Lines Matching refs:wo
1055 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
1057 return wo->wo_type == PIDTYPE_MAX || in eligible_pid()
1058 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
1062 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
1064 if (!eligible_pid(wo, p)) in eligible_child()
1071 if (ptrace || (wo->wo_flags & __WALL)) in eligible_child()
1082 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
1094 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
1101 if (!likely(wo->wo_flags & WEXITED)) in wait_task_zombie()
1104 if (unlikely(wo->wo_flags & WNOWAIT)) { in wait_task_zombie()
1110 if (wo->wo_rusage) in wait_task_zombie()
1111 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1186 if (wo->wo_rusage) in wait_task_zombie()
1187 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1190 wo->wo_stat = status; in wait_task_zombie()
1208 infop = wo->wo_info; in wait_task_zombie()
1254 static int wait_task_stopped(struct wait_opts *wo, in wait_task_stopped() argument
1265 if (!ptrace && !(wo->wo_flags & WUNTRACED)) in wait_task_stopped()
1282 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_stopped()
1303 if (wo->wo_rusage) in wait_task_stopped()
1304 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_stopped()
1307 if (likely(!(wo->wo_flags & WNOWAIT))) in wait_task_stopped()
1308 wo->wo_stat = (exit_code << 8) | 0x7f; in wait_task_stopped()
1310 infop = wo->wo_info; in wait_task_stopped()
1326 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1332 if (!unlikely(wo->wo_flags & WCONTINUED)) in wait_task_continued()
1344 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_continued()
1353 if (wo->wo_rusage) in wait_task_continued()
1354 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_continued()
1357 infop = wo->wo_info; in wait_task_continued()
1359 wo->wo_stat = 0xffff; in wait_task_continued()
1378 static int wait_consider_task(struct wait_opts *wo, int ptrace, in wait_consider_task() argument
1392 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1402 wo->notask_error = 0; in wait_consider_task()
1432 return wait_task_zombie(wo, p); in wait_consider_task()
1455 if (likely(!ptrace) || (wo->wo_flags & (WCONTINUED | WEXITED))) in wait_consider_task()
1456 wo->notask_error = 0; in wait_consider_task()
1462 wo->notask_error = 0; in wait_consider_task()
1469 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1478 return wait_task_continued(wo, p); in wait_consider_task()
1490 static int do_wait_thread(struct wait_opts *wo, struct task_struct *tsk) in do_wait_thread() argument
1495 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1504 static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk) in ptrace_do_wait() argument
1509 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1521 struct wait_opts *wo = container_of(wait, struct wait_opts, in child_wait_callback() local
1525 if (!eligible_pid(wo, p)) in child_wait_callback()
1528 if ((wo->wo_flags & __WNOTHREAD) && wait->private != p->parent) in child_wait_callback()
1540 static bool is_effectively_child(struct wait_opts *wo, bool ptrace, in is_effectively_child() argument
1546 return current == parent || (!(wo->wo_flags & __WNOTHREAD) && in is_effectively_child()
1554 static int do_wait_pid(struct wait_opts *wo) in do_wait_pid() argument
1561 target = pid_task(wo->wo_pid, PIDTYPE_TGID); in do_wait_pid()
1562 if (target && is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1563 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1569 target = pid_task(wo->wo_pid, PIDTYPE_PID); in do_wait_pid()
1571 is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1572 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1580 static long do_wait(struct wait_opts *wo) in do_wait() argument
1584 trace_sched_process_wait(wo->wo_pid); in do_wait()
1586 init_waitqueue_func_entry(&wo->child_wait, child_wait_callback); in do_wait()
1587 wo->child_wait.private = current; in do_wait()
1588 add_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1596 wo->notask_error = -ECHILD; in do_wait()
1597 if ((wo->wo_type < PIDTYPE_MAX) && in do_wait()
1598 (!wo->wo_pid || !pid_has_task(wo->wo_pid, wo->wo_type))) in do_wait()
1604 if (wo->wo_type == PIDTYPE_PID) { in do_wait()
1605 retval = do_wait_pid(wo); in do_wait()
1612 retval = do_wait_thread(wo, tsk); in do_wait()
1616 retval = ptrace_do_wait(wo, tsk); in do_wait()
1620 if (wo->wo_flags & __WNOTHREAD) in do_wait()
1627 retval = wo->notask_error; in do_wait()
1628 if (!retval && !(wo->wo_flags & WNOHANG)) { in do_wait()
1637 remove_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1644 struct wait_opts wo; in kernel_waitid() local
1691 wo.wo_type = type; in kernel_waitid()
1692 wo.wo_pid = pid; in kernel_waitid()
1693 wo.wo_flags = options; in kernel_waitid()
1694 wo.wo_info = infop; in kernel_waitid()
1695 wo.wo_rusage = ru; in kernel_waitid()
1697 wo.wo_flags |= WNOHANG; in kernel_waitid()
1699 ret = do_wait(&wo); in kernel_waitid()
1743 struct wait_opts wo; in kernel_wait4() local
1769 wo.wo_type = type; in kernel_wait4()
1770 wo.wo_pid = pid; in kernel_wait4()
1771 wo.wo_flags = options | WEXITED; in kernel_wait4()
1772 wo.wo_info = NULL; in kernel_wait4()
1773 wo.wo_stat = 0; in kernel_wait4()
1774 wo.wo_rusage = ru; in kernel_wait4()
1775 ret = do_wait(&wo); in kernel_wait4()
1777 if (ret > 0 && stat_addr && put_user(wo.wo_stat, stat_addr)) in kernel_wait4()
1785 struct wait_opts wo = { in kernel_wait() local
1792 ret = do_wait(&wo); in kernel_wait()
1793 if (ret > 0 && wo.wo_stat) in kernel_wait()
1794 *stat = wo.wo_stat; in kernel_wait()
1795 put_pid(wo.wo_pid); in kernel_wait()