remove cpu_idle.9. it has not been available on trunk.
This commit is contained in:
yamt
parent
be0ee7c9f3
commit
277af7c2c3
|
|
@ -1,4 +1,4 @@
|
|||
# $NetBSD: Makefile,v 1.230 2007/02/16 17:23:58 hannken Exp $
|
||||
# $NetBSD: Makefile,v 1.231 2007/02/17 14:32:23 yamt Exp $
|
||||
|
||||
# Makefile for section 9 (kernel function and variable) manual pages.
|
||||
|
||||
|
|
@ -7,7 +7,7 @@ MAN= altq.9 arc4random.9 arp.9 audio.9 autoconf.9 \
|
|||
buffercache.9 bufq.9 bus_dma.9 bus_space.9 \
|
||||
callout.9 cardbus.9 cnmagic.9 condvar.9 config.9 cons.9 copy.9 \
|
||||
coredump_write.9 \
|
||||
cpu_configure.9 cpu_coredump.9 cpu_dumpconf.9 cpu_exit.9 cpu_idle.9 \
|
||||
cpu_configure.9 cpu_coredump.9 cpu_dumpconf.9 cpu_exit.9 \
|
||||
cpu_lwp_fork.9 \
|
||||
cpu_initclocks.9 cpu_number.9 cpu_reboot.9 cpu_rootconf.9 \
|
||||
cpu_startup.9 cpu_swapout.9 \
|
||||
|
|
|
|||
|
|
@ -1,96 +0,0 @@
|
|||
.\" $NetBSD: cpu_idle.9,v 1.3 2003/04/16 13:35:26 wiz Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 2002 The NetBSD Foundation, Inc.
|
||||
.\" All rights reserved.
|
||||
.\"
|
||||
.\" This code is derived from software contributed to The NetBSD Foundation
|
||||
.\" by Gregory McGarry.
|
||||
.\"
|
||||
.\" 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.
|
||||
.\" 3. All advertising materials mentioning features or use of this software
|
||||
.\" must display the following acknowledgement:
|
||||
.\" This product includes software developed by the NetBSD
|
||||
.\" Foundation, Inc. and its contributors.
|
||||
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
.\" contributors may be used to endorse or promote products derived
|
||||
.\" from this software without specific prior written permission.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||||
.\"
|
||||
.Dd September 21, 2002
|
||||
.Dt CPU_IDLE 9
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm cpu_idle
|
||||
.Nd idle CPU while waiting for work
|
||||
.Sh SYNOPSIS
|
||||
.In sys/proc.h
|
||||
.Ft void
|
||||
.Fn cpu_idle "void"
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Fn cpu_idle
|
||||
function is invoked to idle the current CPU while waiting for work to be done.
|
||||
It is primarily called by the scheduler if no processes are
|
||||
available on the system run queue.
|
||||
The
|
||||
.Fn cpu_idle
|
||||
function is a machine-dependent implementations in order to permit
|
||||
low-level CPU control.
|
||||
.Pp
|
||||
The
|
||||
.Fn cpu_idle
|
||||
function must be called with the scheduler lock held
|
||||
.P see Xr SCHED_LOCK 9
|
||||
and at the
|
||||
.Xr splsched 9
|
||||
interrupt protection level.
|
||||
It performs the following operations:
|
||||
.Bl -bullet
|
||||
.It
|
||||
Release the scheduler lock.
|
||||
.It
|
||||
Lower the current interrupt priority level to permit interrupts to be
|
||||
taken that will eventually cause processes to appear again on the
|
||||
system run queue.
|
||||
.It
|
||||
Try to zero some pages for the virtual memory system.
|
||||
.It
|
||||
Perform any CPU or system power control.
|
||||
.It
|
||||
Wait until a process appears on the system run queue.
|
||||
.It
|
||||
Acquire the scheduler lock.
|
||||
.El
|
||||
.Pp
|
||||
For CPUs which don't support an idle operation, the CPU must spin
|
||||
until a process appears on the system run queue.
|
||||
Generally, this is done by checking if the
|
||||
.Va sched_whichqs
|
||||
variable in the scheduler is not zero.
|
||||
See
|
||||
.Xr setrunqueue 9
|
||||
for further details.
|
||||
.Sh SEE ALSO
|
||||
.Xr mi_switch 9 ,
|
||||
.Xr scheduler 9 ,
|
||||
.Xr setrunqueue 9 ,
|
||||
.Xr spl 9 ,
|
||||
.Xr uvm 9
|
||||
Loading…
Reference in New Issue