Lines Matching refs:p
121 static void __unhash_process(struct task_struct *p, bool group_dead) in __unhash_process() argument
124 detach_pid(p, PIDTYPE_PID); in __unhash_process()
126 detach_pid(p, PIDTYPE_TGID); in __unhash_process()
127 detach_pid(p, PIDTYPE_PGID); in __unhash_process()
128 detach_pid(p, PIDTYPE_SID); in __unhash_process()
130 list_del_rcu(&p->tasks); in __unhash_process()
131 list_del_init(&p->sibling); in __unhash_process()
134 list_del_rcu(&p->thread_group); in __unhash_process()
135 list_del_rcu(&p->thread_node); in __unhash_process()
231 void release_task(struct task_struct *p) in release_task() argument
240 dec_rlimit_ucounts(task_ucounts(p), UCOUNT_RLIMIT_NPROC, 1); in release_task()
243 cgroup_release(p); in release_task()
246 ptrace_release_task(p); in release_task()
247 thread_pid = get_pid(p->thread_pid); in release_task()
248 __exit_signal(p); in release_task()
256 leader = p->group_leader; in release_task()
257 if (leader != p && thread_group_empty(leader) in release_task()
270 seccomp_filter_release(p); in release_task()
273 release_thread(p); in release_task()
274 put_task_struct_rcu_user(p); in release_task()
276 p = leader; in release_task()
321 struct task_struct *p; in will_become_orphaned_pgrp() local
323 do_each_pid_task(pgrp, PIDTYPE_PGID, p) { in will_become_orphaned_pgrp()
324 if ((p == ignored_task) || in will_become_orphaned_pgrp()
325 (p->exit_state && thread_group_empty(p)) || in will_become_orphaned_pgrp()
326 is_global_init(p->real_parent)) in will_become_orphaned_pgrp()
329 if (task_pgrp(p->real_parent) != pgrp && in will_become_orphaned_pgrp()
330 task_session(p->real_parent) == task_session(p)) in will_become_orphaned_pgrp()
332 } while_each_pid_task(pgrp, PIDTYPE_PGID, p); in will_become_orphaned_pgrp()
350 struct task_struct *p; in has_stopped_jobs() local
352 do_each_pid_task(pgrp, PIDTYPE_PGID, p) { in has_stopped_jobs()
353 if (p->signal->flags & SIGNAL_STOP_STOPPED) in has_stopped_jobs()
355 } while_each_pid_task(pgrp, PIDTYPE_PGID, p); in has_stopped_jobs()
397 struct task_struct *c, *g, *p = current; in mm_update_next_owner() local
404 if (mm->owner != p) in mm_update_next_owner()
420 list_for_each_entry(c, &p->children, sibling) { in mm_update_next_owner()
428 list_for_each_entry(c, &p->real_parent->children, sibling) { in mm_update_next_owner()
456 BUG_ON(c == p); in mm_update_next_owner()
557 static struct task_struct *find_alive_thread(struct task_struct *p) in find_alive_thread() argument
561 for_each_thread(p, t) { in find_alive_thread()
575 struct task_struct *p, *n; in find_child_reaper() local
588 list_for_each_entry_safe(p, n, dead, ptrace_entry) { in find_child_reaper()
589 list_del_init(&p->ptrace_entry); in find_child_reaper()
590 release_task(p); in find_child_reaper()
644 static void reparent_leader(struct task_struct *father, struct task_struct *p, in reparent_leader() argument
647 if (unlikely(p->exit_state == EXIT_DEAD)) in reparent_leader()
651 p->exit_signal = SIGCHLD; in reparent_leader()
654 if (!p->ptrace && in reparent_leader()
655 p->exit_state == EXIT_ZOMBIE && thread_group_empty(p)) { in reparent_leader()
656 if (do_notify_parent(p, p->exit_signal)) { in reparent_leader()
657 p->exit_state = EXIT_DEAD; in reparent_leader()
658 list_add(&p->ptrace_entry, dead); in reparent_leader()
662 kill_orphaned_pgrp(p, father); in reparent_leader()
676 struct task_struct *p, *t, *reaper; in forget_original_parent() local
687 list_for_each_entry(p, &father->children, sibling) { in forget_original_parent()
688 for_each_thread(p, t) { in forget_original_parent()
703 reparent_leader(father, p, dead); in forget_original_parent()
715 struct task_struct *p, *n; in exit_notify() local
748 list_for_each_entry_safe(p, n, &dead, ptrace_entry) { in exit_notify()
749 list_del_init(&p->ptrace_entry); in exit_notify()
750 release_task(p); in exit_notify()
1036 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
1039 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
1043 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
1045 if (!eligible_pid(wo, p)) in eligible_child()
1063 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
1075 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
1078 pid_t pid = task_pid_vnr(p); in wait_task_zombie()
1079 uid_t uid = from_kuid_munged(current_user_ns(), task_uid(p)); in wait_task_zombie()
1086 status = p->exit_code; in wait_task_zombie()
1087 get_task_struct(p); in wait_task_zombie()
1091 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1092 put_task_struct(p); in wait_task_zombie()
