Lines Matching refs:wo
1060 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
1062 return wo->wo_type == PIDTYPE_MAX || in eligible_pid()
1063 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
1067 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
1069 if (!eligible_pid(wo, p)) in eligible_child()
1076 if (ptrace || (wo->wo_flags & __WALL)) in eligible_child()
1087 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
1099 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
1106 if (!likely(wo->wo_flags & WEXITED)) in wait_task_zombie()
1109 if (unlikely(wo->wo_flags & WNOWAIT)) { in wait_task_zombie()
1115 if (wo->wo_rusage) in wait_task_zombie()
1116 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1191 if (wo->wo_rusage) in wait_task_zombie()
1192 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1195 wo->wo_stat = status; in wait_task_zombie()
1213 infop = wo->wo_info; in wait_task_zombie()
1259 static int wait_task_stopped(struct wait_opts *wo, in wait_task_stopped() argument
1270 if (!ptrace && !(wo->wo_flags & WUNTRACED)) in wait_task_stopped()
1287 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_stopped()
1308 if (wo->wo_rusage) in wait_task_stopped()
1309 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_stopped()
1312 if (likely(!(wo->wo_flags & WNOWAIT))) in wait_task_stopped()
1313 wo->wo_stat = (exit_code << 8) | 0x7f; in wait_task_stopped()
1315 infop = wo->wo_info; in wait_task_stopped()
1331 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1337 if (!unlikely(wo->wo_flags & WCONTINUED)) in wait_task_continued()
1349 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_continued()
1358 if (wo->wo_rusage) in wait_task_continued()
1359 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_continued()
1362 infop = wo->wo_info; in wait_task_continued()
1364 wo->wo_stat = 0xffff; in wait_task_continued()
1383 static int wait_consider_task(struct wait_opts *wo, int ptrace, in wait_consider_task() argument
1397 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1407 wo->notask_error = 0; in wait_consider_task()
1437 return wait_task_zombie(wo, p); in wait_consider_task()
1460 if (likely(!ptrace) || (wo->wo_flags & (WCONTINUED | WEXITED))) in wait_consider_task()
1461 wo->notask_error = 0; in wait_consider_task()
1467 wo->notask_error = 0; in wait_consider_task()
1474 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1483 return wait_task_continued(wo, p); in wait_consider_task()
1495 static int do_wait_thread(struct wait_opts *wo, struct task_struct *tsk) in do_wait_thread() argument
1500 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1509 static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk) in ptrace_do_wait() argument
1514 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1526 struct wait_opts *wo = container_of(wait, struct wait_opts, in child_wait_callback() local
1530 if (!eligible_pid(wo, p)) in child_wait_callback()
1533 if ((wo->wo_flags & __WNOTHREAD) && wait->private != p->parent) in child_wait_callback()
1545 static bool is_effectively_child(struct wait_opts *wo, bool ptrace, in is_effectively_child() argument
1551 return current == parent || (!(wo->wo_flags & __WNOTHREAD) && in is_effectively_child()
1559 static int do_wait_pid(struct wait_opts *wo) in do_wait_pid() argument
1566 target = pid_task(wo->wo_pid, PIDTYPE_TGID); in do_wait_pid()
1567 if (target && is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1568 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1574 target = pid_task(wo->wo_pid, PIDTYPE_PID); in do_wait_pid()
1576 is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1577 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1585 static long do_wait(struct wait_opts *wo) in do_wait() argument
1589 trace_sched_process_wait(wo->wo_pid); in do_wait()
1591 init_waitqueue_func_entry(&wo->child_wait, child_wait_callback); in do_wait()
1592 wo->child_wait.private = current; in do_wait()
1593 add_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1601 wo->notask_error = -ECHILD; in do_wait()
1602 if ((wo->wo_type < PIDTYPE_MAX) && in do_wait()
1603 (!wo->wo_pid || !pid_has_task(wo->wo_pid, wo->wo_type))) in do_wait()
1609 if (wo->wo_type == PIDTYPE_PID) { in do_wait()
1610 retval = do_wait_pid(wo); in do_wait()
1617 retval = do_wait_thread(wo, tsk); in do_wait()
1621 retval = ptrace_do_wait(wo, tsk); in do_wait()
1625 if (wo->wo_flags & __WNOTHREAD) in do_wait()
1632 retval = wo->notask_error; in do_wait()
1633 if (!retval && !(wo->wo_flags & WNOHANG)) { in do_wait()
1642 remove_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1649 struct wait_opts wo; in kernel_waitid() local
1696 wo.wo_type = type; in kernel_waitid()
1697 wo.wo_pid = pid; in kernel_waitid()
1698 wo.wo_flags = options; in kernel_waitid()
1699 wo.wo_info = infop; in kernel_waitid()
1700 wo.wo_rusage = ru; in kernel_waitid()
1702 wo.wo_flags |= WNOHANG; in kernel_waitid()
1704 ret = do_wait(&wo); in kernel_waitid()
1748 struct wait_opts wo; in kernel_wait4() local
1774 wo.wo_type = type; in kernel_wait4()
1775 wo.wo_pid = pid; in kernel_wait4()
1776 wo.wo_flags = options | WEXITED; in kernel_wait4()
1777 wo.wo_info = NULL; in kernel_wait4()
1778 wo.wo_stat = 0; in kernel_wait4()
1779 wo.wo_rusage = ru; in kernel_wait4()
1780 ret = do_wait(&wo); in kernel_wait4()
1782 if (ret > 0 && stat_addr && put_user(wo.wo_stat, stat_addr)) in kernel_wait4()
1790 struct wait_opts wo = { in kernel_wait() local
1797 ret = do_wait(&wo); in kernel_wait()
1798 if (ret > 0 && wo.wo_stat) in kernel_wait()
1799 *stat = wo.wo_stat; in kernel_wait()
1800 put_pid(wo.wo_pid); in kernel_wait()