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 <net/net_namespace.h>
16 # define INIT_PUSHABLE_TASKS(tsk) \
17 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO),
19 # define INIT_PUSHABLE_TASKS(tsk)
22 extern struct files_struct init_files
;
23 extern struct fs_struct init_fs
;
26 #define INIT_GROUP_RWSEM(sig) \
27 .group_rwsem = __RWSEM_INITIALIZER(sig.group_rwsem),
29 #define INIT_GROUP_RWSEM(sig)
33 #define INIT_CPUSET_SEQ \
34 .mems_allowed_seq = SEQCNT_ZERO,
36 #define INIT_CPUSET_SEQ
39 #define INIT_SIGNALS(sig) { \
41 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
43 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
45 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
46 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
47 .rlim = INIT_RLIMITS, \
49 .cputime = INIT_CPUTIME, \
51 .lock = __RAW_SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \
54 __MUTEX_INITIALIZER(sig.cred_guard_mutex), \
55 INIT_GROUP_RWSEM(sig) \
58 extern struct nsproxy init_nsproxy
;
60 #define INIT_SIGHAND(sighand) { \
61 .count = ATOMIC_INIT(1), \
62 .action = { { { .sa_handler = SIG_DFL, } }, }, \
63 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
64 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
67 extern struct group_info init_groups
;
69 #define INIT_STRUCT_PID { \
70 .count = ATOMIC_INIT(1), \
80 .pid_chain = { .next = NULL, .pprev = NULL }, \
84 #define INIT_PID_LINK(type) \
90 .pid = &init_struct_pid, \
93 #ifdef CONFIG_AUDITSYSCALL
101 #ifdef CONFIG_RCU_BOOST
102 #define INIT_TASK_RCU_BOOST() \
103 .rcu_boost_mutex = NULL,
105 #define INIT_TASK_RCU_BOOST()
107 #ifdef CONFIG_TREE_PREEMPT_RCU
108 #define INIT_TASK_RCU_TREE_PREEMPT() \
109 .rcu_blocked_node = NULL,
111 #define INIT_TASK_RCU_TREE_PREEMPT(tsk)
113 #ifdef CONFIG_PREEMPT_RCU
114 #define INIT_TASK_RCU_PREEMPT(tsk) \
115 .rcu_read_lock_nesting = 0, \
116 .rcu_read_unlock_special = 0, \
117 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \
118 INIT_TASK_RCU_TREE_PREEMPT() \
119 INIT_TASK_RCU_BOOST()
121 #define INIT_TASK_RCU_PREEMPT(tsk)
124 extern struct cred init_cred
;
126 #ifdef CONFIG_PERF_EVENTS
127 # define INIT_PERF_EVENTS(tsk) \
128 .perf_event_mutex = \
129 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \
130 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
132 # define INIT_PERF_EVENTS(tsk)
135 #define INIT_TASK_COMM "swapper"
138 * INIT_TASK is used to set up the first task table, touch at
139 * your own risk!. Base=0, limit=0x1fffff (=2MB)
141 #define INIT_TASK(tsk) \
144 .stack = &init_thread_info, \
145 .usage = ATOMIC_INIT(2), \
146 .flags = PF_KTHREAD, \
147 .prio = MAX_PRIO-20, \
148 .static_prio = MAX_PRIO-20, \
149 .normal_prio = MAX_PRIO-20, \
150 .policy = SCHED_NORMAL, \
151 .cpus_allowed = CPU_MASK_ALL, \
153 .active_mm = &init_mm, \
155 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
158 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
159 .time_slice = RR_TIMESLICE, \
160 .nr_cpus_allowed = NR_CPUS, \
162 .tasks = LIST_HEAD_INIT(tsk.tasks), \
163 INIT_PUSHABLE_TASKS(tsk) \
164 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
165 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
166 .real_parent = &tsk, \
168 .children = LIST_HEAD_INIT(tsk.children), \
169 .sibling = LIST_HEAD_INIT(tsk.sibling), \
170 .group_leader = &tsk, \
171 RCU_INIT_POINTER(.real_cred, &init_cred), \
172 RCU_INIT_POINTER(.cred, &init_cred), \
173 .comm = INIT_TASK_COMM, \
174 .thread = INIT_THREAD, \
176 .files = &init_files, \
177 .signal = &init_signals, \
178 .sighand = &init_sighand, \
179 .nsproxy = &init_nsproxy, \
181 .list = LIST_HEAD_INIT(tsk.pending.list), \
184 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
185 .journal_info = NULL, \
186 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
187 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
188 .timer_slack_ns = 50000, /* 50 usec default slack */ \
190 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
191 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
192 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
194 .thread_group = LIST_HEAD_INIT(tsk.thread_group), \
196 INIT_PERF_EVENTS(tsk) \
197 INIT_TRACE_IRQFLAGS \
200 INIT_TRACE_RECURSION \
201 INIT_TASK_RCU_PREEMPT(tsk) \
206 #define INIT_CPU_TIMERS(cpu_timers) \
208 LIST_HEAD_INIT(cpu_timers[0]), \
209 LIST_HEAD_INIT(cpu_timers[1]), \
210 LIST_HEAD_INIT(cpu_timers[2]), \
213 /* Attach to the init_task data structure for proper alignment */
214 #define __init_task_data __attribute__((__section__(".data..init_task")))
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