Merge branches 'acpi-video', 'device-properties', 'pm-sleep' and 'pm-cpuidle'
[linux-2.6-block.git] / include / linux / init_task.h
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1da177e4
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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
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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 25extern struct files_struct init_files;
18d8fda7 26extern struct fs_struct init_fs;
1da177e4 27
4714d1d3 28#ifdef CONFIG_CGROUPS
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29#define INIT_GROUP_RWSEM(sig) \
30 .group_rwsem = __RWSEM_INITIALIZER(sig.group_rwsem),
4714d1d3 31#else
257058ae 32#define INIT_GROUP_RWSEM(sig)
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33#endif
34
cc9a6c87 35#ifdef CONFIG_CPUSETS
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36#define INIT_CPUSET_SEQ(tsk) \
37 .mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq),
cc9a6c87 38#else
1ca7d67c 39#define INIT_CPUSET_SEQ(tsk)
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40#endif
41
1ec320af 42#define INIT_SIGNALS(sig) { \
b3ac022c 43 .nr_threads = 1, \
0c740d0a 44 .thread_head = LIST_HEAD_INIT(init_task.thread_node), \
1da177e4 45 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
1ec320af 46 .shared_pending = { \
1da177e4 47 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
1ec320af 48 .signal = {{0}}}, \
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49 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
50 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
51 .rlim = INIT_RLIMITS, \
4cd4c1b4 52 .cputimer = { \
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53 .cputime_atomic = INIT_CPUTIME_ATOMIC, \
54 .running = 0, \
4cd4c1b4 55 }, \
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56 .cred_guard_mutex = \
57 __MUTEX_INITIALIZER(sig.cred_guard_mutex), \
257058ae 58 INIT_GROUP_RWSEM(sig) \
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59}
60
ab516013 61extern struct nsproxy init_nsproxy;
ab516013 62
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63#define INIT_SIGHAND(sighand) { \
64 .count = ATOMIC_INIT(1), \
0a14a130 65 .action = { { { .sa_handler = SIG_DFL, } }, }, \
e4d91918 66 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
b8fceee1 67 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
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68}
69
70extern struct group_info init_groups;
71
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72#define INIT_STRUCT_PID { \
73 .count = ATOMIC_INIT(1), \
820e45db 74 .tasks = { \
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75 { .first = NULL }, \
76 { .first = NULL }, \
77 { .first = NULL }, \
820e45db 78 }, \
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79 .level = 0, \
80 .numbers = { { \
81 .nr = 0, \
82 .ns = &init_pid_ns, \
83 .pid_chain = { .next = NULL, .pprev = NULL }, \
84 }, } \
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85}
86
87#define INIT_PID_LINK(type) \
88{ \
89 .node = { \
90 .next = NULL, \
f2001145 91 .pprev = NULL, \
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92 }, \
93 .pid = &init_struct_pid, \
94}
95
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96#ifdef CONFIG_AUDITSYSCALL
97#define INIT_IDS \
e1760bd5 98 .loginuid = INVALID_UID, \
4440e854 99 .sessionid = (unsigned int)-1,
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100#else
101#define INIT_IDS
102#endif
3b7391de 103
28f6569a 104#ifdef CONFIG_PREEMPT_RCU
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105#define INIT_TASK_RCU_TREE_PREEMPT() \
106 .rcu_blocked_node = NULL,
107#else
108#define INIT_TASK_RCU_TREE_PREEMPT(tsk)
109#endif
110#ifdef CONFIG_PREEMPT_RCU
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111#define INIT_TASK_RCU_PREEMPT(tsk) \
112 .rcu_read_lock_nesting = 0, \
1d082fd0 113 .rcu_read_unlock_special.s = 0, \
a57eb940 114 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \
abaa93d9 115 INIT_TASK_RCU_TREE_PREEMPT()
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116#else
117#define INIT_TASK_RCU_PREEMPT(tsk)
118#endif
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119#ifdef CONFIG_TASKS_RCU
120#define INIT_TASK_RCU_TASKS(tsk) \
121 .rcu_tasks_holdout = false, \
122 .rcu_tasks_holdout_list = \
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123 LIST_HEAD_INIT(tsk.rcu_tasks_holdout_list), \
124 .rcu_tasks_idle_cpu = -1,
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125#else
126#define INIT_TASK_RCU_TASKS(tsk)
127#endif
f41d911f 128
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129extern struct cred init_cred;
130
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131extern struct task_group root_task_group;
132
133#ifdef CONFIG_CGROUP_SCHED
134# define INIT_CGROUP_SCHED(tsk) \
135 .sched_task_group = &root_task_group,
136#else
137# define INIT_CGROUP_SCHED(tsk)
138#endif
139
cdd6c482 140#ifdef CONFIG_PERF_EVENTS
8323f26c 141# define INIT_PERF_EVENTS(tsk) \
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142 .perf_event_mutex = \
143 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \
