diff options
Diffstat (limited to 'usr.sbin/apmconf/apmconf.8')
| -rw-r--r-- | usr.sbin/apmconf/apmconf.8 | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/usr.sbin/apmconf/apmconf.8 b/usr.sbin/apmconf/apmconf.8 new file mode 100644 index 0000000..d49e6de --- /dev/null +++ b/usr.sbin/apmconf/apmconf.8 @@ -0,0 +1,60 @@ +.\" LP (Laptop Package) +.\" +.\" Copyright (c) 1994 by HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp> +.\" +.\" This software may be used, modified, copied, and distributed, in +.\" both source and binary form provided that the above copyright and +.\" these terms are retained. Under no circumstances is the author +.\" responsible for the proper functioning of this software, nor does +.\" the author assume any responsibility for damages incurred with its +.\" use. +.Dd November 1, 1994 +.Dt APMCONF 8 +.Os +.Sh NAME +.Nm apmconf +.Nd configure APM BIOS driver +.Sh SYNOPSIS +.Nm apmconf +.Op Fl e +.Op Fl d +.Op Fl h +.Op Fl t +.Sh DESCRIPTION +.Nm apmconf +is used to configure the APM (Advanced Power Management) BIOS driver +.Xr apm 4 +on laptop PCs. +.Pp +The following options are available. +.Bl -tag -width indent +.It Fl e +Enable power management. +.It Fl d +Disable power management. +.El +.Pp +These options enable/disable power management functions provided by +.Xr apm 4 . +.Bl -tag -width indent +.It Fl h +Enable HLT instruction in kernel context switch routine. +.It Fl t +Disable HLT instruction in kernel context switch routine. +.El +.Pp +These options are not necessary for almost all APM implementations, +but for some implementations whose +.Dq Pa Idle CPU +call executes both CPU clock slowdown and HLT instruction, +.Fl t +is necessary to prevent the system from reducing its peak performance. +See +.Xr apm 4 +for details. +.Sh SEE ALSO +.Xr apm 4 , +.Xr apm 8 , +.Xr zzz 8 +.Sh AUTHOR +HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp> (Keio Univ., Japan) |
