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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 | |
806c09a7 DF |
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 | ||
f52111b1 | 25 | extern struct files_struct init_files; |
18d8fda7 | 26 | extern struct fs_struct init_fs; |
1da177e4 | 27 | |
cc9a6c87 | 28 | #ifdef CONFIG_CPUSETS |
1ca7d67c JS |
29 | #define INIT_CPUSET_SEQ(tsk) \ |
30 | .mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq), | |
cc9a6c87 | 31 | #else |
1ca7d67c | 32 | #define INIT_CPUSET_SEQ(tsk) |
cc9a6c87 MG |
33 | #endif |
34 | ||
9d7fb042 PZ |
35 | #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
36 | #define INIT_PREV_CPUTIME(x) .prev_cputime = { \ | |
37 | .lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \ | |
38 | }, | |
39 | #else | |
40 | #define INIT_PREV_CPUTIME(x) | |
41 | #endif | |
42 | ||
1ec320af | 43 | #define INIT_SIGNALS(sig) { \ |
b3ac022c | 44 | .nr_threads = 1, \ |
0c740d0a | 45 | .thread_head = LIST_HEAD_INIT(init_task.thread_node), \ |
1da177e4 | 46 | .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ |
1ec320af | 47 | .shared_pending = { \ |
1da177e4 | 48 | .list = LIST_HEAD_INIT(sig.shared_pending.list), \ |
1ec320af | 49 | .signal = {{0}}}, \ |
1da177e4 LT |
50 | .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ |
51 | .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ | |
52 | .rlim = INIT_RLIMITS, \ | |
4cd4c1b4 | 53 | .cputimer = { \ |
71107445 | 54 | .cputime_atomic = INIT_CPUTIME_ATOMIC, \ |
d5c373eb | 55 | .running = false, \ |
c8d75aa4 | 56 | .checking_timer = false, \ |
4cd4c1b4 | 57 | }, \ |
9d7fb042 | 58 | INIT_PREV_CPUTIME(sig) \ |
9b1bf12d KM |
59 | .cred_guard_mutex = \ |
60 | __MUTEX_INITIALIZER(sig.cred_guard_mutex), \ | |
1da177e4 LT |
61 | } |
62 | ||
ab516013 | 63 | extern struct nsproxy init_nsproxy; |
ab516013 | 64 | |
1da177e4 LT |
65 | #define INIT_SIGHAND(sighand) { \ |
66 | .count = ATOMIC_INIT(1), \ | |
0a14a130 | 67 | .action = { { { .sa_handler = SIG_DFL, } }, }, \ |
e4d91918 | 68 | .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ |
b8fceee1 | 69 | .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ |
1da177e4 LT |
70 | } |
71 | ||
72 | extern struct group_info init_groups; | |
73 | ||
820e45db SB |
74 | #define INIT_STRUCT_PID { \ |
75 | .count = ATOMIC_INIT(1), \ | |
820e45db | 76 | .tasks = { \ |
f2001145 ON |
77 | { .first = NULL }, \ |
78 | { .first = NULL }, \ | |
79 | { .first = NULL }, \ | |
820e45db | 80 | }, \ |
4c3f2ead SB |
81 | .level = 0, \ |
82 | .numbers = { { \ | |
83 | .nr = 0, \ | |
84 | .ns = &init_pid_ns, \ | |
85 | .pid_chain = { .next = NULL, .pprev = NULL }, \ | |
86 | }, } \ | |
820e45db SB |
87 | } |
88 | ||
89 | #define INIT_PID_LINK(type) \ | |
90 | { \ | |
91 | .node = { \ | |
92 | .next = NULL, \ | |
f2001145 | 93 | .pprev = NULL, \ |
820e45db SB |
94 | }, \ |
95 | .pid = &init_struct_pid, \ | |
96 | } | |
97 | ||
bfef93a5 AV |
98 | #ifdef CONFIG_AUDITSYSCALL |
99 | #define INIT_IDS \ | |
e1760bd5 | 100 | .loginuid = INVALID_UID, \ |
4440e854 | 101 | .sessionid = (unsigned int)-1, |
bfef93a5 AV |
102 | #else |
103 | #define INIT_IDS | |
104 | #endif | |
3b7391de | 105 | |
28f6569a | 106 | #ifdef CONFIG_PREEMPT_RCU |
a57eb940 PM |
107 | #define INIT_TASK_RCU_TREE_PREEMPT() \ |
108 | .rcu_blocked_node = NULL, | |
