1#ifndef _LINUX__INIT_TASK_H
2#define _LINUX__INIT_TASK_H
3
4#include <linux/rcupdate.h>
5#include <linux/irqflags.h>
6#include <linux/utsname.h>
7#include <linux/lockdep.h>
8#include <linux/ftrace.h>
9#include <linux/ipc.h>
10#include <linux/pid_namespace.h>
11#include <linux/user_namespace.h>
12#include <linux/securebits.h>
13#include <linux/seqlock.h>
14#include <linux/rbtree.h>
15#include <net/net_namespace.h>
16#include <linux/sched/rt.h>
17
18#ifdef CONFIG_SMP
19# define INIT_PUSHABLE_TASKS(tsk) \
20 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO),
21#else
22# define INIT_PUSHABLE_TASKS(tsk)
23#endif
24
25extern struct files_struct init_files;
26extern struct fs_struct init_fs;
27
28#ifdef CONFIG_CGROUPS
29#define INIT_GROUP_RWSEM(sig) \
30 .group_rwsem = __RWSEM_INITIALIZER(sig.group_rwsem),
31#else
32#define INIT_GROUP_RWSEM(sig)
33#endif
34
35#ifdef CONFIG_CPUSETS
36#define INIT_CPUSET_SEQ(tsk) \
37 .mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq),
38#else
39#define INIT_CPUSET_SEQ(tsk)
40#endif
41
42#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
43#define INIT_PREV_CPUTIME(x) .prev_cputime = { \
44 .lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \
45},
46#else
47#define INIT_PREV_CPUTIME(x)
48#endif
49
50#define INIT_SIGNALS(sig) { \
51 .nr_threads = 1, \
52 .thread_head = LIST_HEAD_INIT(init_task.thread_node), \
53 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
54 .shared_pending = { \
55 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
56 .signal = {{0}}}, \
57 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
58 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
59 .rlim = INIT_RLIMITS, \
60 .cputimer = { \
61 .cputime = INIT_CPUTIME, \
62 .running = 0, \
63 .lock = __RAW_SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \
64 }, \
65 INIT_PREV_CPUTIME(sig) \
66 .cred_guard_mutex = \
67 __MUTEX_INITIALIZER(sig.cred_guard_mutex), \
68 INIT_GROUP_RWSEM(sig) \
69}
70
71extern struct nsproxy init_nsproxy;
72
73#define INIT_SIGHAND(sighand) { \
74 .count = ATOMIC_INIT(1), \
75 .action = { { { .sa_handler = SIG_DFL, } }, }, \
76 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
77 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
78}
79
80extern struct group_info init_groups;
81
82#define INIT_STRUCT_PID { \
83 .count = ATOMIC_INIT(1), \
84 .tasks = { \
85 { .first = NULL }, \
86 { .first = NULL }, \
87 { .first = NULL }, \
88 }, \
89 .level = 0, \
90 .numbers = { { \
91 .nr = 0, \
92 .ns = &init_pid_ns, \
93 .pid_chain = { .next = NULL, .pprev = NULL }, \
94 }, } \
95}
96
97#define INIT_PID_LINK(type) \
98{ \
99 .node = { \
100 .next = NULL, \
101 .pprev = NULL, \
102 }, \
103 .pid = &init_struct_pid, \
104}
105
106#ifdef CONFIG_AUDITSYSCALL
107#define INIT_IDS \
108 .loginuid = INVALID_UID, \
109 .sessionid = (unsigned int)-1,
110#else
111#define INIT_IDS
112#endif
113
114#ifdef CONFIG_RCU_BOOST
115#define INIT_TASK_RCU_BOOST() \
116 .rcu_boost_mutex = NULL,
117#else
118#define INIT_TASK_RCU_BOOST()
119#endif
120#ifdef CONFIG_TREE_PREEMPT_RCU
121#define INIT_TASK_RCU_TREE_PREEMPT() \
122 .rcu_blocked_node = NULL,
123#else
124#define INIT_TASK_RCU_TREE_PREEMPT(tsk)
125#endif
126#ifdef CONFIG_PREEMPT_RCU
127#define INIT_TASK_RCU_PREEMPT(tsk) \
128 .rcu_read_lock_nesting = 0, \
129 .rcu_read_unlock_special = 0, \
130 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \
131 INIT_TASK_RCU_TREE_PREEMPT() \
132 INIT_TASK_RCU_BOOST()
133#else
134#define INIT_TASK_RCU_PREEMPT(tsk)
135#endif
136
