[parisc-linux] ldcw in __pthread_acquire

[Alan Cox]

> > We use user space locks for stuff like pthreads on most platforms with
> > the kernel doing the contention cases. I'm not arguing that it wouldnt be nic
> > to let the kernel do it all if we had cheap syscalls. 
> 
> Sounds perfectly reasonable.  How hard is it to put arch-specific things
> into that path?

Its all arch specific, so you can do it right for hppa. The code in db3 is
also arch specific (falling back to kernel) as is the Mozilla code.