[src/trunk]: src/share/man/man4 Document the sysctl(8) controls with a note t...

[jruoho <jruoho%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2e8b383a5d2d
branches:  trunk
changeset: 757047:2e8b383a5d2d
user:      jruoho <jruoho%NetBSD.org@localhost>
date:      Wed Aug 11 17:28:59 2010 +0000

description:
Document the sysctl(8) controls with a note that these may be removed in
future versions without further notice.

diffstat:

 share/man/man4/acpicpu.4 |  21 +++++++++++++++++++--
 1 files changed, 19 insertions(+), 2 deletions(-)

diffs (42 lines):

diff -r e6b31ec93c36 -r 2e8b383a5d2d share/man/man4/acpicpu.4
--- a/share/man/man4/acpicpu.4  Wed Aug 11 16:54:10 2010 +0000
+++ b/share/man/man4/acpicpu.4  Wed Aug 11 17:28:59 2010 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: acpicpu.4,v 1.7 2010/08/10 06:10:16 wiz Exp $
+.\" $NetBSD: acpicpu.4,v 1.8 2010/08/11 17:28:59 jruoho Exp $
 .\"
 .\" Coyright (c) 2010 Jukka Ruohonen <jruohonen%iki.fi@localhost>
 .\" All rights reserved.
@@ -24,7 +24,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd August 10, 2010
+.Dd August 11, 2010
 .Dt ACPICPU 4
 .Os
 .Sh NAME
@@ -197,6 +197,23 @@
 .Fl e
 flag).
 Note that valid per-CPU data is available only for C-states.
+.Ss System information variables
+The
+.Nm
+driver uses the same
+.Xr sysctl 8
+controls for P-states as the ones provided by the kernel configuration
+.Xr options 4
+.Dv ENHANCED_SPEEDSTEP
+and
+.Dv POWERNOW_K8 .
+Depending on the processor vendor, the second-level node is either
+.Ic machdep.est
+or
+.Ic machdep.powernow .
+Please note that future versions of
+.Nm
+may however remove the system control variables without further notice.
 .Sh SEE ALSO
 .Xr acpi 4 ,
 .Xr cpu_idle 9