K 10
svn:author
V 2
ed
K 8
svn:date
V 27
2009-05-11T18:52:46.324686Z
K 7
svn:log
V 238
Add macros around the sx operations in snp(4).

As an experiment, I changed snp(4) to use a mutex instead of an sx lock.
We can't enable this right now, because Syscons still picks up Giant.
It's nice to already have the framework there.

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