futex priority based wakeup

[Benedict, Michael]

Ilya Lipovsky wrote:
> Yes, I am uncertain. If it isn't a major headache, I think
> you can try the
> newest version (I think it's 2.6.1) and see if you get some
> resolution. 
<snip>
> Please do share the outcome!!
> 
> -Ilya

No luck with 2.6.1:

~ $ /lib/libc.so.6
GNU C Library stable release version 2.6.1, by Roland McGrath et al.
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 4.1.1.
Compiled on a Linux 2.6.12 system on 2007-09-10.
Available extensions:
        crypt add-on version 2.1 by Michael Glad and others
        Native POSIX Threads Library by Ulrich Drepper et al
        BIND-8.2.3-T5B
For bug reporting instructions, please see:
<http://www.gnu.org/software/libc/bugs.html>.
~ $ ./bar
unimportant waiting for mutex
important waiting for mutex
main unlocking mutex
unimportant got mutex!
important got mutex!


I will continue investigating and follow up on this thread if I come
across anything.
	-Michael