libpthread removal in 2.34

[Adhemerval Zanella]

On 11/03/2021 18:43, Florian Weimer wrote:
> * Adhemerval Zanella:
> 
>> I can help you on the libpthread removal project, if you want help on work
>> besides review you can lay out the missing interfaces and work work in
>> parallel.
> 
> I think we should probably swap between reviews and writing patches.
> Splitting up the work seems hard because of the Makefile and Versions
> conflicts that are difficult to avoid.  I have an abilist merger, which
> should at least help with incorporating symbol additions due to
> unrelated glibc work.

I consider the merge issue a minor issue, since it is just a mechanical
step to actually fix it. 

> 
> I have a bunch of pending patches in Patchwork right now.  The next step
> after that will be moving the cancellation implementation, then
> mutex/condvar (probably in one big patch).  I had started on the
> mutex/condvar step before, but ran into unwinding interactions (hence
> the present series) and the private-futex issue.  All this should cut
> down struct pthread_functions by quite a bit.
> 
> Removing the $(pthread-compat-wrappers) seems largely independent of
> that.  These symbols sort separately in the Versions file, too.  If you
> could work on that, it would definitely help.  I suggest to follow the
> one-commit-per-file approach, in case we need to track down regressions.
> (My present series already removes longjmp.)

Alright, I will focus on $(pthread-compat-wrappers), I have been working
on some already and I will finish it then.