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Don't grab the kernel lock for system timer interrupts; this mostly prevents 

stalls in system time processing.

XXX - deal with non-atomic global time variables updates later.
This commit is contained in:
pk 2003-01-17 10:36:19 +00:00
parent 2ef691da9b
commit 1d67b9c75a
1 changed files with 5 additions and 5 deletions
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10
sys/arch/sparc/sparc/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.182 2003/01/13 15:50:51 mrg Exp $ */
/* $NetBSD: locore.s,v 1.183 2003/01/17 10:36:19 pk Exp $ */
/*
* Copyright (c) 1996 Paul Kranenburg
@ -2474,7 +2474,7 @@ softintr_common:
#if defined(MULTIPROCESSOR)
/* Grab the kernel lock for interrupt levels <= IPL_CLOCK */
cmp %l3, IPL_CLOCK
bgu 3f
bgeu 3f
st %fp, [%sp + CCFSZ + 16]
call _C_LABEL(intr_lock_kernel)
nop
@ -2501,7 +2501,7 @@ softintr_common:
#if defined(MULTIPROCESSOR)
cmp %l3, IPL_CLOCK
bgu 0f
bgeu 0f
nop
call _C_LABEL(intr_unlock_kernel)
nop
@ -2649,7 +2649,7 @@ sparc_interrupt_common:
#if defined(MULTIPROCESSOR)
/* Grab the kernel lock for interrupt levels <= IPL_CLOCK */
cmp %l3, IPL_CLOCK
bgu 3f
bgeu 3f
st %fp, [%sp + CCFSZ + 16]
call _C_LABEL(intr_lock_kernel)
nop
@ -2689,7 +2689,7 @@ sparc_interrupt_common:
4:
#if defined(MULTIPROCESSOR)
cmp %l3, IPL_CLOCK
bgu 0f
bgeu 0f
nop
call _C_LABEL(intr_unlock_kernel)
nop