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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 <net/net_namespace.h> |
15 | #include <linux/sched/rt.h> |
16 | |
17 | #ifdef CONFIG_SMP |
18 | # define INIT_PUSHABLE_TASKS(tsk) \ |
19 | .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), |
20 | #else |
21 | # define INIT_PUSHABLE_TASKS(tsk) |
22 | #endif |
23 | |
24 | extern struct files_struct init_files; |
25 | extern struct fs_struct init_fs; |
26 | |
27 | #ifdef CONFIG_CGROUPS |
28 | #define INIT_GROUP_RWSEM(sig) \ |
29 | .group_rwsem = __RWSEM_INITIALIZER(sig.group_rwsem), |
30 | #else |
31 | #define INIT_GROUP_RWSEM(sig) |
32 | #endif |
33 | |
34 | #ifdef CONFIG_CPUSETS |
35 | #define INIT_CPUSET_SEQ \ |
36 | .mems_allowed_seq = SEQCNT_ZERO, |
37 | #else |
38 | #define INIT_CPUSET_SEQ |
39 | #endif |
40 | |
41 | #define INIT_SIGNALS(sig) { \ |
42 | .nr_threads = 1, \ |
43 | .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ |
44 | .shared_pending = { \ |
45 | .list = LIST_HEAD_INIT(sig.shared_pending.list), \ |
46 | .signal = {{0}}}, \ |
47 | .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ |
48 | .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ |
49 | .rlim = INIT_RLIMITS, \ |
50 | .cputimer = { \ |
51 | .cputime = INIT_CPUTIME, \ |
52 | .running = 0, \ |
53 | .lock = __RAW_SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ |
54 | }, \ |
55 | .cred_guard_mutex = \ |
56 | __MUTEX_INITIALIZER(sig.cred_guard_mutex), \ |
57 | INIT_GROUP_RWSEM(sig) \ |
58 | } |
59 | |
60 | extern struct nsproxy init_nsproxy; |
61 | |
62 | #define INIT_SIGHAND(sighand) { \ |
63 | .count = ATOMIC_INIT(1), \ |
64 | .action = { { { .sa_handler = SIG_DFL, } }, }, \ |
65 | .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ |
66 | .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ |
67 | } |
68 | |
69 | extern struct group_info init_groups; |
70 | |
71 | #define INIT_STRUCT_PID { \ |
72 | .count = ATOMIC_INIT(1), \ |
73 | .tasks = { \ |
74 | { .first = NULL }, \ |
75 | { .first = NULL }, \ |
76 | { .first = NULL }, \ |
77 | }, \ |
78 | .level = 0, \ |
79 | .numbers = { { \ |
80 | .nr = 0, \ |
81 | .ns = &init_pid_ns, \ |
82 | .pid_chain = { .next = NULL, .pprev = NULL }, \ |
83 | }, } \ |
84 | } |
85 | |
86 | #define INIT_PID_LINK(type) \ |
87 | { \ |
88 | .node = { \ |
89 | .next = NULL, \ |
90 | .pprev = NULL, \ |
91 | }, \ |
92 | .pid = &init_struct_pid, \ |
93 | } |
94 | |
95 | #ifdef CONFIG_AUDITSYSCALL |
96 | #define INIT_IDS \ |
97 | .loginuid = INVALID_UID, \ |
98 | .sessionid = -1, |
99 | #else |
100 | #define INIT_IDS |
101 | #endif |
102 | |
103 | #ifdef CONFIG_RCU_BOOST |
104 | #define INIT_TASK_RCU_BOOST() \ |
105 | .rcu_boost_mutex = NULL, |
106 | #else |
107 | #define INIT_TASK_RCU_BOOST() |
108 | #endif |
109 | #ifdef CONFIG_TREE_PREEMPT_RCU |
110 | #define INIT_TASK_RCU_TREE_PREEMPT() \ |
111 | .rcu_blocked_node = NULL, |
112 | #else |
113 | #define INIT_TASK_RCU_TREE_PREEMPT(tsk) |
114 | #endif |
115 | #ifdef CONFIG_PREEMPT_RCU |
116 | #define INIT_TASK_RCU_PREEMPT(tsk) \ |
117 | .rcu_read_lock_nesting = 0, \ |
118 | .rcu_read_unlock_special = 0, \ |
119 | .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ |
120 | INIT_TASK_RCU_TREE_PREEMPT() \ |
121 | INIT_TASK_RCU_BOOST() |
122 | #else |
123 | #define INIT_TASK_RCU_PREEMPT(tsk) |
124 | #endif |
125 | |
126 | extern struct cred init_cred; |
127 | |
128 | extern struct task_group root_task_group; |
129 | |
130 | #ifdef CONFIG_CGROUP_SCHED |
131 | # define INIT_CGROUP_SCHED(tsk) \ |
132 | .sched_task_group = &root_task_group, |
133 | #else |
134 | # define INIT_CGROUP_SCHED(tsk) |
135 | #endif |
136 | |
