diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c | 31 | ||||
| -rw-r--r-- | sys/kern/kern_fork.c | 10 |
2 files changed, 28 insertions, 13 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c b/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c index f07e8ac..1d19be10 100644 --- a/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c +++ b/sys/cddl/contrib/opensolaris/uts/intel/dtrace/fasttrap_isa.c @@ -988,6 +988,9 @@ int fasttrap_pid_probe(struct reg *rp) { proc_t *p = curproc; +#if !defined(sun) + proc_t *pp; +#endif uintptr_t pc = rp->r_rip - 1; uintptr_t new_pc = 0; fasttrap_bucket_t *bucket; @@ -1023,24 +1026,32 @@ fasttrap_pid_probe(struct reg *rp) curthread->t_dtrace_regv = 0; #endif -#if defined(sun) /* * Treat a child created by a call to vfork(2) as if it were its * parent. We know that there's only one thread of control in such a * process: this one. */ +#if defined(sun) while (p->p_flag & SVFORK) { p = p->p_parent; } -#endif - PROC_LOCK(p); - _PHOLD(p); pid = p->p_pid; -#if defined(sun) pid_mtx = &cpu_core[CPU->cpu_id].cpuc_pid_lock; mutex_enter(pid_mtx); +#else + pp = p; + sx_slock(&proctree_lock); + while (pp->p_vmspace == pp->p_pptr->p_vmspace) + pp = pp->p_pptr; + pid = pp->p_pid; + sx_sunlock(&proctree_lock); + pp = NULL; + + PROC_LOCK(p); + _PHOLD(p); #endif + bucket = &fasttrap_tpoints.fth_table[FASTTRAP_TPOINTS_INDEX(pid, pc)]; /* @@ -1060,9 +1071,10 @@ fasttrap_pid_probe(struct reg *rp) if (tp == NULL) { #if defined(sun) mutex_exit(pid_mtx); -#endif +#else _PRELE(p); PROC_UNLOCK(p); +#endif return (-1); } @@ -1184,9 +1196,10 @@ fasttrap_pid_probe(struct reg *rp) * tracepoint again later if we need to light up any return probes. */ tp_local = *tp; - PROC_UNLOCK(p); #if defined(sun) mutex_exit(pid_mtx); +#else + PROC_UNLOCK(p); #endif tp = &tp_local; @@ -1736,7 +1749,7 @@ fasttrap_pid_probe(struct reg *rp) #if defined(sun) if (fasttrap_copyout(scratch, (char *)addr, i)) { #else - if (uwrite(curproc, scratch, i, addr)) { + if (uwrite(p, scratch, i, addr)) { #endif fasttrap_sigtrap(p, curthread, pc); new_pc = pc; @@ -1795,10 +1808,12 @@ done: rp->r_rip = new_pc; +#if !defined(sun) PROC_LOCK(p); proc_write_regs(curthread, rp); _PRELE(p); PROC_UNLOCK(p); +#endif return (0); } diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index 04a7eba..76605f4 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -684,12 +684,12 @@ do_fork(struct thread *td, int flags, struct proc *p2, struct thread *td2, #ifdef KDTRACE_HOOKS /* - * Tell the DTrace fasttrap provider about the new process - * if it has registered an interest. We have to do this only after - * p_state is PRS_NORMAL since the fasttrap module will use pfind() - * later on. + * Tell the DTrace fasttrap provider about the new process so that any + * tracepoints inherited from the parent can be removed. We have to do + * this only after p_state is PRS_NORMAL since the fasttrap module will + * use pfind() later on. */ - if (dtrace_fasttrap_fork) + if ((flags & RFMEM) == 0 && dtrace_fasttrap_fork) dtrace_fasttrap_fork(p1, p2); #endif if ((p1->p_flag & (P_TRACED | P_FOLLOWFORK)) == (P_TRACED | |
