Lines Matching refs:wo
1118 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
1120 return wo->wo_type == PIDTYPE_MAX || in eligible_pid()
1121 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
1125 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
1127 if (!eligible_pid(wo, p)) in eligible_child()
1134 if (ptrace || (wo->wo_flags & __WALL)) in eligible_child()
1145 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
1157 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
1164 if (!likely(wo->wo_flags & WEXITED)) in wait_task_zombie()
1167 if (unlikely(wo->wo_flags & WNOWAIT)) { in wait_task_zombie()
1173 if (wo->wo_rusage) in wait_task_zombie()
1174 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1245 if (wo->wo_rusage) in wait_task_zombie()
1246 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1249 wo->wo_stat = status; in wait_task_zombie()
1267 infop = wo->wo_info; in wait_task_zombie()
1313 static int wait_task_stopped(struct wait_opts *wo, in wait_task_stopped() argument
1324 if (!ptrace && !(wo->wo_flags & WUNTRACED)) in wait_task_stopped()
1341 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_stopped()
1362 if (wo->wo_rusage) in wait_task_stopped()
1363 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_stopped()
1366 if (likely(!(wo->wo_flags & WNOWAIT))) in wait_task_stopped()
1367 wo->wo_stat = (exit_code << 8) | 0x7f; in wait_task_stopped()
1369 infop = wo->wo_info; in wait_task_stopped()
1385 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1391 if (!unlikely(wo->wo_flags & WCONTINUED)) in wait_task_continued()
1403 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_continued()
1412 if (wo->wo_rusage) in wait_task_continued()
1413 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_continued()
1416 infop = wo->wo_info; in wait_task_continued()
1418 wo->wo_stat = 0xffff; in wait_task_continued()
1437 static int wait_consider_task(struct wait_opts *wo, int ptrace, in wait_consider_task() argument
1451 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1461 wo->notask_error = 0; in wait_consider_task()
1491 return wait_task_zombie(wo, p); in wait_consider_task()
1514 if (likely(!ptrace) || (wo->wo_flags & (WCONTINUED | WEXITED))) in wait_consider_task()
1515 wo->notask_error = 0; in wait_consider_task()
1521 wo->notask_error = 0; in wait_consider_task()
1528 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1537 return wait_task_continued(wo, p); in wait_consider_task()
1549 static int do_wait_thread(struct wait_opts *wo, struct task_struct *tsk) in do_wait_thread() argument
1554 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1563 static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk) in ptrace_do_wait() argument
1568 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1577 bool pid_child_should_wake(struct wait_opts *wo, struct task_struct *p) in pid_child_should_wake() argument
1579 if (!eligible_pid(wo, p)) in pid_child_should_wake()
1582 if ((wo->wo_flags & __WNOTHREAD) && wo->child_wait.private != p->parent) in pid_child_should_wake()
1591 struct wait_opts *wo = container_of(wait, struct wait_opts, in child_wait_callback() local
1595 if (pid_child_should_wake(wo, p)) in child_wait_callback()
1607 static bool is_effectively_child(struct wait_opts *wo, bool ptrace, in is_effectively_child() argument
1613 return current == parent || (!(wo->wo_flags & __WNOTHREAD) && in is_effectively_child()
1621 static int do_wait_pid(struct wait_opts *wo) in do_wait_pid() argument
1628 target = pid_task(wo->wo_pid, PIDTYPE_TGID); in do_wait_pid()
1629 if (target && is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1630 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1636 target = pid_task(wo->wo_pid, PIDTYPE_PID); in do_wait_pid()
1638 is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1639 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1647 long __do_wait(struct wait_opts *wo) in __do_wait() argument
1657 wo->notask_error = -ECHILD; in __do_wait()
1658 if ((wo->wo_type < PIDTYPE_MAX) && in __do_wait()
1659 (!wo->wo_pid || !pid_has_task(wo->wo_pid, wo->wo_type))) in __do_wait()
1664 if (wo->wo_type == PIDTYPE_PID) { in __do_wait()
1665 retval = do_wait_pid(wo); in __do_wait()
1672 retval = do_wait_thread(wo, tsk); in __do_wait()
1676 retval = ptrace_do_wait(wo, tsk); in __do_wait()
1680 if (wo->wo_flags & __WNOTHREAD) in __do_wait()
1687 retval = wo->notask_error; in __do_wait()
1688 if (!retval && !(wo->wo_flags & WNOHANG)) in __do_wait()
1694 static long do_wait(struct wait_opts *wo) in do_wait() argument
1698 trace_sched_process_wait(wo->wo_pid); in do_wait()
1700 init_waitqueue_func_entry(&wo->child_wait, child_wait_callback); in do_wait()
1701 wo->child_wait.private = current; in do_wait()
1702 add_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1706 retval = __do_wait(wo); in do_wait()
1715 remove_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1719 int kernel_waitid_prepare(struct wait_opts *wo, int which, pid_t upid, in kernel_waitid_prepare() argument
1768 wo->wo_type = type; in kernel_waitid_prepare()
1769 wo->wo_pid = pid; in kernel_waitid_prepare()
1770 wo->wo_flags = options; in kernel_waitid_prepare()
1771 wo->wo_info = infop; in kernel_waitid_prepare()
1772 wo->wo_rusage = ru; in kernel_waitid_prepare()
1774 wo->wo_flags |= WNOHANG; in kernel_waitid_prepare()
1782 struct wait_opts wo; in kernel_waitid() local
1785 ret = kernel_waitid_prepare(&wo, which, upid, infop, options, ru); in kernel_waitid()
1789 ret = do_wait(&wo); in kernel_waitid()
1790 if (!ret && !(options & WNOHANG) && (wo.wo_flags & WNOHANG)) in kernel_waitid()
1793 put_pid(wo.wo_pid); in kernel_waitid()
1833 struct wait_opts wo; in kernel_wait4() local
1859 wo.wo_type = type; in kernel_wait4()
1860 wo.wo_pid = pid; in kernel_wait4()
1861 wo.wo_flags = options | WEXITED; in kernel_wait4()
1862 wo.wo_info = NULL; in kernel_wait4()
1863 wo.wo_stat = 0; in kernel_wait4()
1864 wo.wo_rusage = ru; in kernel_wait4()
1865 ret = do_wait(&wo); in kernel_wait4()
1867 if (ret > 0 && stat_addr && put_user(wo.wo_stat, stat_addr)) in kernel_wait4()
1875 struct wait_opts wo = { in kernel_wait() local
1882 ret = do_wait(&wo); in kernel_wait()
1883 if (ret > 0 && wo.wo_stat) in kernel_wait()
1884 *stat = wo.wo_stat; in kernel_wait()
1885 put_pid(wo.wo_pid); in kernel_wait()