include/linux/init_task.h

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