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<linux/sunrpc/svcauth.h>: Define hash_str() in terms of hashlen_string()
[linux-2.6-block.git] / include / linux / init_task.h
CommitLineData
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 25extern struct files_struct init_files;
18d8fda7 26extern 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 63extern 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
72extern 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		 131extern struct cred init_cred;
132
8323f26c
PZ		 133extern 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
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