109 | #else | |
110 | #define INIT_TASK_RCU_TREE_PREEMPT(tsk) | |
111 | #endif | |
112 | #ifdef CONFIG_PREEMPT_RCU | |
f41d911f PM |
113 | #define INIT_TASK_RCU_PREEMPT(tsk) \ |
114 | .rcu_read_lock_nesting = 0, \ | |
1d082fd0 | 115 | .rcu_read_unlock_special.s = 0, \ |
a57eb940 | 116 | .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ |
abaa93d9 | 117 | INIT_TASK_RCU_TREE_PREEMPT() |
f41d911f PM |
118 | #else |
119 | #define INIT_TASK_RCU_PREEMPT(tsk) | |
120 | #endif | |
8315f422 PM |
121 | #ifdef CONFIG_TASKS_RCU |
122 | #define INIT_TASK_RCU_TASKS(tsk) \ | |
123 | .rcu_tasks_holdout = false, \ | |
124 | .rcu_tasks_holdout_list = \ | |
176f8f7a PM |
125 | LIST_HEAD_INIT(tsk.rcu_tasks_holdout_list), \ |
126 | .rcu_tasks_idle_cpu = -1, | |
8315f422 PM |
127 | #else |
128 | #define INIT_TASK_RCU_TASKS(tsk) | |
129 | #endif | |
f41d911f | 130 | |
b6dff3ec DH |
131 | extern struct cred init_cred; |
132 | ||
8323f26c PZ |
133 | extern struct task_group root_task_group; |
134 | ||
135 | #ifdef CONFIG_CGROUP_SCHED | |
136 | # define INIT_CGROUP_SCHED(tsk) \ | |
137 | .sched_task_group = &root_task_group, | |
138 | #else | |
139 | # define INIT_CGROUP_SCHED(tsk) | |
140 | #endif | |
141 | ||
cdd6c482 | 142 | #ifdef CONFIG_PERF_EVENTS |
8323f26c | 143 | # define INIT_PERF_EVENTS(tsk) \ |
cdd6c482 IM |
144 | .perf_event_mutex = \ |
145 | __MUTEX_INITIALIZER(tsk.perf_event_mutex), \ | |
146 | .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list), | |
082ff5a2 | 147 | #else |
cdd6c482 | 148 | # define INIT_PERF_EVENTS(tsk) |
082ff5a2 PZ |
149 | #endif |
150 | ||
6a61671b FW |
151 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
152 | # define INIT_VTIME(tsk) \ | |
b7ce2277 | 153 | .vtime_seqcount = SEQCNT_ZERO(tsk.vtime_seqcount), \ |
6a61671b FW |
154 | .vtime_snap = 0, \ |
155 | .vtime_snap_whence = VTIME_SYS, | |
156 | #else | |
157 | # define INIT_VTIME(tsk) | |
158 | #endif | |
159 | ||
f1c6f1a7 CE |
160 | #define INIT_TASK_COMM "swapper" |
161 | ||
fb00aca4 PZ |
162 | #ifdef CONFIG_RT_MUTEXES |
163 | # define INIT_RT_MUTEXES(tsk) \ | |
164 | .pi_waiters = RB_ROOT, \ | |
165 | .pi_waiters_leftmost = NULL, | |
166 | #else | |
167 | # define INIT_RT_MUTEXES(tsk) | |
168 | #endif | |
169 | ||
d8b163c4 KT |
170 | #ifdef CONFIG_NUMA_BALANCING |
171 | # define INIT_NUMA_BALANCING(tsk) \ | |
172 | .numa_preferred_nid = -1, \ | |
173 | .numa_group = NULL, \ | |
174 | .numa_faults = NULL, | |
175 | #else | |
176 | # define INIT_NUMA_BALANCING(tsk) | |
177 | #endif | |
178 | ||
c420f167 AR |
179 | #ifdef CONFIG_KASAN |
180 | # define INIT_KASAN(tsk) \ | |
181 | .kasan_depth = 1, | |
182 | #else | |
183 | # define INIT_KASAN(tsk) | |
184 | #endif | |
185 | ||
1da177e4 LT |
186 | /* |
187 | * INIT_TASK is used to set up the first task table, touch at | |
188 | * your own risk!. Base=0, limit=0x1fffff (=2MB) | |
189 | */ | |
190 | #define INIT_TASK(tsk) \ | |
191 | { \ | |
192 | .state = 0, \ | |
f7e4217b | 193 | .stack = &init_thread_info, \ |
1da177e4 | 194 | .usage = ATOMIC_INIT(2), \ |
7b34e428 | 195 | .flags = PF_KTHREAD, \ |
1da177e4 LT |
196 | .prio = MAX_PRIO-20, \ |
197 | .static_prio = MAX_PRIO-20, \ | |
b29739f9 | 198 | .normal_prio = MAX_PRIO-20, \ |
1da177e4 LT |
199 | .policy = SCHED_NORMAL, \ |
200 | .cpus_allowed = CPU_MASK_ALL, \ | |