137extern struct cred init_cred;
138
139extern struct task_group root_task_group;
140
141#ifdef CONFIG_CGROUP_SCHED
142# define INIT_CGROUP_SCHED(tsk) \
143 .sched_task_group = &root_task_group,
144#else
145# define INIT_CGROUP_SCHED(tsk)
146#endif
147
148#ifdef CONFIG_PERF_EVENTS
149# define INIT_PERF_EVENTS(tsk) \
150 .perf_event_mutex = \
151 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \
152 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
153#else
154# define INIT_PERF_EVENTS(tsk)
155#endif
156
157#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
158# define INIT_VTIME(tsk) \
159 .vtime.seqlock = __SEQLOCK_UNLOCKED(tsk.vtime_seqlock), \
160 .vtime.starttime = 0, \
161 .vtime.state = VTIME_SYS,
162#else
163# define INIT_VTIME(tsk)
164#endif
165
166#define INIT_TASK_COMM "swapper"
167
168#ifdef CONFIG_RT_MUTEXES
169# define INIT_RT_MUTEXES(tsk) \
170 .pi_waiters = RB_ROOT, \
171 .pi_waiters_leftmost = NULL,
172#else
173# define INIT_RT_MUTEXES(tsk)
174#endif
175
176
177
178
179
180#define INIT_TASK(tsk) \
181{ \
182 .state = 0, \
183 .stack = &init_thread_info, \
184 .usage = ATOMIC_INIT(2), \
185 .flags = PF_KTHREAD, \
186 .prio = MAX_PRIO-20, \
187 .static_prio = MAX_PRIO-20, \
188 .normal_prio = MAX_PRIO-20, \
189 .policy = SCHED_NORMAL, \
190 .cpus_allowed = CPU_MASK_ALL, \
191 .nr_cpus_allowed= NR_CPUS, \
192 .mm = NULL, \
193 .active_mm = &init_mm, \
194 .se = { \
195 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
196 }, \
197 .rt = { \
198 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
199 .time_slice = RR_TIMESLICE, \
200 }, \
201 .tasks = LIST_HEAD_INIT(tsk.tasks), \
202 INIT_PUSHABLE_TASKS(tsk) \
203 INIT_CGROUP_SCHED(tsk) \
204 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
205 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
206 .real_parent = &tsk, \
207 .parent = &tsk, \
208 .children = LIST_HEAD_INIT(tsk.children), \
209 .sibling = LIST_HEAD_INIT(tsk.sibling), \
210 .group_leader = &tsk, \
211 RCU_POINTER_INITIALIZER(real_cred, &init_cred), \
212 RCU_POINTER_INITIALIZER(cred, &init_cred), \
213 .comm = INIT_TASK_COMM, \
214 .thread = INIT_THREAD, \
215 .fs = &init_fs, \
216 .files = &init_files, \
217 .signal = &init_signals, \
218 .sighand = &init_sighand, \
219 .nsproxy = &init_nsproxy, \
220 .pending = { \
221 .list = LIST_HEAD_INIT(tsk.pending.list), \
222 .signal = {{0}}}, \
223 .blocked = {{0}}, \
224 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
225 .journal_info = NULL, \
226 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
227 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
228 .timer_slack_ns = 50000, \
229 .pids = { \
230 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
231 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
232 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
233 }, \
234 .thread_group = LIST_HEAD_INIT(tsk.thread_group), \
235 .thread_node = LIST_HEAD_INIT(init_signals.thread_head), \
236 INIT_IDS \
237 INIT_PERF_EVENTS(tsk) \
238 INIT_TRACE_IRQFLAGS \
239 INIT_LOCKDEP \
240 INIT_FTRACE_GRAPH \
241 INIT_TRACE_RECURSION \
242 INIT_TASK_RCU_PREEMPT(tsk) \
243 INIT_CPUSET_SEQ(tsk) \
244 INIT_RT_MUTEXES(tsk) \
245 INIT_PREV_CPUTIME(tsk) \
246 INIT_VTIME(tsk) \
247}
248
249
250#define INIT_CPU_TIMERS(cpu_timers) \
251{ \
252 LIST_HEAD_INIT(cpu_timers[0]), \
253 LIST_HEAD_INIT(cpu_timers[1]), \
254 LIST_HEAD_INIT(cpu_timers[2]), \
255}
256
257
258#define __init_task_data __attribute__((__section__(".data..init_task")))
259
260
261#endif
262
