Re: Issue With real-time patches on 5.15.y

[Joseph Salisbury]

On 5/5/22 19:35, Dave Hansen wrote:
> On 5/5/22 16:18, Joseph Salisbury wrote:
> > The real-time kernel build failure can be resolved by reverting commit
> > b50854eca0e0.  The failure seems to be due to the removal of an include
> > of xstate.h from pkru.h and caused spinlock_t to not be defined.  The
> > commit would only be reverted for the real-time kernel and not any other
> > kernels.  I wanted to see if reverting the commit is the proper
> > approach, or if cherry-picking additional commits might be a better
> > solution in preparation for additional changes that might be coming in
> > the future?
> >
> > Any suggestions would be greatly appreciated.
> I thought you distro folks were the franenkernel experts. :)
>
> But, seriously...  This isn't rocket science.  Just look at the pkru.h
> in your tree and figure out what includes it needs.  If it needs FPU
> gunk, include the FPU header.  If you get a compile error for spinlock_t
> ...  well ...  find the code using spinlock_t and make sure it includes
> spinlock.h.
Thanks for the advice, Dave.

Your suggestion will probably be the easiest approach.  I was just 
trying to limit the amount of frankenkernel changes, since there are 
already so many  :-)  It's always best to stay as close to mainline as 
possible.