144 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
082ff5a2 145#else
cdd6c482 146# define INIT_PERF_EVENTS(tsk)
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147#endif
148
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149#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
150# define INIT_VTIME(tsk) \
151 .vtime_seqlock = __SEQLOCK_UNLOCKED(tsk.vtime_seqlock), \
152 .vtime_snap = 0, \
153 .vtime_snap_whence = VTIME_SYS,
154#else
155# define INIT_VTIME(tsk)
156#endif
157
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158#define INIT_TASK_COMM "swapper"
159
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160#ifdef CONFIG_RT_MUTEXES
161# define INIT_RT_MUTEXES(tsk) \
162 .pi_waiters = RB_ROOT, \
163 .pi_waiters_leftmost = NULL,
164#else
165# define INIT_RT_MUTEXES(tsk)
166#endif
167
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168#ifdef CONFIG_NUMA_BALANCING
169# define INIT_NUMA_BALANCING(tsk) \
170 .numa_preferred_nid = -1, \
171 .numa_group = NULL, \
172 .numa_faults = NULL,
173#else
174# define INIT_NUMA_BALANCING(tsk)
175#endif
176
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177#ifdef CONFIG_KASAN
178# define INIT_KASAN(tsk) \
179 .kasan_depth = 1,
180#else
181# define INIT_KASAN(tsk)
182#endif
183
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184/*
185 * INIT_TASK is used to set up the first task table, touch at
186 * your own risk!. Base=0, limit=0x1fffff (=2MB)
187 */
188#define INIT_TASK(tsk) \
189{ \
190 .state = 0, \
f7e4217b 191 .stack = &init_thread_info, \
1da177e4 192 .usage = ATOMIC_INIT(2), \
7b34e428 193 .flags = PF_KTHREAD, \
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194 .prio = MAX_PRIO-20, \
195 .static_prio = MAX_PRIO-20, \
b29739f9 196 .normal_prio = MAX_PRIO-20, \
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197 .policy = SCHED_NORMAL, \
198 .cpus_allowed = CPU_MASK_ALL, \
29baa747 199 .nr_cpus_allowed= NR_CPUS, \
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200 .mm = NULL, \
201 .active_mm = &init_mm, \
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202 .restart_block = { \
203 .fn = do_no_restart_syscall, \
204 }, \
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205 .se = { \
206 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
207 }, \
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208 .rt = { \
209 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
de5bdff7 210 .time_slice = RR_TIMESLICE, \
6f505b16 211 }, \
1da177e4 212 .tasks = LIST_HEAD_INIT(tsk.tasks), \
806c09a7 213 INIT_PUSHABLE_TASKS(tsk) \
8323f26c 214 INIT_CGROUP_SCHED(tsk) \
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215 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
216 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
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217 .real_parent = &tsk, \
218 .parent = &tsk, \
219 .children = LIST_HEAD_INIT(tsk.children), \
220 .sibling = LIST_HEAD_INIT(tsk.sibling), \
221 .group_leader = &tsk, \
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222 RCU_POINTER_INITIALIZER(real_cred, &init_cred), \
223 RCU_POINTER_INITIALIZER(cred, &init_cred), \
f1c6f1a7 224 .comm = INIT_TASK_COMM, \
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225 .thread = INIT_THREAD, \
226 .fs = &init_fs, \
227 .files = &init_files, \
228 .signal = &init_signals, \
229 .sighand = &init_sighand, \
ab516013 230 .nsproxy = &init_nsproxy, \
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231 .pending = { \
232 .list = LIST_HEAD_INIT(tsk.pending.list), \
233 .signal = {{0}}}, \
234 .blocked = {{0}}, \
e4d91918 235 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
b6e3224f 236 .journal_info = NULL, \
1da177e4 237 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
1d615482 238 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
6976675d 239 .timer_slack_ns = 50000, /* 50 usec default slack */ \
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240 .pids = { \
241 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
242 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
243 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
244 }, \
fa2755e2 245 .thread_group = LIST_HEAD_INIT(tsk.thread_group), \
0c740d0a 246 .thread_node = LIST_HEAD_INIT(init_signals.thread_head), \
bfef93a5 247 INIT_IDS \
cdd6c482 248 INIT_PERF_EVENTS(tsk) \
de30a2b3 249 INIT_TRACE_IRQFLAGS \
fbb9ce95 250 INIT_LOCKDEP \
5ac9f622 251 INIT_FTRACE_GRAPH \
261842b7 252 INIT_TRACE_RECURSION \
f41d911f 253 INIT_TASK_RCU_PREEMPT(tsk) \
8315f422 254 INIT_TASK_RCU_TASKS(tsk) \
1ca7d67c 255 INIT_CPUSET_SEQ(tsk) \
fb00aca4 256 INIT_RT_MUTEXES(tsk) \
6a61671b 257 INIT_VTIME(tsk) \
d8b163c4 258 INIT_NUMA_BALANCING(tsk) \
c420f167 259 INIT_KASAN(tsk) \
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260}
261
262
263#define INIT_CPU_TIMERS(cpu_timers) \
264{ \
265 LIST_HEAD_INIT(cpu_timers[0]), \
266 LIST_HEAD_INIT(cpu_timers[1]), \
267 LIST_HEAD_INIT(cpu_timers[2]), \
268}
269
857eceeb 270/* Attach to the init_task data structure for proper alignment */
2af7687f 271#define __init_task_data __attribute__((__section__(".data..init_task")))
857eceeb 272
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273
274#endif