Remove cpu argument from clh_lock_acquire/release, it is never
valid to call them with something else than getCurrentCPUIndex().
Use clh_is_self_in_queue() instead of poking into lock internals
in ipiStallCoreCallback().
Add some comments from the paper to make it easier to match the
implementation with the description in the paper it's based on.
Don't use confusingly different naming, but follow naming from
the paper: Rename 'node' to 'myreq' and 'next' to 'watch', etc.
Signed-off-by: Indan Zupancic <Indan.Zupancic@mep-info.com>
4e74d029cc