29baa747 | 201 | .nr_cpus_allowed= NR_CPUS, \ |
1da177e4 LT |
202 | .mm = NULL, \ |
203 | .active_mm = &init_mm, \ | |
f56141e3 AL |
204 | .restart_block = { \ |
205 | .fn = do_no_restart_syscall, \ | |
206 | }, \ | |
4a55bd5e PZ |
207 | .se = { \ |
208 | .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ | |
209 | }, \ | |
fa717060 PZ |
210 | .rt = { \ |
211 | .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ | |
de5bdff7 | 212 | .time_slice = RR_TIMESLICE, \ |
6f505b16 | 213 | }, \ |
1da177e4 | 214 | .tasks = LIST_HEAD_INIT(tsk.tasks), \ |
806c09a7 | 215 | INIT_PUSHABLE_TASKS(tsk) \ |
8323f26c | 216 | INIT_CGROUP_SCHED(tsk) \ |
f470021a RM |
217 | .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ |
218 | .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ | |
1da177e4 LT |
219 | .real_parent = &tsk, \ |
220 | .parent = &tsk, \ | |
221 | .children = LIST_HEAD_INIT(tsk.children), \ | |
222 | .sibling = LIST_HEAD_INIT(tsk.sibling), \ | |
223 | .group_leader = &tsk, \ | |
d36cc701 PM |
224 | RCU_POINTER_INITIALIZER(real_cred, &init_cred), \ |
225 | RCU_POINTER_INITIALIZER(cred, &init_cred), \ | |
f1c6f1a7 | 226 | .comm = INIT_TASK_COMM, \ |
1da177e4 LT |
227 | .thread = INIT_THREAD, \ |
228 | .fs = &init_fs, \ | |
229 | .files = &init_files, \ | |
230 | .signal = &init_signals, \ | |
231 | .sighand = &init_sighand, \ | |
ab516013 | 232 | .nsproxy = &init_nsproxy, \ |
1da177e4 LT |
233 | .pending = { \ |
234 | .list = LIST_HEAD_INIT(tsk.pending.list), \ | |
235 | .signal = {{0}}}, \ | |
236 | .blocked = {{0}}, \ | |
e4d91918 | 237 | .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ |
b6e3224f | 238 | .journal_info = NULL, \ |
1da177e4 | 239 | .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ |
1d615482 | 240 | .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ |
6976675d | 241 | .timer_slack_ns = 50000, /* 50 usec default slack */ \ |
820e45db SB |
242 | .pids = { \ |
243 | [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ | |
244 | [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ | |
245 | [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ | |
246 | }, \ | |
fa2755e2 | 247 | .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ |
0c740d0a | 248 | .thread_node = LIST_HEAD_INIT(init_signals.thread_head), \ |
bfef93a5 | 249 | INIT_IDS \ |
cdd6c482 | 250 | INIT_PERF_EVENTS(tsk) \ |
de30a2b3 | 251 | INIT_TRACE_IRQFLAGS \ |
fbb9ce95 | 252 | INIT_LOCKDEP \ |
5ac9f622 | 253 | INIT_FTRACE_GRAPH \ |
261842b7 | 254 | INIT_TRACE_RECURSION \ |
f41d911f | 255 | INIT_TASK_RCU_PREEMPT(tsk) \ |
8315f422 | 256 | INIT_TASK_RCU_TASKS(tsk) \ |
1ca7d67c | 257 | INIT_CPUSET_SEQ(tsk) \ |
fb00aca4 | 258 | INIT_RT_MUTEXES(tsk) \ |
9d7fb042 | 259 | INIT_PREV_CPUTIME(tsk) \ |
6a61671b | 260 | INIT_VTIME(tsk) \ |
d8b163c4 | 261 | INIT_NUMA_BALANCING(tsk) \ |
c420f167 | 262 | INIT_KASAN(tsk) \ |
1da177e4 LT |
263 | } |
264 | ||
265 | ||
266 | #define INIT_CPU_TIMERS(cpu_timers) \ | |
267 | { \ | |
268 | LIST_HEAD_INIT(cpu_timers[0]), \ | |
269 | LIST_HEAD_INIT(cpu_timers[1]), \ | |
270 | LIST_HEAD_INIT(cpu_timers[2]), \ | |
271 | } | |
272 | ||
857eceeb | 273 | /* Attach to the init_task data structure for proper alignment */ |
2af7687f | 274 | #define __init_task_data __attribute__((__section__(".data..init_task"))) |
857eceeb | 275 | |
1da177e4 LT |
276 | |
277 | #endif |