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only lock the kernel around sy_call if !SYCALL_MPSAFE

This commit is contained in:
mrg 2001-03-21 09:01:16 +00:00
parent be5f917514
commit 47e6a41505
1 changed files with 11 additions and 5 deletions
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16
sys/arch/sparc/sparc/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.102 2001/03/18 17:11:22 chs Exp $ */
/* $NetBSD: trap.c,v 1.103 2001/03/21 09:01:16 mrg Exp $ */
/*
* Copyright (c) 1996
@ -106,7 +106,8 @@ int rwindow_debug = 0;
*/
struct fpstate initfpstate = {
{ ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0,
~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0 }
~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0 },
0, 0,
};
/*
@ -410,7 +411,6 @@ badtrap:
if (fs == NULL) {
fs = malloc(sizeof *fs, M_SUBPROC, M_WAITOK);
*fs = initfpstate;
fs->fs_qsize = 0;
p->p_md.md_fpstate = fs;
}
/*
@ -1285,7 +1285,11 @@ syscall(code, tf, pc)
#ifdef SYSCALL_DEBUG
scdebug_call(p, code, args.i);
#endif /* SYSCALL_DEBUG */
KERNEL_PROC_LOCK(p);
/* Lock the kernel if the syscall isn't MP-safe. */
if ((callp->sy_flags & SYCALL_MPSAFE) == 0)
KERNEL_PROC_LOCK(p);
#ifdef KTRACE
if (KTRPOINT(p, KTR_SYSCALL))
ktrsyscall(p, code, callp->sy_argsize, args.i);
@ -1293,7 +1297,9 @@ syscall(code, tf, pc)
rval[0] = 0;
rval[1] = tf->tf_out[1];
error = (*callp->sy_call)(p, &args, rval);
KERNEL_PROC_UNLOCK(p);
if ((callp->sy_flags & SYCALL_MPSAFE) == 0)
KERNEL_PROC_UNLOCK(p);
switch (error) {
case 0: