K 10
svn:author
V 7
attilio
K 8
svn:date
V 27
2007-12-01T11:28:37.000000Z
K 7
svn:log
V 454
MFC kern_mutex.c rev. 1.201 and kern_rwlock.c rev. 1.32:
Simplify adaptive spinning algorithm which should make things faster
when sleeping / waking up waiters.
Also fix a bug with rw_try_upgrade() when adaptive spinning is enabled
as turnstile_lookup() will recurse on ts_lock that will never be
released [1].

[1] Reported by: jeff with Nokia help
Tested by: pho, kris (earlier, bugged version of rwlock part)
Discussed with: jhb, jeff
Approved by: re

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