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Update for verbose debugging support and add Bruno Ducrot author note.

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This commit is contained in:
njl 2005-04-10 19:27:03 +00:00
parent 024dae9a77
commit 3b0df6583a
1 changed files with 10 additions and 6 deletions
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16
share/man/man4/cpufreq.4
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd February 26, 2005
.Dd April 10, 2005
.Dt CPUFREQ 4
.Os
.Sh NAME
@ -86,7 +86,11 @@ driver for debugging purposes.
.It Va debug.cpufreq.lowest
Lowest CPU frequency in MHz to offer to users.
This setting is also accessible via a tunable with the same name.
This can be used to disable very low levels that may be unusable.
This can be used to disable very low levels that may be unusable on
some systems.
.It Va debug.cpufreq.verbose
Print verbose messages.
This setting is also accessible via a tunable with the same name.
.El
.Sh SUPPORTED DRIVERS
The following device drivers offer absolute frequency control via the
@ -273,6 +277,10 @@ then it should set all elements to
.Xr sysctl 8
.Sh AUTHORS
.An Nate Lawson
.An Bruno Ducrot
contributed the
.Pa powernow
driver.
.Sh BUGS
The following drivers have not yet been converted to the
.Nm
@ -283,7 +291,3 @@ Notification of CPU and bus frequency changes is not implemented yet.
.Pp
When multiple CPUs offer frequency control, they cannot be set to different
levels and must all offer the same frequency settings.
.Pp
Some very low frequency levels can result in hangs on some systems.
Such levels should be disabled with
.Va debug.cpufreq.lowest .