Lines Matching refs:wo
958 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
960 return wo->wo_type == PIDTYPE_MAX || in eligible_pid()
961 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
965 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
967 if (!eligible_pid(wo, p)) in eligible_child()
974 if (ptrace || (wo->wo_flags & __WALL)) in eligible_child()
985 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
997 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
1004 if (!likely(wo->wo_flags & WEXITED)) in wait_task_zombie()
1007 if (unlikely(wo->wo_flags & WNOWAIT)) { in wait_task_zombie()
1012 if (wo->wo_rusage) in wait_task_zombie()
1013 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1088 if (wo->wo_rusage) in wait_task_zombie()
1089 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1092 wo->wo_stat = status; in wait_task_zombie()
1110 infop = wo->wo_info; in wait_task_zombie()
1156 static int wait_task_stopped(struct wait_opts *wo, in wait_task_stopped() argument
1167 if (!ptrace && !(wo->wo_flags & WUNTRACED)) in wait_task_stopped()
1184 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_stopped()
1205 if (wo->wo_rusage) in wait_task_stopped()
1206 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_stopped()
1209 if (likely(!(wo->wo_flags & WNOWAIT))) in wait_task_stopped()
1210 wo->wo_stat = (exit_code << 8) | 0x7f; in wait_task_stopped()
1212 infop = wo->wo_info; in wait_task_stopped()
1228 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1234 if (!unlikely(wo->wo_flags & WCONTINUED)) in wait_task_continued()
1246 if (!unlikely(wo->wo_flags & WNOWAIT)) in wait_task_continued()
1255 if (wo->wo_rusage) in wait_task_continued()
1256 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_continued()
1259 infop = wo->wo_info; in wait_task_continued()
1261 wo->wo_stat = 0xffff; in wait_task_continued()
1280 static int wait_consider_task(struct wait_opts *wo, int ptrace, in wait_consider_task() argument
1294 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1304 wo->notask_error = 0; in wait_consider_task()
1334 return wait_task_zombie(wo, p); in wait_consider_task()
1357 if (likely(!ptrace) || (wo->wo_flags & (WCONTINUED | WEXITED))) in wait_consider_task()
1358 wo->notask_error = 0; in wait_consider_task()
1364 wo->notask_error = 0; in wait_consider_task()
1371 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1380 return wait_task_continued(wo, p); in wait_consider_task()
1392 static int do_wait_thread(struct wait_opts *wo, struct task_struct *tsk) in do_wait_thread() argument
1397 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1406 static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk) in ptrace_do_wait() argument
1411 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1423 struct wait_opts *wo = container_of(wait, struct wait_opts, in child_wait_callback() local
1427 if (!eligible_pid(wo, p)) in child_wait_callback()
1430 if ((wo->wo_flags & __WNOTHREAD) && wait->private != p->parent) in child_wait_callback()
1442 static bool is_effectively_child(struct wait_opts *wo, bool ptrace, in is_effectively_child() argument
1448 return current == parent || (!(wo->wo_flags & __WNOTHREAD) && in is_effectively_child()
1456 static int do_wait_pid(struct wait_opts *wo) in do_wait_pid() argument
1463 target = pid_task(wo->wo_pid, PIDTYPE_TGID); in do_wait_pid()
1464 if (target && is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1465 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1471 target = pid_task(wo->wo_pid, PIDTYPE_PID); in do_wait_pid()
1473 is_effectively_child(wo, ptrace, target)) { in do_wait_pid()
1474 retval = wait_consider_task(wo, ptrace, target); in do_wait_pid()
1482 static long do_wait(struct wait_opts *wo) in do_wait() argument
1486 trace_sched_process_wait(wo->wo_pid); in do_wait()
1488 init_waitqueue_func_entry(&wo->child_wait, child_wait_callback); in do_wait()
1489 wo->child_wait.private = current; in do_wait()
1490 add_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1498 wo->notask_error = -ECHILD; in do_wait()
1499 if ((wo->wo_type < PIDTYPE_MAX) && in do_wait()
1500 (!wo->wo_pid || !pid_has_task(wo->wo_pid, wo->wo_type))) in do_wait()
1506 if (wo->wo_type == PIDTYPE_PID) { in do_wait()
1507 retval = do_wait_pid(wo); in do_wait()
1514 retval = do_wait_thread(wo, tsk); in do_wait()
1518 retval = ptrace_do_wait(wo, tsk); in do_wait()
1522 if (wo->wo_flags & __WNOTHREAD) in do_wait()
1529 retval = wo->notask_error; in do_wait()
1530 if (!retval && !(wo->wo_flags & WNOHANG)) { in do_wait()
1539 remove_wait_queue(¤t->signal->wait_chldexit, &wo->child_wait); in do_wait()
1546 struct wait_opts wo; in kernel_waitid() local
1593 wo.wo_type = type; in kernel_waitid()
1594 wo.wo_pid = pid; in kernel_waitid()
1595 wo.wo_flags = options; in kernel_waitid()
1596 wo.wo_info = infop; in kernel_waitid()
1597 wo.wo_rusage = ru; in kernel_waitid()
1599 wo.wo_flags |= WNOHANG; in kernel_waitid()
1601 ret = do_wait(&wo); in kernel_waitid()
1645 struct wait_opts wo; in kernel_wait4() local
1671 wo.wo_type = type; in kernel_wait4()
1672 wo.wo_pid = pid; in kernel_wait4()
1673 wo.wo_flags = options | WEXITED; in kernel_wait4()
1674 wo.wo_info = NULL; in kernel_wait4()
1675 wo.wo_stat = 0; in kernel_wait4()
1676 wo.wo_rusage = ru; in kernel_wait4()
1677 ret = do_wait(&wo); in kernel_wait4()
1679 if (ret > 0 && stat_addr && put_user(wo.wo_stat, stat_addr)) in kernel_wait4()
1687 struct wait_opts wo = { in kernel_wait() local
1694 ret = do_wait(&wo); in kernel_wait()
1695 if (ret > 0 && wo.wo_stat) in kernel_wait()
1696 *stat = wo.wo_stat; in kernel_wait()
1697 put_pid(wo.wo_pid); in kernel_wait()