1098 state = (ptrace_reparented(p) && thread_group_leader(p)) ? in wait_task_zombie()
1100 if (cmpxchg(&p->exit_state, EXIT_ZOMBIE, state) != EXIT_ZOMBIE) in wait_task_zombie()
1111 if (state == EXIT_DEAD && thread_group_leader(p)) { in wait_task_zombie()
1112 struct signal_struct *sig = p->signal; in wait_task_zombie()
1137 thread_group_cputime_adjusted(p, &tgutime, &tgstime); in wait_task_zombie()
1142 psig->cgtime += task_gtime(p) + sig->gtime + sig->cgtime; in wait_task_zombie()
1144 p->min_flt + sig->min_flt + sig->cmin_flt; in wait_task_zombie()
1146 p->maj_flt + sig->maj_flt + sig->cmaj_flt; in wait_task_zombie()
1148 p->nvcsw + sig->nvcsw + sig->cnvcsw; in wait_task_zombie()
1150 p->nivcsw + sig->nivcsw + sig->cnivcsw; in wait_task_zombie()
1152 task_io_get_inblock(p) + in wait_task_zombie()
1155 task_io_get_oublock(p) + in wait_task_zombie()
1160 task_io_accounting_add(&psig->ioac, &p->ioac); in wait_task_zombie()
1167 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1168 status = (p->signal->flags & SIGNAL_GROUP_EXIT) in wait_task_zombie()
1169 ? p->signal->group_exit_code : p->exit_code; in wait_task_zombie()
1175 ptrace_unlink(p); in wait_task_zombie()
1179 if (do_notify_parent(p, p->exit_signal)) in wait_task_zombie()
1181 p->exit_state = state; in wait_task_zombie()
1185 release_task(p); in wait_task_zombie()
1204 static int *task_stopped_code(struct task_struct *p, bool ptrace) in task_stopped_code() argument
1207 if (task_is_traced(p) && !(p->jobctl & JOBCTL_LISTENING)) in task_stopped_code()
1208 return &p->exit_code; in task_stopped_code()
1210 if (p->signal->flags & SIGNAL_STOP_STOPPED) in task_stopped_code()
1211 return &p->signal->group_exit_code; in task_stopped_code()
1235 int ptrace, struct task_struct *p) in wait_task_stopped() argument
1248 if (!task_stopped_code(p, ptrace)) in wait_task_stopped()
1252 spin_lock_irq(&p->sighand->siglock); in wait_task_stopped()
1254 p_code = task_stopped_code(p, ptrace); in wait_task_stopped()
1265 uid = from_kuid_munged(current_user_ns(), task_uid(p)); in wait_task_stopped()
1267 spin_unlock_irq(&p->sighand->siglock); in wait_task_stopped()
1278 get_task_struct(p); in wait_task_stopped()
1279 pid = task_pid_vnr(p); in wait_task_stopped()
1284 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_stopped()
1285 put_task_struct(p); in wait_task_stopped()
1306 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1315 if (!(p->signal->flags & SIGNAL_STOP_CONTINUED)) in wait_task_continued()
1318 spin_lock_irq(&p->sighand->siglock); in wait_task_continued()
1320 if (!(p->signal->flags & SIGNAL_STOP_CONTINUED)) { in wait_task_continued()
1321 spin_unlock_irq(&p->sighand->siglock); in wait_task_continued()
1325 p->signal->flags &= ~SIGNAL_STOP_CONTINUED; in wait_task_continued()
1326 uid = from_kuid_munged(current_user_ns(), task_uid(p)); in wait_task_continued()
1327 spin_unlock_irq(&p->sighand->siglock); in wait_task_continued()
1329 pid = task_pid_vnr(p); in wait_task_continued()
1330 get_task_struct(p); in wait_task_continued()
1334 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_continued()
1335 put_task_struct(p); in wait_task_continued()
1359 struct task_struct *p) in wait_consider_task() argument
1366 int exit_state = READ_ONCE(p->exit_state); in wait_consider_task()
1372 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1386 if (likely(!ptrace) && unlikely(p->ptrace)) { in wait_consider_task()
1398 if (!ptrace_reparented(p)) in wait_consider_task()
1405 if (!delay_group_leader(p)) { in wait_consider_task()
1411 if (unlikely(ptrace) || likely(!p->ptrace)) in wait_consider_task()
1412 return wait_task_zombie(wo, p); in wait_consider_task()
1449 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1458 return wait_task_continued(wo, p); in wait_consider_task()
1472 struct task_struct *p; in do_wait_thread() local
1474 list_for_each_entry(p, &tsk->children, sibling) { in do_wait_thread()
1475 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1486 struct task_struct *p; in ptrace_do_wait() local
1488 list_for_each_entry(p, &tsk->ptraced, ptrace_entry) { in ptrace_do_wait()
1489 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1503 struct task_struct *p = key; in child_wait_callback() local
1505 if (!eligible_pid(wo, p)) in child_wait_callback()
1508 if ((wo->wo_flags & __WNOTHREAD) && wait->private != p->parent) in child_wait_callback()
1514 void __wake_up_parent(struct task_struct *p, struct task_struct *parent) in __wake_up_parent() argument
1517 TASK_INTERRUPTIBLE, p); in __wake_up_parent()