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1da177e4 LT |
1 | #ifndef _LINUX__INIT_TASK_H |
2 | #define _LINUX__INIT_TASK_H | |
3 | ||
ab2af1f5 | 4 | #include <linux/rcupdate.h> |
de30a2b3 | 5 | #include <linux/irqflags.h> |
4865ecf1 | 6 | #include <linux/utsname.h> |
fbb9ce95 | 7 | #include <linux/lockdep.h> |
5ac9f622 | 8 | #include <linux/ftrace.h> |
73ea4130 | 9 | #include <linux/ipc.h> |
9a575a92 | 10 | #include <linux/pid_namespace.h> |
acce292c | 11 | #include <linux/user_namespace.h> |
3898b1b4 | 12 | #include <linux/securebits.h> |
6a61671b | 13 | #include <linux/seqlock.h> |
fb00aca4 | 14 | #include <linux/rbtree.h> |
772698f6 | 15 | #include <net/net_namespace.h> |
77852fea | 16 | #include <linux/sched/rt.h> |
1da177e4 | 17 | |
c65eacbe AL |
18 | #include <asm/thread_info.h> |
19 | ||
806c09a7 DF |
20 | #ifdef CONFIG_SMP |
21 | # define INIT_PUSHABLE_TASKS(tsk) \ | |
22 | .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), | |
23 | #else | |
24 | # define INIT_PUSHABLE_TASKS(tsk) | |
25 | #endif | |
26 | ||
f52111b1 | 27 | extern struct files_struct init_files; |
18d8fda7 | 28 | extern struct fs_struct init_fs; |
1da177e4 | 29 | |
cc9a6c87 | 30 | #ifdef CONFIG_CPUSETS |
1ca7d67c JS |
31 | #define INIT_CPUSET_SEQ(tsk) \ |
32 | .mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq), | |
cc9a6c87 | 33 | #else |
1ca7d67c | 34 | #define INIT_CPUSET_SEQ(tsk) |
cc9a6c87 MG |
35 | #endif |
36 | ||
9d7fb042 PZ |
37 | #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
38 | #define INIT_PREV_CPUTIME(x) .prev_cputime = { \ | |
39 | .lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \ | |
40 | }, | |
41 | #else | |
42 | #define INIT_PREV_CPUTIME(x) | |
43 | #endif | |
44 | ||
1ec320af | 45 | #define INIT_SIGNALS(sig) { \ |
b3ac022c | 46 | .nr_threads = 1, \ |
0c740d0a | 47 | .thread_head = LIST_HEAD_INIT(init_task.thread_node), \ |
1da177e4 | 48 | .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ |
1ec320af | 49 | .shared_pending = { \ |
1da177e4 | 50 | .list = LIST_HEAD_INIT(sig.shared_pending.list), \ |
1ec320af | 51 | .signal = {{0}}}, \ |
1da177e4 LT |
52 | .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ |
53 | .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ | |
54 | .rlim = INIT_RLIMITS, \ | |
4cd4c1b4 | 55 | .cputimer = { \ |
71107445 | 56 | .cputime_atomic = INIT_CPUTIME_ATOMIC, \ |
d5c373eb | 57 | .running = false, \ |
c8d75aa4 | 58 | .checking_timer = false, \ |
4cd4c1b4 | 59 | }, \ |
9d7fb042 | 60 | INIT_PREV_CPUTIME(sig) \ |
9b1bf12d KM |
61 | .cred_guard_mutex = \ |
62 | __MUTEX_INITIALIZER(sig.cred_guard_mutex), \ | |
1da177e4 LT |
63 | } |
64 | ||
ab516013 | 65 | extern struct nsproxy init_nsproxy; |
ab516013 | 66 | |
1da177e4 LT |
67 | #define INIT_SIGHAND(sighand) { \ |
