1 #ifndef _LINUX__INIT_TASK_H
2 #define _LINUX__INIT_TASK_H
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>
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 <linux/sched/autogroup.h>
16 #include <net/net_namespace.h>
17 #include <linux/sched/rt.h>
19 #include <asm/thread_info.h>
22 # define INIT_PUSHABLE_TASKS(tsk) \
23 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO),
25 # define INIT_PUSHABLE_TASKS(tsk)
28 extern struct files_struct init_files;
29 extern struct fs_struct init_fs;
32 #define INIT_CPUSET_SEQ(tsk) \
33 .mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq),
35 #define INIT_CPUSET_SEQ(tsk)
38 #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
39 #define INIT_PREV_CPUTIME(x) .prev_cputime = { \
40 .lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \
43 #define INIT_PREV_CPUTIME(x)
46 #ifdef CONFIG_POSIX_TIMERS
47 #define INIT_POSIX_TIMERS(s) \
48 .posix_timers = LIST_HEAD_INIT(s.posix_timers),
49 #define INIT_CPU_TIMERS(s) \
51 LIST_HEAD_INIT(s.cpu_timers[0]), \
52 LIST_HEAD_INIT(s.cpu_timers[1]), \
53 LIST_HEAD_INIT(s.cpu_timers[2]), \
55 #define INIT_CPUTIMER(s) \
57 .cputime_atomic = INIT_CPUTIME_ATOMIC, \
59 .checking_timer = false, \
62 #define INIT_POSIX_TIMERS(s)
63 #define INIT_CPU_TIMERS(s)
64 #define INIT_CPUTIMER(s)
67 #define INIT_SIGNALS(sig) { \
69 .thread_head = LIST_HEAD_INIT(init_task.thread_node), \
70 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
72 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
74 INIT_POSIX_TIMERS(sig) \
75 INIT_CPU_TIMERS(sig) \
76 .rlim = INIT_RLIMITS, \
78 INIT_PREV_CPUTIME(sig) \
80 __MUTEX_INITIALIZER(sig.cred_guard_mutex), \
83 extern struct nsproxy init_nsproxy;
85 #define INIT_SIGHAND(sighand) { \
86 .count = ATOMIC_INIT(1), \
87 .action = { { { .sa_handler = SIG_DFL, } }, }, \
88 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
89 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
92 extern struct group_info init_groups;
94 #define INIT_STRUCT_PID { \
95 .count = ATOMIC_INIT(1), \
104 .ns = &init_pid_ns, \
105 .pid_chain = { .next = NULL, .pprev = NULL }, \
109 #define INIT_PID_LINK(type) \
115 .pid = &init_struct_pid, \
118 #ifdef CONFIG_AUDITSYSCALL
120 .loginuid = INVALID_UID, \
121 .sessionid = (unsigned int)-1,
126 #ifdef CONFIG_PREEMPT_RCU
127 #define INIT_TASK_RCU_TREE_PREEMPT() \
128 .rcu_blocked_node = NULL,
130 #define INIT_TASK_RCU_TREE_PREEMPT(tsk)
132 #ifdef CONFIG_PREEMPT_RCU
133 #define INIT_TASK_RCU_PREEMPT(tsk) \
134 .rcu_read_lock_nesting = 0, \
135 .rcu_read_unlock_special.s = 0, \
136 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \
137 INIT_TASK_RCU_TREE_PREEMPT()
139 #define INIT_TASK_RCU_PREEMPT(tsk)
141 #ifdef CONFIG_TASKS_RCU
142 #define INIT_TASK_RCU_TASKS(tsk) \
143 .rcu_tasks_holdout = false, \
144 .rcu_tasks_holdout_list = \
145 LIST_HEAD_INIT(tsk.rcu_tasks_holdout_list), \
146 .rcu_tasks_idle_cpu = -1,
148 #define INIT_TASK_RCU_TASKS(tsk)
151 extern struct cred init_cred;
153 extern struct task_group root_task_group;
155 #ifdef CONFIG_CGROUP_SCHED
156 # define INIT_CGROUP_SCHED(tsk) \
157 .sched_task_group = &root_task_group,
159 # define INIT_CGROUP_SCHED(tsk)
162 #ifdef CONFIG_PERF_EVENTS
163 # define INIT_PERF_EVENTS(tsk) \
164 .perf_event_mutex = \
