On Sat, 7 Nov 2015, Hans Petter Selasky wrote:
On 11/07/15 07:19, Bruce Evans wrote:
I don't know if CTLFLAG_RWTUN with SYSCTL_PROC() actually works for all
types, but it is used with CTLFLAG_STRING for kern.corefile. This is
another bogus undocumented tunable. It is better documented as a sysctl
than most since it is old so it is documented in sysctl(8). It is not
documented as a tunable there of course. It is also not documented as
a tunable in core(5).
SYSCTL_PROC() works with RWTUN from /boot/loader.conf, as long as the
procedure callback handles early calls during boot.
Hmm, that would be messy if it wants to do hardware stuff like
sysctl_kern_eventtimer_periodic() does.
Timercounters only have 1 MI tunable
(sysctl_kern_timecounter_adjprecision). It has a (cold) check to avoid
doing too much.
Bruce
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