diff options
| author |   art <art@openbsd.org> | 2007-03-15 10:22:29 +0000 |
|---|---|---|
| committer | art <art@openbsd.org> | 2007-03-15 10:22:29 +0000 |
| commit | 29514732ed7d204db854b589692b0fd90dc452d0 (patch) | |
| tree | 5e8143a1e45a8ca7a90bc7199927c179bed99d96 /sys/kern/kern_fork.c | |
| parent | regen (diff) | |
| download | wireguard-openbsd-29514732ed7d204db854b589692b0fd90dc452d0.tar.xz wireguard-openbsd-29514732ed7d204db854b589692b0fd90dc452d0.zip | |
Since p_flag is often manipulated in interrupts and without biglock
it's a good idea to use atomic.h operations on it. This mechanic
change updates all bit operations on p_flag to atomic_{set,clear}bits_int.
Only exception is that P_OWEUPC is set by MI code before calling
need_proftick and it's automatically cleared by ADDUPC. There's
no reason for MD handling of that flag since everyone handles it the
same way.
kettenis@ ok
Diffstat (limited to 'sys/kern/kern_fork.c')
| -rw-r--r-- | sys/kern/kern_fork.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index daa1303487a..d19608d9cbc 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_fork.c,v 1.86 2007/01/17 13:51:52 mickey Exp $ */ +/* $OpenBSD: kern_fork.c,v 1.87 2007/03/15 10:22:30 art Exp $ */ /* $NetBSD: kern_fork.c,v 1.29 1996/02/09 18:59:34 christos Exp $ */ /* @@ -238,9 +238,9 @@ fork1(struct proc *p1, int exitsig, int flags, void *stack, size_t stacksize, p2->p_emul = p1->p_emul; if (p1->p_flag & P_PROFIL) startprofclock(p2); - p2->p_flag |= (p1->p_flag & (P_SUGID | P_SUGIDEXEC)); + atomic_setbits_int(&p2->p_flag, p1->p_flag & (P_SUGID | P_SUGIDEXEC)); if (flags & FORK_PTRACE) - p2->p_flag |= (p1->p_flag & P_TRACED); + atomic_setbits_int(&p2->p_flag, p1->p_flag & P_TRACED); p2->p_cred = pool_get(&pcred_pool, PR_WAITOK); bcopy(p1->p_cred, p2->p_cred, sizeof(*p2->p_cred)); p2->p_cred->p_refcnt = 1; @@ -272,17 +272,17 @@ fork1(struct proc *p1, int exitsig, int flags, void *stack, size_t stacksize, } if (p1->p_session->s_ttyvp != NULL && p1->p_flag & P_CONTROLT) - p2->p_flag |= P_CONTROLT; + atomic_setbits_int(&p2->p_flag, P_CONTROLT); if (flags & FORK_PPWAIT) - p2->p_flag |= P_PPWAIT; + atomic_setbits_int(&p2->p_flag, P_PPWAIT); p2->p_pptr = p1; if (flags & FORK_NOZOMBIE) - p2->p_flag |= P_NOZOMBIE; + atomic_setbits_int(&p2->p_flag, P_NOZOMBIE); LIST_INIT(&p2->p_children); #ifdef RTHREADS if (flags & FORK_THREAD) { - p2->p_flag |= P_THREAD; + atomic_setbits_int(&p2->p_flag, P_THREAD); p2->p_thrparent = p1->p_thrparent; } else { p2->p_thrparent = p2; |