tests in Kernel CI rings will help quality of kernel releases, both
> stable and mainline.
> 
> What is required for full support?
> 
> 1. Cross-compilation & relocatable build support
> 2. Generates objects in objdir/kselftest without cluttering main objdir
> 3. Leave source directory clean
> 4. Installs correctly in objdir/kselftest/kselftest_install and adds
>     itself to run_kselftest.sh script generated during install.
> 
> Note that install step is necessary for all files to be installed for
> run time support.
> 
> I looked into the current status and identified problems. The work is
> minimal to add full support. Out of 80+ tests, 7 fail to cross-build
> and 1 fails to install correctly.
> 
> List is below:
> 
> Tests fails to build: bpf, capabilities, kvm, memfd, mqueue, timens, vm
> Tests fail to install: android (partial failure)
> Leaves source directory dirty: bpf, seccomp
> 
> I have patches ready for the following issues:
> 
> Kselftest objects (test dirs) clutter top level object directory.
> seccomp_bpf generates objects in the source directory.
> 
> I created a topic branch to collect all the patches:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git/?h=kernelci
> 
> I am going to start working on build problems. If anybody is
> interested in helping me with this effort, don't hesitate to
> contact me. I first priority is fixing build and install and
> then look into tests that leave the source directory dirty.

I'm interested in this.  I'd like the same cleanups in order to run
kselftest in Fuego, and I can try it with additional toolchains
and boards.  Unfortunately, in terms of running tests, almost all
the boards in my lab are running old kernels.  So the tests results
aren't useful for upstream work.  But I can still test
compilation and install issues, for the kselftest tests themselves.

> 
> Detailed report can be found here:
> 
> https://drive.google.com/file/d/11nnWOKIzzOrE4EiucZBn423lzSU_eNNv/view?usp=sharing

Is there anything you'd like me to look at specifically?  Do you want me to start
at the bottom of the list and work up?  I could look at 'vm' or 'timens'.

   -- Tim