[src/trunk]: src/sys/arch/alpha/alpha No longer need to play with the kernel_...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/08f9e2b669ed
branches:  trunk
changeset: 508843:08f9e2b669ed
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Fri Apr 20 22:59:38 2001 +0000

description:
No longer need to play with the kernel_lock while waiting
for the other processor to sync FP state.

diffstat:

 sys/arch/alpha/alpha/machdep.c |  21 +++------------------
 1 files changed, 3 insertions(+), 18 deletions(-)

diffs (56 lines):

diff -r 1a9e57409288 -r 08f9e2b669ed sys/arch/alpha/alpha/machdep.c
--- a/sys/arch/alpha/alpha/machdep.c    Fri Apr 20 22:58:39 2001 +0000
+++ b/sys/arch/alpha/alpha/machdep.c    Fri Apr 20 22:59:38 2001 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: machdep.c,v 1.235 2001/04/20 00:10:17 thorpej Exp $ */
+/* $NetBSD: machdep.c,v 1.236 2001/04/20 22:59:38 thorpej Exp $ */
 
 /*-
  * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
@@ -73,7 +73,7 @@
 
 #include <sys/cdefs.h>                 /* RCS ID & Copyright macro defns */
 
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.235 2001/04/20 00:10:17 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.236 2001/04/20 22:59:38 thorpej Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -1834,7 +1834,7 @@
        struct cpu_info *oci;
 #if defined(MULTIPROCESSOR)
        u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU;
-       int s, spincount, hold_count;
+       int s, spincount;
 #endif
 
        KDASSERT(p->p_addr != NULL);
@@ -1860,15 +1860,6 @@
        alpha_send_ipi(oci->ci_cpuid, ipi);
        FPCPU_UNLOCK(&p->p_addr->u_pcb, s);
 
-       /*
-        * If we're holding the kernel lock, release it before
-        * spinning.
-        *
-        * XXX Why do we have to do this?!  We shouldn't need to!
-        */
-       if (p->p_flag & P_BIGLOCK)
-               hold_count = spinlock_release_all(&kernel_lock);
-
        spincount = 0;
        while (p->p_addr->u_pcb.pcb_fpcpu != NULL) {
                spincount++;
@@ -1876,12 +1867,6 @@
                if (spincount > 10000)
                        panic("fpsave ipi didn't");
        }
-
-       /*
-        * ...and reacquire it.
-        */
-       if (p->p_flag & P_BIGLOCK)
-               spinlock_acquire_count(&kernel_lock, hold_count);
 #else
        KASSERT(ci->ci_fpcurproc == p);
        FPCPU_UNLOCK(&p->p_addr->u_pcb, s);