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don't grab kernel lock for SYCALL_MPSAFE syscalls.

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This commit is contained in:
yamt 2003-10-26 10:48:08 +00:00
parent ad67de5ad8
commit f16e031e00
1 changed files with 16 additions and 7 deletions
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23
sys/arch/i386/i386/syscall.c
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@ -1,4 +1,4 @@
/* $NetBSD: syscall.c,v 1.24 2003/10/08 00:28:41 thorpej Exp $ */
/* $NetBSD: syscall.c,v 1.25 2003/10/26 10:48:08 yamt Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: syscall.c,v 1.24 2003/10/08 00:28:41 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: syscall.c,v 1.25 2003/10/26 10:48:08 yamt Exp $");
#include "opt_syscall_debug.h"
#include "opt_vm86.h"
@ -152,9 +152,13 @@ syscall_plain(frame)
rval[0] = 0;
rval[1] = 0;
KERNEL_PROC_LOCK(l);
error = (*callp->sy_call)(l, args, rval);
KERNEL_PROC_UNLOCK(l);
if (callp->sy_flags & SYCALL_MPSAFE) {
error = (*callp->sy_call)(l, args, rval);
} else {
KERNEL_PROC_LOCK(l);
error = (*callp->sy_call)(l, args, rval);
KERNEL_PROC_UNLOCK(l);
}
switch (error) {
case 0:
@ -243,8 +247,13 @@ syscall_fancy(frame)
rval[0] = 0;
rval[1] = 0;
error = (*callp->sy_call)(l, args, rval);
KERNEL_PROC_UNLOCK(l);
if (callp->sy_flags & SYCALL_MPSAFE) {
KERNEL_PROC_UNLOCK(l);
error = (*callp->sy_call)(l, args, rval);
} else {
error = (*callp->sy_call)(l, args, rval);
KERNEL_PROC_UNLOCK(l);
}
switch (error) {
case 0:
frame->tf_eax = rval[0];