cvs commit: src/sys/conf options.i386 src/sys/i386/i386 tsc.c src/sys/i386/conf NOTES

[Bruce Evans]

On Fri, 4 Apr 2003, Tor Egge wrote:

> tegge       2003/04/04 15:54:47 PST
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/conf             options.i386
>     sys/i386/i386        tsc.c
>     sys/i386/conf        NOTES
>   Log:
>   Add SMP_TSC option, which can be used on SMP systems where the TSCs
>   are synchronized to reduce context switch cost.

This should be implemented by making the TSC timecounter available on
all systems that have a TSC, but not actually using it for the SMP case
unless it is enabled using sysctl "machdep.timecounter.hardware=TSC".

Bruce