tee: optee: add missing of_node_put after of_device_is_available
[muen/linux.git] / init / init_task.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/init_task.h>
3 #include <linux/export.h>
4 #include <linux/mqueue.h>
5 #include <linux/sched.h>
6 #include <linux/sched/sysctl.h>
7 #include <linux/sched/rt.h>
8 #include <linux/sched/task.h>
9 #include <linux/init.h>
10 #include <linux/fs.h>
11 #include <linux/mm.h>
12 #include <linux/audit.h>
13
14 #include <asm/pgtable.h>
15 #include <linux/uaccess.h>
16
17 static struct signal_struct init_signals = {
18         .nr_threads     = 1,
19         .thread_head    = LIST_HEAD_INIT(init_task.thread_node),
20         .wait_chldexit  = __WAIT_QUEUE_HEAD_INITIALIZER(init_signals.wait_chldexit),
21         .shared_pending = {
22                 .list = LIST_HEAD_INIT(init_signals.shared_pending.list),
23                 .signal =  {{0}}
24         },
25         .multiprocess   = HLIST_HEAD_INIT,
26         .rlim           = INIT_RLIMITS,
27         .cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),
28 #ifdef CONFIG_POSIX_TIMERS
29         .posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),
30         .cputimer       = {
31                 .cputime_atomic = INIT_CPUTIME_ATOMIC,
32                 .running        = false,
33                 .checking_timer = false,
34         },
35 #endif
36         INIT_CPU_TIMERS(init_signals)
37         .pids = {
38                 [PIDTYPE_PID]   = &init_struct_pid,
39                 [PIDTYPE_TGID]  = &init_struct_pid,
40                 [PIDTYPE_PGID]  = &init_struct_pid,
41                 [PIDTYPE_SID]   = &init_struct_pid,
42         },
43         INIT_PREV_CPUTIME(init_signals)
44 };
45
46 static struct sighand_struct init_sighand = {
47         .count          = ATOMIC_INIT(1),
48         .action         = { { { .sa_handler = SIG_DFL, } }, },
49         .siglock        = __SPIN_LOCK_UNLOCKED(init_sighand.siglock),
50         .signalfd_wqh   = __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh),
51 };
52
53 /*
54  * Set up the first task table, touch at your own risk!. Base=0,
55  * limit=0x1fffff (=2MB)
56  */
57 struct task_struct init_task
58 #ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
59         __init_task_data
60 #endif
61 = {
62 #ifdef CONFIG_THREAD_INFO_IN_TASK
63         .thread_info    = INIT_THREAD_INFO(init_task),
64         .stack_refcount = ATOMIC_INIT(1),
65 #endif
66         .state          = 0,
67         .stack          = init_stack,
68         .usage          = ATOMIC_INIT(2),
69         .flags          = PF_KTHREAD,
70         .prio           = MAX_PRIO - 20,
71         .static_prio    = MAX_PRIO - 20,
72         .normal_prio    = MAX_PRIO - 20,
73         .policy         = SCHED_NORMAL,
74         .cpus_allowed   = CPU_MASK_ALL,
75         .nr_cpus_allowed= NR_CPUS,
76         .mm             = NULL,
77         .active_mm      = &init_mm,
78         .restart_block  = {
79                 .fn = do_no_restart_syscall,
80         },
81         .se             = {
82                 .group_node     = LIST_HEAD_INIT(init_task.se.group_node),
83         },
84         .rt             = {
85                 .run_list       = LIST_HEAD_INIT(init_task.rt.run_list),
86                 .time_slice     = RR_TIMESLICE,
87         },
88         .tasks          = LIST_HEAD_INIT(init_task.tasks),
89 #ifdef CONFIG_SMP
90         .pushable_tasks = PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO),
91 #endif
92 #ifdef CONFIG_CGROUP_SCHED
93         .sched_task_group = &root_task_group,
94 #endif
95         .ptraced        = LIST_HEAD_INIT(init_task.ptraced),
