Lines Matching refs:p
128 static void __unhash_process(struct task_struct *p, bool group_dead) in __unhash_process() argument
131 detach_pid(p, PIDTYPE_PID); in __unhash_process()
133 detach_pid(p, PIDTYPE_TGID); in __unhash_process()
134 detach_pid(p, PIDTYPE_PGID); in __unhash_process()
135 detach_pid(p, PIDTYPE_SID); in __unhash_process()
137 list_del_rcu(&p->tasks); in __unhash_process()
138 list_del_init(&p->sibling); in __unhash_process()
141 list_del_rcu(&p->thread_node); in __unhash_process()
243 void release_task(struct task_struct *p) in release_task() argument
252 dec_rlimit_ucounts(task_ucounts(p), UCOUNT_RLIMIT_NPROC, 1); in release_task()
255 cgroup_release(p); in release_task()
258 ptrace_release_task(p); in release_task()
259 thread_pid = get_pid(p->thread_pid); in release_task()
260 __exit_signal(p); in release_task()
268 leader = p->group_leader; in release_task()
269 if (leader != p && thread_group_empty(leader) in release_task()
284 release_thread(p); in release_task()
285 put_task_struct_rcu_user(p); in release_task()
287 p = leader; in release_task()
332 struct task_struct *p; in will_become_orphaned_pgrp() local
334 do_each_pid_task(pgrp, PIDTYPE_PGID, p) { in will_become_orphaned_pgrp()
335 if ((p == ignored_task) || in will_become_orphaned_pgrp()
336 (p->exit_state && thread_group_empty(p)) || in will_become_orphaned_pgrp()
337 is_global_init(p->real_parent)) in will_become_orphaned_pgrp()
340 if (task_pgrp(p->real_parent) != pgrp && in will_become_orphaned_pgrp()
341 task_session(p->real_parent) == task_session(p)) in will_become_orphaned_pgrp()
343 } while_each_pid_task(pgrp, PIDTYPE_PGID, p); in will_become_orphaned_pgrp()
361 struct task_struct *p; in has_stopped_jobs() local
363 do_each_pid_task(pgrp, PIDTYPE_PGID, p) { in has_stopped_jobs()
364 if (p->signal->flags & SIGNAL_STOP_STOPPED) in has_stopped_jobs()
366 } while_each_pid_task(pgrp, PIDTYPE_PGID, p); in has_stopped_jobs()
481 struct task_struct *g, *p = current; in mm_update_next_owner() local
487 if (mm->owner != p) in mm_update_next_owner()
503 list_for_each_entry(g, &p->children, sibling) { in mm_update_next_owner()
510 list_for_each_entry(g, &p->real_parent->children, sibling) { in mm_update_next_owner()
579 static struct task_struct *find_alive_thread(struct task_struct *p) in find_alive_thread() argument
583 for_each_thread(p, t) { in find_alive_thread()
597 struct task_struct *p, *n; in find_child_reaper() local
610 list_for_each_entry_safe(p, n, dead, ptrace_entry) { in find_child_reaper()
611 list_del_init(&p->ptrace_entry); in find_child_reaper()
612 release_task(p); in find_child_reaper()
666 static void reparent_leader(struct task_struct *father, struct task_struct *p, in reparent_leader() argument
669 if (unlikely(p->exit_state == EXIT_DEAD)) in reparent_leader()
673 p->exit_signal = SIGCHLD; in reparent_leader()
676 if (!p->ptrace && in reparent_leader()
677 p->exit_state == EXIT_ZOMBIE && thread_group_empty(p)) { in reparent_leader()
678 if (do_notify_parent(p, p->exit_signal)) { in reparent_leader()
679 p->exit_state = EXIT_DEAD; in reparent_leader()
680 list_add(&p->ptrace_entry, dead); in reparent_leader()
684 kill_orphaned_pgrp(p, father); in reparent_leader()
698 struct task_struct *p, *t, *reaper; in forget_original_parent() local
