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         .default_kioctx = INIT_KIOCTX(name.default_kioctx, name),       \
  44 }
  45
  46 #define INIT_SIGNALS(sig) {     \
  47         .count          = ATOMIC_INIT(1),               \
  48         .shared_pending = {                             \
  49                 .list = LIST_HEAD_INIT(sig.shared_pending.list),        \
  50                 .signal =  {{0}}}, \
  51 }
  52
  53 #define INIT_SIGHAND(sighand) { \
  54         .count          = ATOMIC_INIT(1),               \
  55         .action         = { {{0,}}, },                  \
  56         .siglock        = SPIN_LOCK_UNLOCKED,           \
  57 }
  58
  59 /*
  60  *  INIT_TASK is used to set up the first task table, touch at
  61  * your own risk!. Base=0, limit=0x1fffff (=2MB)
  62  */
  63 #define INIT_TASK(tsk)  \
  64 {                                                                       \
  65         .state          = 0,                                            \
  66         .thread_info    = &init_thread_info,                            \
  67         .usage          = ATOMIC_INIT(2),                               \
  68         .flags          = 0,                                            \
  69         .lock_depth     = -1,                                           \
  70         .prio           = MAX_PRIO-20,                                  \
  71         .static_prio    = MAX_PRIO-20,                                  \
  72         .policy         = SCHED_NORMAL,                                 \
  73         .cpus_allowed   = CPU_MASK_ALL,                                 \
  74         .mm             = NULL,                                         \
  75         .active_mm      = &init_mm,                                     \
  76         .run_list       = LIST_HEAD_INIT(tsk.run_list),                 \
  77         .time_slice     = HZ,                                           \
  78         .tasks          = LIST_HEAD_INIT(tsk.tasks),                    \
  79         .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),          \
  80         .ptrace_list    = LIST_HEAD_INIT(tsk.ptrace_list),              \
  81         .real_parent    = &tsk,                                         \
  82         .parent         = &tsk,                                         \
  83         .children       = LIST_HEAD_INIT(tsk.children),                 \
  84         .sibling        = LIST_HEAD_INIT(tsk.sibling),                  \
  85         .group_leader   = &tsk,                                         \
  86         .wait_chldexit  = __WAIT_QUEUE_HEAD_INITIALIZER(tsk.wait_chldexit),\
  87         .real_timer     = {                                             \
  88                 .function       = it_real_fn                            \
  89         },                                                              \
  90         .cap_effective  = CAP_INIT_EFF_SET,                             \
  91         .cap_inheritable = CAP_INIT_INH_SET,                            \
  92         .cap_permitted  = CAP_FULL_SET,                                 \
  93         .keep_capabilities = 0,                                         \
  94         .rlim           = INIT_RLIMITS,                                 \
  95         .user           = INIT_USER,                                    \
  96         .comm           = "swapper",                                    \
  97         .thread         = INIT_THREAD,                                  \
  98         .fs             = &init_fs,                                     \
  99         .files          = &init_files,                                  \
 100         .signal         = &init_signals,                                \
 101         .sighand        = &init_sighand,                                \
 102         .pending        = {                                             \
 103                 .list = LIST_HEAD_INIT(tsk.pending.list),               \
 104                 .signal = {{0}}},                                       \
 105         .blocked        = {{0}},                                        \
 106         .posix_timers    = LIST_HEAD_INIT(tsk.posix_timers),            \
 107         .alloc_lock     = SPIN_LOCK_UNLOCKED,                           \
 108         .proc_lock      = SPIN_LOCK_UNLOCKED,                           \
 109         .switch_lock    = SPIN_LOCK_UNLOCKED,                           \
 110         .journal_info   = NULL,                                         \
 111 }
 112
 113
 114
 115 #endif