68 | .count = ATOMIC_INIT(1), \ | |
0a14a130 | 69 | .action = { { { .sa_handler = SIG_DFL, } }, }, \ |
e4d91918 | 70 | .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ |
b8fceee1 | 71 | .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ |
1da177e4 LT |
72 | } |
73 | ||
74 | extern struct group_info init_groups; | |
75 | ||
820e45db SB |
76 | #define INIT_STRUCT_PID { \ |
77 | .count = ATOMIC_INIT(1), \ | |
820e45db | 78 | .tasks = { \ |
f2001145 ON |
79 | { .first = NULL }, \ |
80 | { .first = NULL }, \ | |
81 | { .first = NULL }, \ | |
820e45db | 82 | }, \ |
4c3f2ead SB |
83 | .level = 0, \ |
84 | .numbers = { { \ | |
85 | .nr = 0, \ | |
86 | .ns = &init_pid_ns, \ | |
87 | .pid_chain = { .next = NULL, .pprev = NULL }, \ | |
88 | }, } \ | |
820e45db SB |
89 | } |
90 | ||
91 | #define INIT_PID_LINK(type) \ | |
92 | { \ | |
93 | .node = { \ | |
94 | .next = NULL, \ | |
f2001145 | 95 | .pprev = NULL, \ |
820e45db SB |
96 | }, \ |
97 | .pid = &init_struct_pid, \ | |
98 | } | |
99 | ||
bfef93a5 AV |
100 | #ifdef CONFIG_AUDITSYSCALL |
101 | #define INIT_IDS \ | |
e1760bd5 | 102 | .loginuid = INVALID_UID, \ |
4440e854 | 103 | .sessionid = (unsigned int)-1, |
bfef93a5 AV |
104 | #else |
105 | #define INIT_IDS | |
106 | #endif | |
3b7391de | 107 | |
28f6569a | 108 | #ifdef CONFIG_PREEMPT_RCU |
a57eb940 PM |
109 | #define INIT_TASK_RCU_TREE_PREEMPT() \ |
110 | .rcu_blocked_node = NULL, | |
111 | #else | |
112 | #define INIT_TASK_RCU_TREE_PREEMPT(tsk) | |
113 | #endif | |
114 | #ifdef CONFIG_PREEMPT_RCU | |
f41d911f PM |
115 | #define INIT_TASK_RCU_PREEMPT(tsk) \ |
116 | .rcu_read_lock_nesting = 0, \ | |
1d082fd0 | 117 | .rcu_read_unlock_special.s = 0, \ |
a57eb940 | 118 | .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ |
abaa93d9 | 119 | INIT_TASK_RCU_TREE_PREEMPT() |
f41d911f PM |
120 | #else |
121 | #define INIT_TASK_RCU_PREEMPT(tsk) | |
122 | #endif | |
8315f422 PM |
123 | #ifdef CONFIG_TASKS_RCU |
124 | #define INIT_TASK_RCU_TASKS(tsk) \ | |
125 | .rcu_tasks_holdout = false, \ | |
126 | .rcu_tasks_holdout_list = \ | |
176f8f7a PM |
127 | LIST_HEAD_INIT(tsk.rcu_tasks_holdout_list), \ |
128 | .rcu_tasks_idle_cpu = -1, | |
8315f422 PM |
129 | #else |
130 | #define INIT_TASK_RCU_TASKS(tsk) | |
131 | #endif | |
f41d911f | 132 | |
b6dff3ec DH |
133 | extern struct cred init_cred; |
134 | ||
8323f26c PZ |
135 | extern struct task_group root_task_group; |
136 | ||
137 | #ifdef CONFIG_CGROUP_SCHED | |
138 | # define INIT_CGROUP_SCHED(tsk) \ | |
139 | .sched_task_group = &root_task_group, | |
140 | #else | |
141 | # define INIT_CGROUP_SCHED(tsk) | |
142 | #endif | |
143 | ||
cdd6c482 | 144 | #ifdef CONFIG_PERF_EVENTS |
8323f26c | 145 | # define INIT_PERF_EVENTS(tsk) \ |
cdd6c482 IM |
146 | .perf_event_mutex = \ |
147 | __MUTEX_INITIALIZER(tsk.perf_event_mutex), \ | |
