On Sun, 20 Mar 2011, David Malone wrote:
On Wed, Mar 16, 2011 at 04:34:10PM +1100, Bruce Evans wrote:
Please revert. I use this for setting timecounters from userland. The
sysctl is not a hack, but the primary user interface for managing the
TSC frequency. The kern.timecounter.tc.TSC.frequency sysctl is
secondary, and is readonly anyway, so it cannot be used to manage the
TSC frequency or even the timecounter frequency.
Some people have asked me if I can make kern.timecounter.tc.*.frequency
writeable. I have it on my list of jobs to look at, but haven't had
a chance yet. Are there any obvious problems with this?
No new ones. Just the old ones of updating the frequency and all related
variables without races.
Bruce
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