709 list_for_each_entry(p, &father->children, sibling) { in forget_original_parent()
710 for_each_thread(p, t) { in forget_original_parent()
725 reparent_leader(father, p, dead); in forget_original_parent()
737 struct task_struct *p, *n; in exit_notify() local
777 list_for_each_entry_safe(p, n, &dead, ptrace_entry) { in exit_notify()
778 list_del_init(&p->ptrace_entry); in exit_notify()
779 release_task(p); in exit_notify()
784 unsigned long stack_not_used(struct task_struct *p) in stack_not_used() argument
786 unsigned long *n = end_of_stack(p); in stack_not_used()
797 return (unsigned long)end_of_stack(p) - (unsigned long)n; in stack_not_used()
799 return (unsigned long)n - (unsigned long)end_of_stack(p); in stack_not_used()
1111 static int eligible_pid(struct wait_opts *wo, struct task_struct *p) in eligible_pid() argument
1114 task_pid_type(p, wo->wo_type) == wo->wo_pid; in eligible_pid()
1118 eligible_child(struct wait_opts *wo, bool ptrace, struct task_struct *p) in eligible_child() argument
1120 if (!eligible_pid(wo, p)) in eligible_child()
1138 if ((p->exit_signal != SIGCHLD) ^ !!(wo->wo_flags & __WCLONE)) in eligible_child()
1150 static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) in wait_task_zombie() argument
1153 pid_t pid = task_pid_vnr(p); in wait_task_zombie()
1154 uid_t uid = from_kuid_munged(current_user_ns(), task_uid(p)); in wait_task_zombie()
1161 status = (p->signal->flags & SIGNAL_GROUP_EXIT) in wait_task_zombie()
1162 ? p->signal->group_exit_code : p->exit_code; in wait_task_zombie()
1163 get_task_struct(p); in wait_task_zombie()
1167 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1168 put_task_struct(p); in wait_task_zombie()
1174 state = (ptrace_reparented(p) && thread_group_leader(p)) ? in wait_task_zombie()
1176 if (cmpxchg(&p->exit_state, EXIT_ZOMBIE, state) != EXIT_ZOMBIE) in wait_task_zombie()
1187 if (state == EXIT_DEAD && thread_group_leader(p)) { in wait_task_zombie()
1188 struct signal_struct *sig = p->signal; in wait_task_zombie()
1211 thread_group_cputime_adjusted(p, &tgutime, &tgstime); in wait_task_zombie()
1215 psig->cgtime += task_gtime(p) + sig->gtime + sig->cgtime; in wait_task_zombie()
1217 p->min_flt + sig->min_flt + sig->cmin_flt; in wait_task_zombie()
1219 p->maj_flt + sig->maj_flt + sig->cmaj_flt; in wait_task_zombie()
1221 p->nvcsw + sig->nvcsw + sig->cnvcsw; in wait_task_zombie()
1223 p->nivcsw + sig->nivcsw + sig->cnivcsw; in wait_task_zombie()
1225 task_io_get_inblock(p) + in wait_task_zombie()
1228 task_io_get_oublock(p) + in wait_task_zombie()
1233 task_io_accounting_add(&psig->ioac, &p->ioac); in wait_task_zombie()
1239 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_zombie()
1240 status = (p->signal->flags & SIGNAL_GROUP_EXIT) in wait_task_zombie()
1241 ? p->signal->group_exit_code : p->exit_code; in wait_task_zombie()
1247 ptrace_unlink(p); in wait_task_zombie()
1251 if (do_notify_parent(p, p->exit_signal)) in wait_task_zombie()
1253 p->exit_state = state; in wait_task_zombie()
1257 release_task(p); in wait_task_zombie()
1276 static int *task_stopped_code(struct task_struct *p, bool ptrace) in task_stopped_code() argument
1279 if (task_is_traced(p) && !(p->jobctl & JOBCTL_LISTENING)) in task_stopped_code()