148 | .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list), | |
082ff5a2 | 149 | #else |
cdd6c482 | 150 | # define INIT_PERF_EVENTS(tsk) |
082ff5a2 PZ |
151 | #endif |
152 | ||
6a61671b FW |
153 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
154 | # define INIT_VTIME(tsk) \ | |
b7ce2277 | 155 | .vtime_seqcount = SEQCNT_ZERO(tsk.vtime_seqcount), \ |
6a61671b FW |
156 | .vtime_snap = 0, \ |
157 | .vtime_snap_whence = VTIME_SYS, | |
158 | #else | |
159 | # define INIT_VTIME(tsk) | |
160 | #endif | |
161 | ||
f1c6f1a7 CE |
162 | #define INIT_TASK_COMM "swapper" |
163 | ||
fb00aca4 PZ |
164 | #ifdef CONFIG_RT_MUTEXES |
165 | # define INIT_RT_MUTEXES(tsk) \ | |
166 | .pi_waiters = RB_ROOT, \ | |
167 | .pi_waiters_leftmost = NULL, | |
168 | #else | |
169 | # define INIT_RT_MUTEXES(tsk) | |
170 | #endif | |
171 | ||
d8b163c4 KT |
172 | #ifdef CONFIG_NUMA_BALANCING |
173 | # define INIT_NUMA_BALANCING(tsk) \ | |
174 | .numa_preferred_nid = -1, \ | |
175 | .numa_group = NULL, \ | |
176 | .numa_faults = NULL, | |
177 | #else | |
178 | # define INIT_NUMA_BALANCING(tsk) | |
179 | #endif | |
180 | ||
c420f167 AR |
181 | #ifdef CONFIG_KASAN |
182 | # define INIT_KASAN(tsk) \ | |
183 | .kasan_depth = 1, | |
184 | #else | |
185 | # define INIT_KASAN(tsk) | |
186 | #endif | |
187 | ||
c65eacbe | 188 | #ifdef CONFIG_THREAD_INFO_IN_TASK |
68f24b08 AL |
189 | # define INIT_TASK_TI(tsk) \ |
190 | .thread_info = INIT_THREAD_INFO(tsk), \ | |
191 | .stack_refcount = ATOMIC_INIT(1), | |
c65eacbe AL |
192 | #else |
193 | # define INIT_TASK_TI(tsk) | |
194 | #endif | |
195 | ||
1da177e4 LT |
196 | /* |
197 | * INIT_TASK is used to set up the first task table, touch at | |
198 | * your own risk!. Base=0, limit=0x1fffff (=2MB) | |
199 | */ | |
200 | #define INIT_TASK(tsk) \ | |
201 | { \ | |
c65eacbe | 202 | INIT_TASK_TI(tsk) \ |
1da177e4 | 203 | .state = 0, \ |
7f1a00b6 | 204 | .stack = init_stack, \ |
1da177e4 | 205 | .usage = ATOMIC_INIT(2), \ |
7b34e428 | 206 | .flags = PF_KTHREAD, \ |
1da177e4 LT |
207 | .prio = MAX_PRIO-20, \ |
208 | .static_prio = MAX_PRIO-20, \ | |
b29739f9 | 209 | .normal_prio = MAX_PRIO-20, \ |
1da177e4 LT |
210 | .policy = SCHED_NORMAL, \ |
211 | .cpus_allowed = CPU_MASK_ALL, \ | |
29baa747 | 212 | .nr_cpus_allowed= NR_CPUS, \ |
1da177e4 LT |
213 | .mm = NULL, \ |
214 | .active_mm = &init_mm, \ | |
f56141e3 AL |
215 | .restart_block = { \ |
216 | .fn = do_no_restart_syscall, \ | |
217 | }, \ | |
4a55bd5e PZ |
218 | .se = { \ |
219 | .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ | |
220 | }, \ | |
fa717060 PZ |
221 | .rt = { \ |
222 | .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ | |
de5bdff7 | 223 | .time_slice = RR_TIMESLICE, \ |
6f505b16 | 224 | }, \ |
1da177e4 | 225 | .tasks = LIST_HEAD_INIT(tsk.tasks), \ |
