On Tue, 24 Sep 2002, Rusty Russell wrote:
> > > Is this related to the thread library work that IBM was doing or was
> > > this independently developed?
> >
> > independently developed.
>
> And, ironically, using the futex implementation developed on IBM time 8).
you are right, futexes are really important for all the userspace locking
primitives and thread-joining. And like basically all core kernel code,
futexes were a collaborative effort as well:
* Thanks to Ben LaHaise for yelling "hashed waitqueues" loudly
* enough at me, Linus for the original (flawed) idea, Matthew
* Kirkwood for proof-of-concept implementation.
there are so many prerequisites to this that it's impossible to list them
all. What i meant above were the specific patches developed for recent 2.5
kernels, and the library itself.
Ingo
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