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 #include <linux/lockdep.h> 8 9 #define INIT_FDTABLE \ 10 { \ 11 .max_fds = NR_OPEN_DEFAULT, \ 12 .max_fdset = EMBEDDED_FD_SET_SIZE, \ 13 .fd = &init_files.fd_array[0], \ 14 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \ 15 .open_fds = (fd_set *)&init_files.open_fds_init, \ 16 .rcu = RCU_HEAD_INIT, \ 17 .free_files = NULL, \ 18 .next = NULL, \ 19 } 20 21 #define INIT_FILES \ 22 { \ 23 .count = ATOMIC_INIT(1), \ 24 .fdt = &init_files.fdtab, \ 25 .fdtab = INIT_FDTABLE, \ 26 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \ 27 .next_fd = 0, \ 28 .close_on_exec_init = { { 0, } }, \ 29 .open_fds_init = { { 0, } }, \ 30 .fd_array = { NULL, } \ 31 } 32 33 #define INIT_KIOCTX(name, which_mm) \ 34 { \ 35 .users = ATOMIC_INIT(1), \ 36 .dead = 0, \ 37 .mm = &which_mm, \ 38 .user_id = 0, \ 39 .next = NULL, \ 40 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \ 41 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \ 42 .reqs_active = 0U, \ 43 .max_reqs = ~0U, \ 44 } 45 46 #define INIT_MM(name) \ 47 { \ 48 .mm_rb = RB_ROOT, \ 49 .pgd = swapper_pg_dir, \ 50 .mm_users = ATOMIC_INIT(2), \ 51 .mm_count = ATOMIC_INIT(1), \ 52 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \ 53 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \ 54 .mmlist = LIST_HEAD_INIT(name.mmlist), \ 55 .cpu_vm_mask = CPU_MASK_ALL, \ 56 } 57 58 #define INIT_SIGNALS(sig) { \ 59 .count = ATOMIC_INIT(1), \ 60 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ 61 .shared_pending = { \ 62 .list = LIST_HEAD_INIT(sig.shared_pending.list), \ 63 .signal = {{0}}}, \ 64 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ 65 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ 66 .rlim = INIT_RLIMITS, \ 67 .pgrp = 1, \ 68 .session = 1, \ 69 } 70 71 #define INIT_SIGHAND(sighand) { \ 72 .count = ATOMIC_INIT(1), \ 73 .action = { { { .sa_handler = NULL, } }, }, \ 74 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ 75 } 76 77 extern struct group_info init_groups; 78 79 /* 80 * INIT_TASK is used to set up the first task table, touch at 81 * your own risk!. Base=0, limit=0x1fffff (=2MB) 82 */ 83 #define INIT_TASK(tsk) \ 84 { \ 85 .state = 0, \ 86 .thread_info = &init_thread_info, \ 87 .usage = ATOMIC_INIT(2), \ 88 .flags = 0, \ 89 .lock_depth = -1, \ 90 .prio = MAX_PRIO-20, \ 91 .static_prio = MAX_PRIO-20, \ 92 .normal_prio = MAX_PRIO-20, \ 93 .policy = SCHED_NORMAL, \ 94 .cpus_allowed = CPU_MASK_ALL, \ 95 .mm = NULL, \ 96 .active_mm = &init_mm, \ 97 .run_list = LIST_HEAD_INIT(tsk.run_list), \ 98 .ioprio = 0, \ 99 .time_slice = HZ, \ 100 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 101 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \ 102 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \ 103 .real_parent = &tsk, \ 104 .parent = &tsk, \ 105 .children = LIST_HEAD_INIT(tsk.children), \ 106 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 107 .group_leader = &tsk, \ 108 .group_info = &init_groups, \ 109 .cap_effective = CAP_INIT_EFF_SET, \ 110 .cap_inheritable = CAP_INIT_INH_SET, \ 111 .cap_permitted = CAP_FULL_SET, \ 112 .keep_capabilities = 0, \ 113 .user = INIT_USER, \ 114 .comm = "swapper", \ 115 .thread = INIT_THREAD, \ 116 .fs = &init_fs, \ 117 .files = &init_files, \ 118 .signal = &init_signals, \ 119 .sighand = &init_sighand, \ 120 .pending = { \ 121 .list = LIST_HEAD_INIT(tsk.pending.list), \ 122 .signal = {{0}}}, \ 123 .blocked = {{0}}, \ 124 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 125 .journal_info = NULL, \ 126 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 127 .fs_excl = ATOMIC_INIT(0), \ 128 .pi_lock = SPIN_LOCK_UNLOCKED, \ 129 INIT_TRACE_IRQFLAGS \ 130 INIT_LOCKDEP \ 131 } 132 133 134 #define INIT_CPU_TIMERS(cpu_timers) \ 135 { \ 136 LIST_HEAD_INIT(cpu_timers[0]), \ 137 LIST_HEAD_INIT(cpu_timers[1]), \ 138 LIST_HEAD_INIT(cpu_timers[2]), \ 139 } 140 141 142 #endif 143