1280 return &p->exit_code; in task_stopped_code()
1282 if (p->signal->flags & SIGNAL_STOP_STOPPED) in task_stopped_code()
1283 return &p->signal->group_exit_code; in task_stopped_code()
1307 int ptrace, struct task_struct *p) in wait_task_stopped() argument
1320 if (!task_stopped_code(p, ptrace)) in wait_task_stopped()
1324 spin_lock_irq(&p->sighand->siglock); in wait_task_stopped()
1326 p_code = task_stopped_code(p, ptrace); in wait_task_stopped()
1337 uid = from_kuid_munged(current_user_ns(), task_uid(p)); in wait_task_stopped()
1339 spin_unlock_irq(&p->sighand->siglock); in wait_task_stopped()
1350 get_task_struct(p); in wait_task_stopped()
1351 pid = task_pid_vnr(p); in wait_task_stopped()
1356 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_stopped()
1357 put_task_struct(p); in wait_task_stopped()
1378 static int wait_task_continued(struct wait_opts *wo, struct task_struct *p) in wait_task_continued() argument
1387 if (!(p->signal->flags & SIGNAL_STOP_CONTINUED)) in wait_task_continued()
1390 spin_lock_irq(&p->sighand->siglock); in wait_task_continued()
1392 if (!(p->signal->flags & SIGNAL_STOP_CONTINUED)) { in wait_task_continued()
1393 spin_unlock_irq(&p->sighand->siglock); in wait_task_continued()
1397 p->signal->flags &= ~SIGNAL_STOP_CONTINUED; in wait_task_continued()
1398 uid = from_kuid_munged(current_user_ns(), task_uid(p)); in wait_task_continued()
1399 spin_unlock_irq(&p->sighand->siglock); in wait_task_continued()
1401 pid = task_pid_vnr(p); in wait_task_continued()
1402 get_task_struct(p); in wait_task_continued()
1406 getrusage(p, RUSAGE_BOTH, wo->wo_rusage); in wait_task_continued()
1407 put_task_struct(p); in wait_task_continued()
1431 struct task_struct *p) in wait_consider_task() argument
1438 int exit_state = READ_ONCE(p->exit_state); in wait_consider_task()
1444 ret = eligible_child(wo, ptrace, p); in wait_consider_task()
1458 if (likely(!ptrace) && unlikely(p->ptrace)) { in wait_consider_task()
1470 if (!ptrace_reparented(p)) in wait_consider_task()
1477 if (!delay_group_leader(p)) { in wait_consider_task()
1483 if (unlikely(ptrace) || likely(!p->ptrace)) in wait_consider_task()
1484 return wait_task_zombie(wo, p); in wait_consider_task()
1521 ret = wait_task_stopped(wo, ptrace, p); in wait_consider_task()
1530 return wait_task_continued(wo, p); in wait_consider_task()
1544 struct task_struct *p; in do_wait_thread() local
1546 list_for_each_entry(p, &tsk->children, sibling) { in do_wait_thread()
1547 int ret = wait_consider_task(wo, 0, p); in do_wait_thread()
1558 struct task_struct *p; in ptrace_do_wait() local
1560 list_for_each_entry(p, &tsk->ptraced, ptrace_entry) { in ptrace_do_wait()
1561 int ret = wait_consider_task(wo, 1, p); in ptrace_do_wait()
1570 bool pid_child_should_wake(struct wait_opts *wo, struct task_struct *p) in pid_child_should_wake() argument
1572 if (!eligible_pid(wo, p)) in pid_child_should_wake()
1575 if ((wo->wo_flags & __WNOTHREAD) && wo->child_wait.private != p->parent) in pid_child_should_wake()
1586 struct task_struct *p = key; in child_wait_callback() local
1588 if (pid_child_should_wake(wo, p)) in child_wait_callback()
1594 void __wake_up_parent(struct task_struct *p, struct task_struct *parent) in __wake_up_parent() argument
1597 TASK_INTERRUPTIBLE, p); in __wake_up_parent()