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 #include <linux/irqflags.h>
   7
   8 #define INIT_FDTABLE \
   9 {                                                       \
  10         .max_fds        = NR_OPEN_DEFAULT,              \
  11         .max_fdset      = EMBEDDED_FD_SET_SIZE,         \
  12         .fd             = &init_files.fd_array[0],      \
  13         .close_on_exec  = (fd_set *)&init_files.close_on_exec_init, \
  14         .open_fds       = (fd_set *)&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         .fdt            = &init_files.fdtab,            \
  24         .fdtab          = INIT_FDTABLE,                 \
  25         .file_lock      = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
  26         .next_fd        = 0,                            \
  27         .close_on_exec_init = { { 0, } },               \
  28         .open_fds_init  = { { 0, } },                   \
  29         .fd_array       = { NULL, }                     \
  30 }
  31
  32 #define INIT_KIOCTX(name, which_mm) \
  33 {                                                       \
  34         .users          = ATOMIC_INIT(1),               \
  35         .dead           = 0,                            \
  36         .mm             = &which_mm,                    \
  37         .user_id        = 0,                            \
  38         .next           = NULL,                         \
  39         .wait           = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
  40         .ctx_lock       = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
  41         .reqs_active    = 0U,                           \
  42         .max_reqs       = ~0U,                          \
  43 }
  44
  45 #define INIT_MM(name) \
  46 {                                                               \
  47         .mm_rb          = RB_ROOT,                              \
  48         .pgd            = swapper_pg_dir,                       \
  49         .mm_users       = ATOMIC_INIT(2),                       \
  50         .mm_count       = ATOMIC_INIT(1),                       \
  51         .mmap_sem       = __RWSEM_INITIALIZER(name.mmap_sem),   \
  52         .page_table_lock =  __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
  53         .mmlist         = LIST_HEAD_INIT(name.mmlist),          \
  54         .cpu_vm_mask    = CPU_MASK_ALL,                         \
  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         .pgrp           = 1,                                            \
  67         .session        = 1,                                            \
  68 }
  69
  70 #define INIT_SIGHAND(sighand) {                                         \
  71         .count          = ATOMIC_INIT(1),                               \
  72         .action         = { { { .sa_handler = NULL, } }, },             \
  73         .siglock        = __SPIN_LOCK_UNLOCKED(sighand.siglock),        \
  74 }
  75
  76 extern struct group_info init_groups;
  77
  78 /*
  79  *  INIT_TASK is used to set up the first task table, touch at
  80  * your own risk!. Base=0, limit=0x1fffff (=2MB)
  81  */
  82 #define INIT_TASK(tsk)  \
  83 {                                                                       \
  84         .state          = 0,                                            \
  85         .thread_info    = &init_thread_info,                            \
  86         .usage          = ATOMIC_INIT(2),                               \
  87         .flags          = 0,                                            \
  88         .lock_depth     = -1,                                           \
  89         .prio           = MAX_PRIO-20,                                  \
  90         .static_prio    = MAX_PRIO-20,                                  \
  91         .normal_prio    = MAX_PRIO-20,                                  \
  92         .policy         = SCHED_NORMAL,                                 \
  93         .cpus_allowed   = CPU_MASK_ALL,                                 \
  94         .mm             = NULL,                                         \
  95         .active_mm      = &init_mm,                                     \
  96         .run_list       = LIST_HEAD_INIT(tsk.run_list),                 \
  97         .ioprio         = 0,                                            \
  98         .time_slice     = HZ,                                           \
  99         .tasks          = LIST_HEAD_INIT(tsk.tasks),                    \
 100         .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),          \
 101         .ptrace_list    = LIST_HEAD_INIT(tsk.ptrace_list),              \
 102         .real_parent    = &tsk,                                         \
 103         .parent         = &tsk,                                         \
 104         .children       = LIST_HEAD_INIT(tsk.children),                 \
 105         .sibling        = LIST_HEAD_INIT(tsk.sibling),                  \
 106         .group_leader   = &tsk,                                         \
 107         .group_info     = &init_groups,                                 \
 108         .cap_effective  = CAP_INIT_EFF_SET,                             \
 109         .cap_inheritable = CAP_INIT_INH_SET,                            \
 110         .cap_permitted  = CAP_FULL_SET,                                 \
 111         .keep_capabilities = 0,                                         \
 112         .user           = INIT_USER,                                    \
 113         .comm           = "swapper",                                    \
 114         .thread         = INIT_THREAD,                                  \
 115         .fs             = &init_fs,                                     \
 116         .files          = &init_files,                                  \
 117         .signal         = &init_signals,                                \
 118         .sighand        = &init_sighand,                                \
 119         .pending        = {                                             \
 120                 .list = LIST_HEAD_INIT(tsk.pending.list),               \
 121                 .signal = {{0}}},                                       \
 122         .blocked        = {{0}},                                        \
 123         .alloc_lock     = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock),         \
 124         .journal_info   = NULL,                                         \
 125         .cpu_timers     = INIT_CPU_TIMERS(tsk.cpu_timers),              \
 126         .fs_excl        = ATOMIC_INIT(0),                               \
 127         .pi_lock        = SPIN_LOCK_UNLOCKED,                           \
 128         INIT_TRACE_IRQFLAGS                                             \
 129 }
 130
 131
 132 #define INIT_CPU_TIMERS(cpu_timers)                                     \
 133 {                                                                       \
 134         LIST_HEAD_INIT(cpu_timers[0]),                                  \
 135         LIST_HEAD_INIT(cpu_timers[1]),                                  \
 136         LIST_HEAD_INIT(cpu_timers[2]),                                  \
 137 }
 138
 139
 140 #endif