165 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \
166 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
168 # define INIT_PERF_EVENTS(tsk)
171 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
172 # define INIT_VTIME(tsk) \
173 .vtime_seqcount = SEQCNT_ZERO(tsk.vtime_seqcount), \
175 .vtime_snap_whence = VTIME_SYS,
177 # define INIT_VTIME(tsk)
180 #define INIT_TASK_COMM "swapper"
182 #ifdef CONFIG_RT_MUTEXES
183 # define INIT_RT_MUTEXES(tsk) \
184 .pi_waiters = RB_ROOT, \
185 .pi_waiters_leftmost = NULL,
187 # define INIT_RT_MUTEXES(tsk)
190 #ifdef CONFIG_NUMA_BALANCING
191 # define INIT_NUMA_BALANCING(tsk) \
192 .numa_preferred_nid = -1, \
193 .numa_group = NULL, \
196 # define INIT_NUMA_BALANCING(tsk)
200 # define INIT_KASAN(tsk) \
203 # define INIT_KASAN(tsk)
206 #ifdef CONFIG_THREAD_INFO_IN_TASK
207 # define INIT_TASK_TI(tsk) \
208 .thread_info = INIT_THREAD_INFO(tsk), \
209 .stack_refcount = ATOMIC_INIT(1),
211 # define INIT_TASK_TI(tsk)
215 * INIT_TASK is used to set up the first task table, touch at
216 * your own risk!. Base=0, limit=0x1fffff (=2MB)
218 #define INIT_TASK(tsk) \
222 .stack = init_stack, \
223 .usage = ATOMIC_INIT(2), \
224 .flags = PF_KTHREAD, \
225 .prio = MAX_PRIO-20, \
226 .static_prio = MAX_PRIO-20, \
227 .normal_prio = MAX_PRIO-20, \
228 .policy = SCHED_NORMAL, \
229 .cpus_allowed = CPU_MASK_ALL, \
230 .nr_cpus_allowed= NR_CPUS, \
232 .active_mm = &init_mm, \
234 .fn = do_no_restart_syscall, \
237 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
240 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
241 .time_slice = RR_TIMESLICE, \
243 .tasks = LIST_HEAD_INIT(tsk.tasks), \
244 INIT_PUSHABLE_TASKS(tsk) \
245 INIT_CGROUP_SCHED(tsk) \
246 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
247 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
248 .real_parent = &tsk, \
250 .children = LIST_HEAD_INIT(tsk.children), \
251 .sibling = LIST_HEAD_INIT(tsk.sibling), \
252 .group_leader = &tsk, \
253 RCU_POINTER_INITIALIZER(real_cred, &init_cred), \
254 RCU_POINTER_INITIALIZER(cred, &init_cred), \
255 .comm = INIT_TASK_COMM, \
256 .thread = INIT_THREAD, \
258 .files = &init_files, \
259 .signal = &init_signals, \
260 .sighand = &init_sighand, \
261 .nsproxy = &init_nsproxy, \
263 .list = LIST_HEAD_INIT(tsk.pending.list), \
266 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
267 .journal_info = NULL, \
268 INIT_CPU_TIMERS(tsk) \
269 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
270 .timer_slack_ns = 50000, /* 50 usec default slack */ \
272 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
273 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
274 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
276 .thread_group = LIST_HEAD_INIT(tsk.thread_group), \
277 .thread_node = LIST_HEAD_INIT(init_signals.thread_head), \
279 INIT_PERF_EVENTS(tsk) \
280 INIT_TRACE_IRQFLAGS \
283 INIT_TRACE_RECURSION \
284 INIT_TASK_RCU_PREEMPT(tsk) \
285 INIT_TASK_RCU_TASKS(tsk) \
286 INIT_CPUSET_SEQ(tsk) \
287 INIT_RT_MUTEXES(tsk) \
288 INIT_PREV_CPUTIME(tsk) \
290 INIT_NUMA_BALANCING(tsk) \
295 /* Attach to the init_task data structure for proper alignment */
296 #define __init_task_data __attribute__((__section__(".data..init_task")))