68ab5f2ab9cdb35bd8249f03b7e3b5b0bc54e443
[linux-2.6.git] / include / linux / init_task.h
1 #ifndef _LINUX__INIT_TASK_H
2 #define _LINUX__INIT_TASK_H
3
4 #include <linux/file.h>
5 #include <linux/rcupdate.h>
6
7 #define INIT_FDTABLE \
8 {                                                       \
9         .max_fds        = NR_OPEN_DEFAULT,              \
10         .max_fdset      = __FD_SETSIZE,                 \
11         .next_fd        = 0,                            \
12         .fd             = &init_files.fd_array[0],      \
13         .close_on_exec  = &init_files.close_on_exec_init, \
14         .open_fds       = &init_files.open_fds_init,    \
15         .rcu            = RCU_HEAD_INIT,                \
16         .free_files     = NULL,                         \
17         .next           = NULL,                         \
18 }
19
20 #define INIT_FILES \
21 {                                                       \
22         .count          = ATOMIC_INIT(1),               \
23         .file_lock      = SPIN_LOCK_UNLOCKED,           \
24         .fdt            = &init_files.fdtab,            \
25         .fdtab          = INIT_FDTABLE,                 \
26         .close_on_exec_init = { { 0, } },               \
27         .open_fds_init  = { { 0, } },                   \
28         .fd_array       = { NULL, }                     \
29 }
30
31 #define INIT_KIOCTX(name, which_mm) \
32 {                                                       \
33         .users          = ATOMIC_INIT(1),               \
34         .dead           = 0,                            \
35         .mm             = &which_mm,                    \
36         .user_id        = 0,                            \
37         .next           = NULL,                         \
38         .wait           = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
39         .ctx_lock       = SPIN_LOCK_UNLOCKED,           \
40         .reqs_active    = 0U,                           \
41         .max_reqs       = ~0U,                          \
42 }
43
44 #define INIT_MM(name) \
45 {                                                               \
46         .mm_rb          = RB_ROOT,                              \
47         .pgd            = swapper_pg_dir,                       \
48         .mm_users       = ATOMIC_INIT(2),                       \
49         .mm_count       = ATOMIC_INIT(1),                       \
50         .mmap_sem       = __RWSEM_INITIALIZER(name.mmap_sem),   \
51         .page_table_lock =  SPIN_LOCK_UNLOCKED,                 \
52         .mmlist         = LIST_HEAD_INIT(name.mmlist),          \
53         .cpu_vm_mask    = CPU_MASK_ALL,                         \
54         .default_kioctx = INIT_KIOCTX(name.default_kioctx, name),       \
55 }
56
57 #define INIT_SIGNALS(sig) {     \
58         .count          = ATOMIC_INIT(1),               \
59         .wait_chldexit  = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
60         .shared_pending = {                             \
61                 .list = LIST_HEAD_INIT(sig.shared_pending.list),        \
62                 .signal =  {{0}}}, \
63         .posix_timers    = LIST_HEAD_INIT(sig.posix_timers),            \
64         .cpu_timers     = INIT_CPU_TIMERS(sig.cpu_timers),              \
65         .rlim           = INIT_RLIMITS,                                 \
66 }
67
68 #define INIT_SIGHAND(sighand) {                                         \
69         .count          = ATOMIC_INIT(1),                               \
70         .action         = { { { .sa_handler = NULL, } }, },             \
71         .siglock        = SPIN_LOCK_UNLOCKED,                           \
72 }
73
74 extern struct group_info init_groups;
75
76 /*
77  *  INIT_TASK is used to set up the first task table, touch at
78  * your own risk!. Base=0, limit=0x1fffff (=2MB)
79  */
80 #define INIT_TASK(tsk)  \
81 {                                                                       \
82         .state          = 0,                                            \
83         .thread_info    = &init_thread_info,                            \
84         .usage          = ATOMIC_INIT(2),                               \
85         .flags          = 0,                                            \
86         .lock_depth     = -1,                                           \
87         .prio           = MAX_PRIO-20,                                  \
88         .static_prio    = MAX_PRIO-20,                                  \
89         .policy         = SCHED_NORMAL,                                 \
90         .cpus_allowed   = CPU_MASK_ALL,                                 \
91         .mm             = NULL,                                         \
92         .active_mm      = &init_mm,                                     \
93         .run_list       = LIST_HEAD_INIT(tsk.run_list),                 \
94         .ioprio         = 0,                                            \
95         .time_slice     = HZ,                                           \
96         .tasks          = LIST_HEAD_INIT(tsk.tasks),                    \
97         .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),          \
98         .ptrace_list    = LIST_HEAD_INIT(tsk.ptrace_list),              \
99         .real_parent    = &tsk,                                         \
100         .parent         = &tsk,                                         \
101         .children       = LIST_HEAD_INIT(tsk.children),                 \
102         .sibling        = LIST_HEAD_INIT(tsk.sibling),                  \
103         .group_leader   = &tsk,                                         \
104         .group_info     = &init_groups,                                 \
105         .cap_effective  = CAP_INIT_EFF_SET,                             \
106         .cap_inheritable = CAP_INIT_INH_SET,                            \
107         .cap_permitted  = CAP_FULL_SET,                                 \
108         .keep_capabilities = 0,                                         \
109         .user           = INIT_USER,                                    \
110         .comm           = "swapper",                                    \
111         .thread         = INIT_THREAD,                                  \
112         .fs             = &init_fs,                                     \
113         .files          = &init_files,                                  \
114         .signal         = &init_signals,                                \
115         .sighand        = &init_sighand,                                \
116         .pending        = {                                             \
117                 .list = LIST_HEAD_INIT(tsk.pending.list),               \
118                 .signal = {{0}}},                                       \
119         .blocked        = {{0}},                                        \
120         .alloc_lock     = SPIN_LOCK_UNLOCKED,                           \
121         .proc_lock      = SPIN_LOCK_UNLOCKED,                           \
122         .journal_info   = NULL,                                         \
123         .cpu_timers     = INIT_CPU_TIMERS(tsk.cpu_timers),              \
124         .fs_excl        = ATOMIC_INIT(0),                               \
125 }
126
127
128 #define INIT_CPU_TIMERS(cpu_timers)                                     \
129 {                                                                       \
130         LIST_HEAD_INIT(cpu_timers[0]),                                  \
131         LIST_HEAD_INIT(cpu_timers[1]),                                  \
132         LIST_HEAD_INIT(cpu_timers[2]),                                  \
133 }
134
135
136 #endif