137 | #ifdef CONFIG_PERF_EVENTS |
138 | # define INIT_PERF_EVENTS(tsk) \ |
139 | .perf_event_mutex = \ |
140 | __MUTEX_INITIALIZER(tsk.perf_event_mutex), \ |
141 | .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list), |
142 | #else |
143 | # define INIT_PERF_EVENTS(tsk) |
144 | #endif |
145 | |
146 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
147 | # define INIT_VTIME(tsk) \ |
148 | .vtime_seqlock = __SEQLOCK_UNLOCKED(tsk.vtime_seqlock), \ |
149 | .vtime_snap = 0, \ |
150 | .vtime_snap_whence = VTIME_SYS, |
151 | #else |
152 | # define INIT_VTIME(tsk) |
153 | #endif |
154 | |
155 | #define INIT_TASK_COMM "swapper" |
156 | |
157 | /* |
158 | * INIT_TASK is used to set up the first task table, touch at |
159 | * your own risk!. Base=0, limit=0x1fffff (=2MB) |
160 | */ |
161 | #define INIT_TASK(tsk) \ |
162 | { \ |
163 | .state = 0, \ |
164 | .stack = &init_thread_info, \ |
165 | .usage = ATOMIC_INIT(2), \ |
166 | .flags = PF_KTHREAD, \ |
167 | .prio = MAX_PRIO-20, \ |
168 | .static_prio = MAX_PRIO-20, \ |
169 | .normal_prio = MAX_PRIO-20, \ |
170 | .policy = SCHED_NORMAL, \ |
171 | .cpus_allowed = CPU_MASK_ALL, \ |
172 | .nr_cpus_allowed= NR_CPUS, \ |
173 | .mm = NULL, \ |
174 | .active_mm = &init_mm, \ |
175 | .se = { \ |
176 | .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ |
177 | }, \ |
178 | .rt = { \ |
179 | .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ |
180 | .time_slice = RR_TIMESLICE, \ |
181 | }, \ |
182 | .tasks = LIST_HEAD_INIT(tsk.tasks), \ |
183 | INIT_PUSHABLE_TASKS(tsk) \ |
184 | INIT_CGROUP_SCHED(tsk) \ |
185 | .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ |
186 | .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ |
187 | .real_parent = &tsk, \ |
188 | .parent = &tsk, \ |
189 | .children = LIST_HEAD_INIT(tsk.children), \ |
190 | .sibling = LIST_HEAD_INIT(tsk.sibling), \ |
191 | .group_leader = &tsk, \ |
192 | RCU_POINTER_INITIALIZER(real_cred, &init_cred), \ |
193 | RCU_POINTER_INITIALIZER(cred, &init_cred), \ |
194 | .comm = INIT_TASK_COMM, \ |
195 | .thread = INIT_THREAD, \ |
196 | .fs = &init_fs, \ |
197 | .files = &init_files, \ |
198 | .signal = &init_signals, \ |
199 | .sighand = &init_sighand, \ |
200 | .nsproxy = &init_nsproxy, \ |
201 | .pending = { \ |
202 | .list = LIST_HEAD_INIT(tsk.pending.list), \ |
203 | .signal = {{0}}}, \ |
204 | .blocked = {{0}}, \ |
205 | .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ |
206 | .journal_info = NULL, \ |
207 | .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ |
208 | .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ |
209 | .timer_slack_ns = 50000, /* 50 usec default slack */ \ |
210 | .pids = { \ |
211 | [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ |
212 | [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ |
213 | [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ |
214 | }, \ |
215 | .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ |
216 | INIT_IDS \ |
217 | INIT_PERF_EVENTS(tsk) \ |
218 | INIT_TRACE_IRQFLAGS \ |
219 | INIT_LOCKDEP \ |
220 | INIT_FTRACE_GRAPH \ |
221 | INIT_TRACE_RECURSION \ |
222 | INIT_TASK_RCU_PREEMPT(tsk) \ |
223 | INIT_CPUSET_SEQ \ |
224 | INIT_VTIME(tsk) \ |
225 | } |
226 | |
227 | |
228 | #define INIT_CPU_TIMERS(cpu_timers) \ |
229 | { \ |
230 | LIST_HEAD_INIT(cpu_timers[0]), \ |
231 | LIST_HEAD_INIT(cpu_timers[1]), \ |
232 | LIST_HEAD_INIT(cpu_timers[2]), \ |
233 | } |
234 | |
235 | /* Attach to the init_task data structure for proper alignment */ |
236 | #define __init_task_data __attribute__((__section__(".data..init_task"))) |
237 | |
238 | |
239 | #endif |
240 |
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