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Add a comment block describes what the intent of safepri global variable 

as "During autoconfiguration or after a panic, a sleep will simply ..."
This commit is contained in:
nisimura 2000-04-12 04:40:50 +00:00
parent cce3288e2f
commit e7206926ef
1 changed files with 11 additions and 2 deletions
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13
sys/arch/pmax/pmax/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.170 2000/04/12 03:05:08 nisimura Exp $ */
/* $NetBSD: machdep.c,v 1.171 2000/04/12 04:40:50 nisimura Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -43,7 +43,7 @@
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.170 2000/04/12 03:05:08 nisimura Exp $");
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.171 2000/04/12 04:40:50 nisimura Exp $");
#include "fs_mfs.h"
#include "opt_ddb.h"
@ -102,6 +102,15 @@ int physmem_boardmax; /* {model,SIMM}-specific bound on physmem */
int mem_cluster_cnt;
phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
/*
* During autoconfiguration or after a panic, a sleep will simply
* lower the priority briefly to allow interrupts, then return.
* The priority to be used (safepri) is machine-dependent, thus this
* value is initialized and maintained in the machine-dependent layers.
* This priority will typically be 0, or the lowest priority
* that is safe for use on the interrupt stack; it can be made
* higher to block network software interrupts after panics.
*/
/*
* safepri is a safe priority for sleep to set for a spin-wait
* during autoconfiguration or after a panic.