diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2008-05-02 21:44:47 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2008-05-02 21:44:47 +0000 |
| commit | 74178fc77559c4b0761051dc420b658feaaf10bb (patch) | |
| tree | e3b2673ac1628c723c71672d932b4c3939f1a875 /sys/arch/m88k | |
| parent | a7563e3178c9b52bdfa7a38419d8b35c703a0964 (diff) | |
Grab the biglock unconditionnaly when system calls go through systrace;
spotted by drahn
Diffstat (limited to 'sys/arch/m88k')
| -rw-r--r-- | sys/arch/m88k/m88k/trap.c | 54 |
1 files changed, 31 insertions, 23 deletions
diff --git a/sys/arch/m88k/m88k/trap.c b/sys/arch/m88k/m88k/trap.c index c8a0551bc0a..b8f35945129 100644 --- a/sys/arch/m88k/m88k/trap.c +++ b/sys/arch/m88k/m88k/trap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: trap.c,v 1.62 2008/04/01 21:10:18 miod Exp $ */ +/* $OpenBSD: trap.c,v 1.63 2008/05/02 21:44:46 miod Exp $ */ /* * Copyright (c) 2004, Miodrag Vallat. * Copyright (c) 1998 Steve Murphree, Jr. @@ -1167,31 +1167,37 @@ m88100_syscall(register_t code, struct trapframe *tf) if (error != 0) goto bad; + #ifdef SYSCALL_DEBUG KERNEL_PROC_LOCK(p); scdebug_call(p, code, args); KERNEL_PROC_UNLOCK(p); #endif - nolock = (callp->sy_flags & SY_NOLOCK); - if (!nolock) - KERNEL_PROC_LOCK(p); #ifdef KTRACE if (KTRPOINT(p, KTR_SYSCALL)) { - if (nolock) - KERNEL_PROC_LOCK(p); + KERNEL_PROC_LOCK(p); ktrsyscall(p, code, callp->sy_argsize, args); - if (nolock) - KERNEL_PROC_UNLOCK(p); + KERNEL_PROC_UNLOCK(p); } #endif rval[0] = 0; rval[1] = tf->tf_r[3]; #if NSYSTRACE > 0 - if (ISSET(p->p_flag, P_SYSTRACE)) + if (ISSET(p->p_flag, P_SYSTRACE)) { + KERNEL_PROC_LOCK(p); error = systrace_redirect(code, p, args, rval); - else + KERNEL_PROC_UNLOCK(p); + } else #endif + { + nolock = (callp->sy_flags & SY_NOLOCK); + if (!nolock) + KERNEL_PROC_LOCK(p); error = (*callp->sy_call)(p, args, rval); + if (!nolock) + KERNEL_PROC_UNLOCK(p); + } + /* * system call will look like: * or r13, r0, <code> @@ -1221,8 +1227,6 @@ m88100_syscall(register_t code, struct trapframe *tf) * any pointers. */ - if (!nolock) - KERNEL_PROC_UNLOCK(p); switch (error) { case 0: tf->tf_r[2] = rval[0]; @@ -1327,31 +1331,37 @@ m88110_syscall(register_t code, struct trapframe *tf) if (error != 0) goto bad; + #ifdef SYSCALL_DEBUG KERNEL_PROC_LOCK(p); scdebug_call(p, code, args); KERNEL_PROC_UNLOCK(p); #endif - nolock = (callp->sy_flags & SY_NOLOCK); - if (!nolock) - KERNEL_PROC_LOCK(p); #ifdef KTRACE if (KTRPOINT(p, KTR_SYSCALL)) { - if (nolock) - KERNEL_PROC_LOCK(p); + KERNEL_PROC_LOCK(p); ktrsyscall(p, code, callp->sy_argsize, args); - if (nolock) - KERNEL_PROC_UNLOCK(p); + KERNEL_PROC_UNLOCK(p); } #endif rval[0] = 0; rval[1] = tf->tf_r[3]; #if NSYSTRACE > 0 - if (ISSET(p->p_flag, P_SYSTRACE)) + if (ISSET(p->p_flag, P_SYSTRACE)) { + KERNEL_PROC_LOCK(p); error = systrace_redirect(code, p, args, rval); - else + KERNEL_PROC_UNLOCK(p); + } else #endif + { + nolock = (callp->sy_flags & SY_NOLOCK); + if (!nolock) + KERNEL_PROC_LOCK(p); error = (*callp->sy_call)(p, args, rval); + if (!nolock) + KERNEL_PROC_UNLOCK(p); + } + /* * system call will look like: * or r13, r0, <code> @@ -1377,8 +1387,6 @@ m88110_syscall(register_t code, struct trapframe *tf) * exip += 4 */ - if (!nolock) - KERNEL_PROC_UNLOCK(p); switch (error) { case 0: tf->tf_r[2] = rval[0]; |