TODO revision 1.11 
11.11Sad$NetBSD: TODO,v 1.11 2007/09/08 23:00:31 ad Exp $
21.5Sad
31.8SadBugs to fix:
41.2Sthorpej
51.2Sthorpej- Add locking to ld.elf_so so that multiple threads doing lazy binding
61.10Sad  doesn't trash things.
71.2Sthorpej
81.8SadInterfaces/features to implement:
91.2Sthorpej
101.11Sad- Realtime exensions: priority scheduling, priority inheritance.
111.8Sad
121.11Sad- Figure out how to use registers reserved in the ABI to implement
131.11Sad  pthread_self(). This will allow for assembly lock stubs.
141.8Sad
151.11Sad- Allow threads to change their stack size. This probably depends on the
161.11Sad  above item.
171.8Sad
181.11Sad- Have a user/kernel shared page that:
191.5Sad
201.11Sad  o Has a hint mechanism that gives us a clue about whether an LWP is
211.11Sad    currently running on another CPU. This could be used for adaptive locks,
221.11Sad    but would need to be cheap to do in-kernel.
231.5Sad
241.5Sad  o Perhaps has a flag value that's reset when a detached LWP is into the
251.5Sad    kernel and lwp_exit1(), meaning that its stack can be reclaimed. Again,
261.11Sad    may or may not be worth it. Currently we test for this with _lwp_kill()
271.11Sad    which is very inefficient.
281.5Sad
291.5Sad- Keep a pool of dead LWPs so that we do not have take the full hit of
301.10Sad  _lwp_create() every time pthread_create() is called.
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