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1#include <linux/init_task.h>
2#include <linux/export.h>
3#include <linux/mqueue.h>
4#include <linux/sched.h>
5#include <linux/sched/sysctl.h>
6#include <linux/sched/rt.h>
7#include <linux/init.h>
8#include <linux/fs.h>
9#include <linux/mm.h>
10
11#include <asm/pgtable.h>
12#include <asm/uaccess.h>
13
14static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
15static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
16
17/* Initial task structure */
18struct task_struct init_task = INIT_TASK(init_task);
19EXPORT_SYMBOL(init_task);
20
21/*
22 * Initial thread structure. Alignment of this is handled by a special
23 * linker map entry.
24 */
25union thread_union init_thread_union __init_task_data =
26 { INIT_THREAD_INFO(init_task) };
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#include <linux/numa.h>
14
15#include <asm/pgtable.h>
16#include <linux/uaccess.h>
17
18static struct signal_struct init_signals = {
19 .nr_threads = 1,
20 .thread_head = LIST_HEAD_INIT(init_task.thread_node),
21 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(init_signals.wait_chldexit),
22 .shared_pending = {
23 .list = LIST_HEAD_INIT(init_signals.shared_pending.list),
24 .signal = {{0}}
25 },
26 .multiprocess = HLIST_HEAD_INIT,
27 .rlim = INIT_RLIMITS,
28 .cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),
29#ifdef CONFIG_POSIX_TIMERS
30 .posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),
31 .cputimer = {
32 .cputime_atomic = INIT_CPUTIME_ATOMIC,
33 },
34#endif
35 INIT_CPU_TIMERS(init_signals)
36 .pids = {
37 [PIDTYPE_PID] = &init_struct_pid,
38 [PIDTYPE_TGID] = &init_struct_pid,
39 [PIDTYPE_PGID] = &init_struct_pid,
40 [PIDTYPE_SID] = &init_struct_pid,
41 },
42 INIT_PREV_CPUTIME(init_signals)
43};
44
45static struct sighand_struct init_sighand = {
46 .count = REFCOUNT_INIT(1),
47 .action = { { { .sa_handler = SIG_DFL, } }, },
48 .siglock = __SPIN_LOCK_UNLOCKED(init_sighand.siglock),
49 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh),
50};
51
52/*
53 * Set up the first task table, touch at your own risk!. Base=0,
54 * limit=0x1fffff (=2MB)
55 */
56struct task_struct init_task
57#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
58 __init_task_data
59#endif
60= {
61#ifdef CONFIG_THREAD_INFO_IN_TASK
62 .thread_info = INIT_THREAD_INFO(init_task),
63 .stack_refcount = REFCOUNT_INIT(1),
64#endif
65 .state = 0,
66 .stack = init_stack,
67 .usage = REFCOUNT_INIT(2),
68 .flags = PF_KTHREAD,
69 .prio = MAX_PRIO - 20,
70 .static_prio = MAX_PRIO - 20,
71 .normal_prio = MAX_PRIO - 20,
72 .policy = SCHED_NORMAL,
73 .cpus_ptr = &init_task.cpus_mask,
74 .cpus_mask = 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_AUDIT
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 = NUMA_NO_NODE,
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_depth = 0, /* no locks held yet */
169 .curr_chain_key = INITIAL_CHAIN_KEY,
170 .lockdep_recursion = 0,
171#endif
172#ifdef CONFIG_FUNCTION_GRAPH_TRACER
173 .ret_stack = NULL,
174#endif
175#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPTION)
176 .trace_recursion = 0,
177#endif
178#ifdef CONFIG_LIVEPATCH
179 .patch_state = KLP_UNDEFINED,
180#endif
181#ifdef CONFIG_SECURITY
182 .security = NULL,
183#endif
184};
185EXPORT_SYMBOL(init_task);
186
187/*
188 * Initial thread structure. Alignment of this is handled by a special
189 * linker map entry.
190 */
191#ifndef CONFIG_THREAD_INFO_IN_TASK
192struct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task);
193#endif