Lines Matching refs:wo
911 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
913 return wo->wo_type == PIDTYPE_MAX || in eligible_pid()
914 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
918 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
920 if (!eligible_pid(wo, p)) in eligible_child()
927 if (ptrace || (wo->wo_flags & __WALL)) in eligible_child()
938 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
944 static int wait_noreap_copyout(struct wait_opts *wo, struct task_struct *p, in wait_noreap_copyout() argument
948 int retval = wo->wo_rusage in wait_noreap_copyout()
949 ? getrusage(p, RUSAGE_BOTH, wo->wo_rusage) : 0; in wait_noreap_copyout()
952 infop = wo->wo_info; in wait_noreap_copyout()
978 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
985 if (!likely(wo->wo_flags & WEXITED)) in wait_task_zombie()
988 if (unlikely(wo->wo_flags & WNOWAIT)) { in wait_task_zombie()
1003 return wait_noreap_copyout(wo, p, pid, uid, why, status); in wait_task_zombie()
1076 retval = wo->wo_rusage in wait_task_zombie()
1077 ? getrusage(p, RUSAGE_BOTH, wo->wo_rusage) : 0; in wait_task_zombie()
1080 if (!retval && wo->wo_stat) in wait_task_zombie()
1081 retval = put_user(status, wo->wo_stat); in wait_task_zombie()
1083 infop = wo->wo_info; in wait_task_zombie()
1158 static int wait_task_stopped(struct wait_opts *wo, in wait_task_stopped() argument
1169 if (!ptrace && !(wo->wo_flags & WUNTRACED)) in wait_task_stopped()
1186 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_stopped()
1208 if (unlikely(wo->wo_flags & WNOWAIT)) in wait_task_stopped()
1209 return wait_noreap_copyout(wo, p, pid, uid, why, exit_code); in wait_task_stopped()
1211 retval = wo->wo_rusage in wait_task_stopped()
1212 ? getrusage(p, RUSAGE_BOTH, wo->wo_rusage) : 0; in wait_task_stopped()
1213 if (!retval && wo->wo_stat) in wait_task_stopped()
1214 retval = put_user((exit_code << 8) | 0x7f, wo->wo_stat); in wait_task_stopped()
1216 infop = wo->wo_info; in wait_task_stopped()
1243 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1249 if (!unlikely(wo->wo_flags & WCONTINUED)) in wait_task_continued()
1261 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_continued()
1271 if (!wo->wo_info) { in wait_task_continued()
1272 retval = wo->wo_rusage in wait_task_continued()
1273 ? getrusage(p, RUSAGE_BOTH, wo->wo_rusage) : 0; in wait_task_continued()
1275 if (!retval && wo->wo_stat) in wait_task_continued()
1276 retval = put_user(0xffff, wo->wo_stat); in wait_task_continued()
1280 retval = wait_noreap_copyout(wo, p, pid, uid, in wait_task_continued()
1297 static int wait_consider_task(struct wait_opts *wo, int ptrace, in wait_consider_task() argument
1311 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1324 if (wo->notask_error) in wait_consider_task()
1325 wo->notask_error = ret; in wait_consider_task()
1335 wo->notask_error = 0; in wait_consider_task()
1365 return wait_task_zombie(wo, p); in wait_consider_task()
1388 if (likely(!ptrace) || (wo->wo_flags & (WCONTINUED | WEXITED))) in wait_consider_task()
1389 wo->notask_error = 0; in wait_consider_task()
1395 wo->notask_error = 0; in wait_consider_task()
1402 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1411 return wait_task_continued(wo, p); in wait_consider_task()
1423 static int do_wait_thread(struct wait_opts *wo, struct task_struct *tsk) in do_wait_thread() argument
1428 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1437 static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk) in ptrace_do_wait() argument
1442 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1454 struct wait_opts *wo = container_of(wait, struct wait_opts, in child_wait_callback() local
1458 if (!eligible_pid(wo, p)) in child_wait_callback()
1461 if ((wo->wo_flags & __WNOTHREAD) && wait->private != p->parent) in child_wait_callback()
1473 static long do_wait(struct wait_opts *wo) in do_wait() argument
1478 trace_sched_process_wait(wo->wo_pid); in do_wait()
1480 init_waitqueue_func_entry(&wo->child_wait, child_wait_callback); in do_wait()
1481 wo->child_wait.private = current; in do_wait()
1482 add_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1490 wo->notask_error = -ECHILD; in do_wait()
1491 if ((wo->wo_type < PIDTYPE_MAX) && in do_wait()
1492 (!wo->wo_pid || hlist_empty(&wo->wo_pid->tasks[wo->wo_type]))) in do_wait()
1499 retval = do_wait_thread(wo, tsk); in do_wait()
1503 retval = ptrace_do_wait(wo, tsk); in do_wait()
1507 if (wo->wo_flags & __WNOTHREAD) in do_wait()
1513 retval = wo->notask_error; in do_wait()
1514 if (!retval && !(wo->wo_flags & WNOHANG)) { in do_wait()
1523 remove_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1530 struct wait_opts wo; in SYSCALL_DEFINE5() local
1561 wo.wo_type = type; in SYSCALL_DEFINE5()
1562 wo.wo_pid = pid; in SYSCALL_DEFINE5()
1563 wo.wo_flags = options; in SYSCALL_DEFINE5()
1564 wo.wo_info = infop; in SYSCALL_DEFINE5()
1565 wo.wo_stat = NULL; in SYSCALL_DEFINE5()
1566 wo.wo_rusage = ru; in SYSCALL_DEFINE5()
1567 ret = do_wait(&wo); in SYSCALL_DEFINE5()
1598 struct wait_opts wo; in SYSCALL_DEFINE4() local
1620 wo.wo_type = type; in SYSCALL_DEFINE4()
1621 wo.wo_pid = pid; in SYSCALL_DEFINE4()
1622 wo.wo_flags = options | WEXITED; in SYSCALL_DEFINE4()
1623 wo.wo_info = NULL; in SYSCALL_DEFINE4()
1624 wo.wo_stat = stat_addr; in SYSCALL_DEFINE4()
1625 wo.wo_rusage = ru; in SYSCALL_DEFINE4()
1626 ret = do_wait(&wo); in SYSCALL_DEFINE4()