806c09a7 | 226 | INIT_PUSHABLE_TASKS(tsk) \ |
8323f26c | 227 | INIT_CGROUP_SCHED(tsk) \ |
f470021a RM |
228 | .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ |
229 | .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ | |
1da177e4 LT |
230 | .real_parent = &tsk, \ |
231 | .parent = &tsk, \ | |
232 | .children = LIST_HEAD_INIT(tsk.children), \ | |
233 | .sibling = LIST_HEAD_INIT(tsk.sibling), \ | |
234 | .group_leader = &tsk, \ | |
d36cc701 PM |
235 | RCU_POINTER_INITIALIZER(real_cred, &init_cred), \ |
236 | RCU_POINTER_INITIALIZER(cred, &init_cred), \ | |
f1c6f1a7 | 237 | .comm = INIT_TASK_COMM, \ |
1da177e4 LT |
238 | .thread = INIT_THREAD, \ |
239 | .fs = &init_fs, \ | |
240 | .files = &init_files, \ | |
241 | .signal = &init_signals, \ | |
242 | .sighand = &init_sighand, \ | |
ab516013 | 243 | .nsproxy = &init_nsproxy, \ |
1da177e4 LT |
244 | .pending = { \ |
245 | .list = LIST_HEAD_INIT(tsk.pending.list), \ | |
246 | .signal = {{0}}}, \ | |
247 | .blocked = {{0}}, \ | |
e4d91918 | 248 | .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ |
b6e3224f | 249 | .journal_info = NULL, \ |
1da177e4 | 250 | .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ |
1d615482 | 251 | .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ |
6976675d | 252 | .timer_slack_ns = 50000, /* 50 usec default slack */ \ |
820e45db SB |
253 | .pids = { \ |
254 | [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ | |
255 | [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ | |
256 | [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ | |
257 | }, \ | |
fa2755e2 | 258 | .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ |
0c740d0a | 259 | .thread_node = LIST_HEAD_INIT(init_signals.thread_head), \ |
bfef93a5 | 260 | INIT_IDS \ |
cdd6c482 | 261 | INIT_PERF_EVENTS(tsk) \ |
de30a2b3 | 262 | INIT_TRACE_IRQFLAGS \ |
fbb9ce95 | 263 | INIT_LOCKDEP \ |
5ac9f622 | 264 | INIT_FTRACE_GRAPH \ |
261842b7 | 265 | INIT_TRACE_RECURSION \ |
f41d911f | 266 | INIT_TASK_RCU_PREEMPT(tsk) \ |
8315f422 | 267 | INIT_TASK_RCU_TASKS(tsk) \ |
1ca7d67c | 268 | INIT_CPUSET_SEQ(tsk) \ |
fb00aca4 | 269 | INIT_RT_MUTEXES(tsk) \ |
9d7fb042 | 270 | INIT_PREV_CPUTIME(tsk) \ |
6a61671b | 271 | INIT_VTIME(tsk) \ |
d8b163c4 | 272 | INIT_NUMA_BALANCING(tsk) \ |
c420f167 | 273 | INIT_KASAN(tsk) \ |
1da177e4 LT |
274 | } |
275 | ||
276 | ||
277 | #define INIT_CPU_TIMERS(cpu_timers) \ | |
278 | { \ | |
279 | LIST_HEAD_INIT(cpu_timers[0]), \ | |
280 | LIST_HEAD_INIT(cpu_timers[1]), \ | |
281 | LIST_HEAD_INIT(cpu_timers[2]), \ | |
282 | } | |
283 | ||
857eceeb | 284 | /* Attach to the init_task data structure for proper alignment */ |
2af7687f | 285 | #define __init_task_data __attribute__((__section__(".data..init_task"))) |
857eceeb | 286 | |
1da177e4 LT |
287 | |
288 | #endif |