[src/trunk]: src/share/man/man4 Add one bug to the list. (Neither acpicpu(4) ...

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

details:   https://anonhg.NetBSD.org/src/rev/e64f2d0fcfcd
branches:  trunk
changeset: 762897:e64f2d0fcfcd
user:      jruoho <jruoho%NetBSD.org@localhost>
date:      Sat Mar 05 07:47:54 2011 +0000

description:
Add one bug to the list. (Neither acpicpu(4) nor est(4) or powernow(4)
handle possible skew in timers and counters such as TSC.)

diffstat:

 share/man/man4/acpicpu.4 |  14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diffs (35 lines):

diff -r ebcfa6669577 -r e64f2d0fcfcd share/man/man4/acpicpu.4
--- a/share/man/man4/acpicpu.4  Sat Mar 05 07:41:11 2011 +0000
+++ b/share/man/man4/acpicpu.4  Sat Mar 05 07:47:54 2011 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: acpicpu.4,v 1.27 2011/03/04 06:01:25 jruoho Exp $
+.\" $NetBSD: acpicpu.4,v 1.28 2011/03/05 07:47:54 jruoho Exp $
 .\"
 .\" Copyright (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 March 4, 2011
+.Dd March 5, 2011
 .Dt ACPICPU 4
 .Os
 .Sh NAME
@@ -317,6 +317,16 @@
 .Xr acpitz 4 )
 is not yet supported.
 .It
+Depending on the processor, changes in C-, P-,
+and T-states may all skew timers and counters such as
+.Tn TSC .
+This is neither handled by
+.Nm
+nor by
+.Xr est 4
+and
+.Xr powernow 4 .
+.It
 There is currently neither a well-defined, machine-independent
 .Tn API
 for processor performance management nor a