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TODO revision 1.8.2.3 
      1 $NetBSD: TODO,v 1.8.2.3 2007/09/10 10:54:04 skrll Exp $
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      3 Bugs to fix:
      4 
      5 - Add locking to ld.elf_so so that multiple threads doing lazy binding
      6   doesn't trash things.
      7 
      8 Interfaces/features to implement:
      9 
     10 - Realtime exensions: priority scheduling, priority inheritance.
     11 
     12 - Figure out how to use registers reserved in the ABI to implement
     13   pthread_self(). This will allow for assembly lock stubs.
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     15 - Allow threads to change their stack size. This probably depends on the
     16   above item.
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     18 - Have a user/kernel shared page that:
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     20   o Has a hint mechanism that gives us a clue about whether an LWP is
     21     currently running on another CPU. This could be used for adaptive locks,
     22     but would need to be cheap to do in-kernel.
     23 
     24   o Perhaps has a flag value that's reset when a detached LWP is into the
     25     kernel and lwp_exit1(), meaning that its stack can be reclaimed. Again,
     26     may or may not be worth it. Currently we test for this with _lwp_kill()
     27     which is very inefficient.
     28 
     29 - Keep a pool of dead LWPs so that we do not have take the full hit of
     30   _lwp_create() every time pthread_create() is called.
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