diff options
author | chris <chris@FreeBSD.org> | 1999-09-29 21:43:31 +0000 |
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committer | chris <chris@FreeBSD.org> | 1999-09-29 21:43:31 +0000 |
commit | 4bac1949f4aa1d1df8808c0a96e2ca2b7208a238 (patch) | |
tree | cf92d02becb8515c0af6e26338b59bc1f759f292 /usr.sbin | |
parent | 4a4463eee1bc0507d4b0ad2f369ed03874bc8ee2 (diff) | |
download | FreeBSD-src-4bac1949f4aa1d1df8808c0a96e2ca2b7208a238.zip FreeBSD-src-4bac1949f4aa1d1df8808c0a96e2ca2b7208a238.tar.gz |
Add and activate the man page for memcontrol(8).
Reviewed by: msmith
Diffstat (limited to 'usr.sbin')
-rw-r--r-- | usr.sbin/memcontrol/Makefile | 4 | ||||
-rw-r--r-- | usr.sbin/memcontrol/memcontrol.8 | 113 |
2 files changed, 116 insertions, 1 deletions
diff --git a/usr.sbin/memcontrol/Makefile b/usr.sbin/memcontrol/Makefile index 3d8ffd7..046bb67 100644 --- a/usr.sbin/memcontrol/Makefile +++ b/usr.sbin/memcontrol/Makefile @@ -1,4 +1,6 @@ +# $FreeBSD$ + PROG= memcontrol -NOMAN= yes +MAN8= memcontrol.8 .include <bsd.prog.mk> diff --git a/usr.sbin/memcontrol/memcontrol.8 b/usr.sbin/memcontrol/memcontrol.8 new file mode 100644 index 0000000..5fcc313 --- /dev/null +++ b/usr.sbin/memcontrol/memcontrol.8 @@ -0,0 +1,113 @@ +.\" Copyright (c) 1999 Chris Costello +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd September 28, 1999 +.Dt MEMCONTROL 8 +.Os FreeBSD +.Sh NAME +.Nm memcontrol +.Nd "Control system cache behaviour with respect to memory" +.Sh SYNOPSIS +.Nm +.Ar list +.Op Fl a +.Pp +.Nm +.Ar set +.Fl b Ar base +.Fl l Ar length +.Fl o Ar owner +.Ar attribute +.Pp +.Nm +.Ar clear +.Fl o Ar owner +.Pp +.Nm +.Ar clear +.Fl b Ar base +.Fl l Ar length +.Sh DESCRIPTION +A number of supported system architectures allow the behaviour of the CPU +cache to be programmed to behave differently depending on the region being +written. +.Pp +.Nm Memcontrol +provides an interface to this facility, allowing CPU cache behavior to +be altered for ranges of system physical memory. +.Pp +These ranges are typically power-of-2 aligned and sized, however the specific +rules governing their layout vary between architectures. The +.Nm memcontrol +program does not attempt to enforce these rules, however the system will +reject any attempt to set an illegal combination. +.Bl -tag -width clear +.It Ar list +List range slots. +.Bl -tag -width xxxxxx +.It Op Fl a +List all range slots, even those that are inactive +.El +.It Ar set +Set memory range attributes. +.Bl -tag -width xxxxxx +.It Fl b Ar base +Memory range base address +.It Fl l Ar length +Length of memory range in bytes, power of 2 +.It Fl o Ar owner +Text identifier for this setting (7 char max) +.It Ar attribute +Attributes applied to this range; one of +.Ar uncacheable , +.Ar write-combine , +.Ar write-through , +.Ar write-back , +.Ar write-protect +.El +.It Ar clear +Clear memory range attributes. Ranges may be cleared by owner or by +base/length combination. +.Pp +To clear based on ownership: +.Bl -tag -width xxxxxx +.It Fl o Ar owner +All ranges with this owner will be cleared +.El +.Pp +To clear based on the base/length combination: +.Bl -tag -width xxxxxx +.It Fl b Ar base +Memory range base address +.It Fl l Ar length +Length of memory range in bytes, power of 2 +.El +.Pp +Base and length must exactly match an existing range. +.El +.Sh SEE ALSO +.Xr ioctl 2 , +.Xr mem 4 |