Compilation issue Kernel 5.4

[Bouliere83]

Hi,

I was using KTF on a project with a Linux Kernel 5.3 (Ubuntu 18.04), but after passing on 5.4 (Ubuntu 20.04), the KTF Framework cannot compile.
From what i saw it is due to this patch :
https://github.com/torvalds/linux/commit/9adeaa226988b97bc15928e12f40a9863134467c
The memcg_cache_params is not define anymore in a public header, instead is it located in a internal header.
Do you have any plans to fix it?

Thanks you.

[Yao-J]

Yes, i met same error on Kernel 5.4 , so is it expected when can fix it ?

[alan-maguire]

The fix is simple but needs to be pushed; I'm working on getting that done. Hopefully should be sometime over the next few days.

[Bouliere83]

Ok that some good news, thank you.

[alan-maguire]

finally got write access; I've pushed a bunch of changes that Knut and I authored that should hopefully resolve various compilation issues; let me know if you run into any trouble. thanks!

[Yao-J]

Hi, alan-maguire
Could you show which commit can fix this issue ？
Actually, this issue is related to struct memcg_cache_params, but i can't find related fix in the commit log. The latest fix is "ktf: replace struct timespec with struct timespec64"

[knuto]

Take a look at this commit

[Yao-J]

Hi,
new commit can fix this issue, but it will prompt "error: unknown warning option '-Wno-packed-bitfield-compat'" in lib/Makefile
This option available on kernel 4.14 , wonder why it can't pass on 5.4 ?

[knuto]

Are you perhaps not using gcc? The option seems present still? Anyway you can safely just remove the option from Makefile.am as KTF does not use bitfields, this is just a remains from the predecessor of KTF and should have been removed.