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List:       freebsd-hackers
Subject:    Re: physical memory addresses & memory locking...
From:       "Ron G. Minnich" <rminnich () Sarnoff ! COM>
Date:       1996-06-29 1:40:52
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I have a simple lock LKM which in essence allows processes to
1) test a lock
2) drop into kernel sleep() if it's set
3) if it's not set, lock it using pentium cswap
4) when clearing it, if there was contention, syscall that does
   a wakeup()

it's very efficient, much more so than sysv semaphores.
If you want it let me know. It's called fastlock. 

ron
   

Ron Minnich                |"Inferno runs on MIPS ..., Intel ..., and AMD's
rminnich@sarnoff.com       |29-kilobit-per-second chip-based architectures ..."
(609)-734-3120             |  Comm. week, may 13, pg. 4. 
ftp://ftp.sarnoff.com/pub/mnfs/www/docs/cluster.html 

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