CVS commit: src/sys/kern

["Matt Thomas" <matt%netbsd.org@localhost>]

Module Name:    src
Committed By:   matt
Date:           Fri Sep 19 17:52:43 UTC 2014

Modified Files:
        src/sys/kern: kern_mutex.c

Log Message:
Allow MD code to use something other than __cpu_simple_lock_t for doing spin
locks but use the same logic.

MUTEX_SPINBIT_LOCK_INIT
MUTEX_SPINBIT_LOCK_TRY
MUTEX_SPINBIT_LOCKED_P
MUTEX_SPINBIT_LOCK_UNLOCK
MUTEX_INITIALIZE_SPIN_IPL

For those platforms without sub-word CAS, you can use these to place the
mutex lock and ipl inside a full machine word and use CAS to update them.


To generate a diff of this commit:
cvs rdiff -u -r1.59 -r1.60 src/sys/kern/kern_mutex.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.