cvs commit: src/share/man/man9 locking.9 rmlock.9 src/sys/conf files src/sys/kern kern_rmlock.c subr_lock.c subr_pcpu.c subr_smp.c src/sys/sys _rmlock.h lock.h pcpu.h rmlock.h smp.h

Alfred Perlstein alfred at
Sun Nov 25 17:28:56 PST 2007

* Julian Elischer <julian at> [071125 10:05] wrote:
> not sure why sx-locks exist at all, as they seem to be a variant of sleep.
> I think it's just a convenience function set to allow one to implement
> a sleep-derived synchronisation.

You are correct, sx locks are a faster replacement for hand rolled
msleep locks.  They're not only easier to read, but the underlying
implementation is faster.

- Alfred Perlstein

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