96         .ptrace_entry   = LIST_HEAD_INIT(init_task.ptrace_entry),
97         .real_parent    = &init_task,
98         .parent         = &init_task,
99         .children       = LIST_HEAD_INIT(init_task.children),
100         .sibling        = LIST_HEAD_INIT(init_task.sibling),
101         .group_leader   = &init_task,
102         RCU_POINTER_INITIALIZER(real_cred, &init_cred),
103         RCU_POINTER_INITIALIZER(cred, &init_cred),
104         .comm           = INIT_TASK_COMM,
105         .thread         = INIT_THREAD,
106         .fs             = &init_fs,
107         .files          = &init_files,
108         .signal         = &init_signals,
109         .sighand        = &init_sighand,
110         .nsproxy        = &init_nsproxy,
111         .pending        = {
112                 .list = LIST_HEAD_INIT(init_task.pending.list),
113                 .signal = {{0}}
114         },
115         .blocked        = {{0}},
116         .alloc_lock     = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock),
117         .journal_info   = NULL,
118         INIT_CPU_TIMERS(init_task)
119         .pi_lock        = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),
120         .timer_slack_ns = 50000, /* 50 usec default slack */
121         .thread_pid     = &init_struct_pid,
122         .thread_group   = LIST_HEAD_INIT(init_task.thread_group),
123         .thread_node    = LIST_HEAD_INIT(init_signals.thread_head),
124 #ifdef CONFIG_AUDITSYSCALL
125         .loginuid       = INVALID_UID,
126         .sessionid      = AUDIT_SID_UNSET,
127 #endif
128 #ifdef CONFIG_PERF_EVENTS
129         .perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex),
130         .perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list),
131 #endif
132 #ifdef CONFIG_PREEMPT_RCU
133         .rcu_read_lock_nesting = 0,
134         .rcu_read_unlock_special.s = 0,
135         .rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry),
136         .rcu_blocked_node = NULL,
137 #endif
138 #ifdef CONFIG_TASKS_RCU
139         .rcu_tasks_holdout = false,
140         .rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),
141         .rcu_tasks_idle_cpu = -1,
142 #endif
143 #ifdef CONFIG_CPUSETS
144         .mems_allowed_seq = SEQCNT_ZERO(init_task.mems_allowed_seq),
145 #endif
146 #ifdef CONFIG_RT_MUTEXES
147         .pi_waiters     = RB_ROOT_CACHED,
148         .pi_top_task    = NULL,
149 #endif
150         INIT_PREV_CPUTIME(init_task)
151 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
152         .vtime.seqcount = SEQCNT_ZERO(init_task.vtime_seqcount),
153         .vtime.starttime = 0,
154         .vtime.state    = VTIME_SYS,
155 #endif
156 #ifdef CONFIG_NUMA_BALANCING
157         .numa_preferred_nid = -1,
158         .numa_group     = NULL,
159         .numa_faults    = NULL,
160 #endif
161 #ifdef CONFIG_KASAN
162         .kasan_depth    = 1,
163 #endif
164 #ifdef CONFIG_TRACE_IRQFLAGS
165         .softirqs_enabled = 1,
166 #endif
167 #ifdef CONFIG_LOCKDEP
168         .lockdep_recursion = 0,
169 #endif
170 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
171         .ret_stack      = NULL,
172 #endif
173 #if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPT)
174         .trace_recursion = 0,
175 #endif
176 #ifdef CONFIG_LIVEPATCH
177         .patch_state    = KLP_UNDEFINED,
178 #endif
179 #ifdef CONFIG_SECURITY
180         .security       = NULL,
181 #endif
182 };
183 EXPORT_SYMBOL(init_task);
184
185 /*
186  * Initial thread structure. Alignment of this is handled by a special
187  * linker map entry.
188  */
189 #ifndef CONFIG_THREAD_INFO_IN_TASK
190 struct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task);
191 #endif