Module Name: src
Committed By: oster
Date: Sun Sep 10 00:15:52 UTC 2023
Modified Files:
src/sys/arch/vax/include: cpu.h
Log Message:
With the overhaul of the scheduler code the semantics of
ci_want_resched have changed, and for some reason vax
still requires ci_want_resched set to 1 in order to do
preemption. This commit contains a workaround for the
preemption issued discussed in PR#55415.
XXX pullup-10
To generate a diff of this commit:
cvs rdiff -u -r1.106 -r1.107 src/sys/arch/vax/include/cpu.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/vax/include/cpu.h
diff -u src/sys/arch/vax/include/cpu.h:1.106 src/sys/arch/vax/include/cpu.h:1.107
--- src/sys/arch/vax/include/cpu.h:1.106 Sun Dec 11 18:02:40 2022
+++ src/sys/arch/vax/include/cpu.h Sun Sep 10 00:15:52 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.h,v 1.106 2022/12/11 18:02:40 oster Exp $ */
+/* $NetBSD: cpu.h,v 1.107 2023/09/10 00:15:52 oster Exp $ */
/*
* Copyright (c) 1994 Ludd, University of Lule}, Sweden
@@ -156,10 +156,15 @@ extern int cpu_printfataltraps;
#define curcpu() (curlwp->l_cpu + 0)
#define curlwp ((struct lwp *)mfpr(PR_SSP))
#define cpu_number() (curcpu()->ci_cpuid)
+/* XXX RESCHED_REMOTE isn't the right flag name to be used here,
+but we need to set ci_want_resched to '1' to make things work
+on vax. See PR#55415 */
#define cpu_need_resched(ci, l, flags) \
do { \
struct pcb *pcb = lwp_getpcb(curlwp); \
__USE(flags); \
+ /* XXX RESCHED_REMOTE isn't the right flag */ \
+ (ci)->ci_want_resched = RESCHED_REMOTE; \
pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \
mtpr(AST_OK,PR_ASTLVL); \
} while (/*CONSTCOND*/ 0)
