[LITMUS^RT] LITMUS^RT on v4.9: call for testing

[Namhoon Kim]

I downloaded the wip-port branch and tried to compile for IMX6 processors.
The following compilation error has occurred.

  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CHK     include/generated/bounds.h
  CHK     include/generated/timeconst.h
  CHK     include/generated/asm-offsets.h
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CHK     kernel/config_data.h
  CC      litmus/sched_pfp.o
In file included from ./arch/arm/include/asm/uaccess.h:18:0,
                 from ./include/linux/uaccess.h:5,
                 from litmus/sched_pfp.c:26:
./arch/arm/include/asm/domain.h:88:28: error: expected identifier or ‘(’
before ‘&’ token
./arch/arm/include/asm/domain.h:88:28: error: expected ‘)’ before ‘->’ token
In file included from ./include/linux/uaccess.h:5:0,
                 from litmus/sched_pfp.c:26:
./arch/arm/include/asm/uaccess.h: In function ‘uaccess_save_and_enable’:
./arch/arm/include/asm/uaccess.h:61:28: error: expected expression before
‘)’ token
make[1]: *** [litmus/sched_pfp.o] Error 1
make: *** [litmus] Error 2

The compilation environment is:
cross-compiler : arm-linux-gnueabihf-gcc version 4.7.3
kernel configuration : default imx_v6_v7 configuration (make
imx_v6_v7_defconfig)

Does anyone compile the wip-port branch for ARM architectures?

Thanks,

Namhoon

On Mon, Feb 27, 2017 at 6:37 PM, Namhoon Kim <namhoonk at cs.unc.edu> wrote:

> Hi,
>
> We will compile and test the wip-port branch on our Freescale IMX6
> platform (ARM arch). I will report the results in a few days.
>
> Thanks,
>
> Namhoon
>
> On Mon, Feb 27, 2017 at 6:05 PM, Björn Brandenburg <bbb at mpi-sws.org>
> wrote:
>
>> Dear LITMUS^RT community,
>>
>> I’ve prepared an initial port of LITMUS^RT to Linux 4.9.13. It compiles
>> and runs on my x86 box, and even survives light testing. Let’s make this
>> the next release. Obviously, more testing and cleanup is required. Thus:
>>
>>                  ******** Please help out with testing! ********
>>
>> The port is in the wip-port branch on Github:
>>
>>         https://github.com/LITMUS-RT/litmus-rt/commits/wip-port
>>
>> Please give it a try.
>>
>> Some details on what I’ve done:
>>
>> First, I squashed the history of the current master branch, the result of
>> which you can find in the sip-squashed branch:
>>
>>         https://github.com/LITMUS-RT/litmus-rt/commits/wip-squashed
>>
>> This branch is identical to the current master branch, modulo the
>> simplified history.
>>
>> Next, I’ve rebased wip-squashed on top of Linux 4.9.13. Some notes:
>>
>> - the hrtimer API has changed; this required some adjustments.
>>
>> - I’ve dropped the SRP ceiling blocking hook. This legacy implementation
>> was no longer working right and causing too many problem. SRP support will
>> have to be re-implemented (if anyone still cares).
>>
>> - There were many merge conflicts due to regular kernel churn. Most of
>> them I could resolve in ways that seem like they ought to work, but only
>> heavy workloads will show if the kernel holds up.
>>
>>                  ******** What to do ********
>>
>> - Download, compile, and run the version in the wip-port branch.
>>
>> - Run on the machines that you usually use for your research and tests.
>>
>> - Run with both debug and benchmarking configs.
>>
>> - If you use non-x86 hardware, see if the kernel still compiles for your
>> favorite platform.
>>
>> - Run your usual benchmarks / workloads.
>>
>> - Report any crashes / warnings / performance regressions / anything else
>> surprising.
>>
>> - Ideally, submit patches to fix both minor and major breakage.
>>
>> Note: you’ll need the latest liblitmus to work with this kernel.
>>
>> I know testing is not the most fun activity on the planet, but if you
>> want to have a stable base system for your next project, now is the time to
>> chip in and help out the project. The plan is to make 4.9 the base version
>> for at least the next two years, so any effort invested now is going to pay
>> off for some time to come.
>>
>> Thanks,
>> Björn
>>
>>
>>
>>
>> _______________________________________________
>> litmus-dev mailing list
>> litmus-dev at lists.litmus-rt.org
>> https://lists.litmus-rt.org/listinfo/litmus-dev
>>
>
>
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