1#ifndef _LINUX__INIT_TASK_H 2#define _LINUX__INIT_TASK_H 3 4#include <linux/rcupdate.h> 5#include <linux/irqflags.h> 6#include <linux/utsname.h> 7#include <linux/lockdep.h> 8#include <linux/ftrace.h> 9#include <linux/ipc.h> 10#include <linux/pid_namespace.h> 11#include <linux/user_namespace.h> 12#include <linux/securebits.h> 13#include <net/net_namespace.h> 14 15#ifdef CONFIG_SMP 16# define INIT_PUSHABLE_TASKS(tsk) \ 17 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), 18#else 19# define INIT_PUSHABLE_TASKS(tsk) 20#endif 21 22extern struct files_struct init_files; 23extern struct fs_struct init_fs; 24 25#ifdef CONFIG_CGROUPS 26#define INIT_GROUP_RWSEM(sig) \ 27 .group_rwsem = __RWSEM_INITIALIZER(sig.group_rwsem), 28#else 29#define INIT_GROUP_RWSEM(sig) 30#endif 31 32#ifdef CONFIG_CPUSETS 33#define INIT_CPUSET_SEQ \ 34 .mems_allowed_seq = SEQCNT_ZERO, 35#else 36#define INIT_CPUSET_SEQ 37#endif 38 39#define INIT_SIGNALS(sig) { \ 40 .nr_threads = 1, \ 41 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ 42 .shared_pending = { \ 43 .list = LIST_HEAD_INIT(sig.shared_pending.list), \ 44 .signal = {{0}}}, \ 45 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ 46 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ 47 .rlim = INIT_RLIMITS, \ 48 .cputimer = { \ 49 .cputime = INIT_CPUTIME, \ 50 .running = 0, \ 51 .lock = __RAW_SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ 52 }, \ 53 .cred_guard_mutex = \ 54 __MUTEX_INITIALIZER(sig.cred_guard_mutex), \ 55 INIT_GROUP_RWSEM(sig) \ 56} 57 58extern struct nsproxy init_nsproxy; 59 60#define INIT_SIGHAND(sighand) { \ 61 .count = ATOMIC_INIT(1), \ 62 .action = { { { .sa_handler = SIG_DFL, } }, }, \ 63 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ 64 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ 65} 66 67extern struct group_info init_groups; 68 69#define INIT_STRUCT_PID { \ 70 .count = ATOMIC_INIT(1), \ 71 .tasks = { \ 72 { .first = NULL }, \ 73 { .first = NULL }, \ 74 { .first = NULL }, \ 75 }, \ 76 .level = 0, \ 77 .numbers = { { \ 78 .nr = 0, \ 79 .ns = &init_pid_ns, \ 80 .pid_chain = { .next = NULL, .pprev = NULL }, \ 81 }, } \ 82} 83 84#define INIT_PID_LINK(type) \ 85{ \ 86 .node = { \ 87 .next = NULL, \ 88 .pprev = NULL, \ 89 }, \ 90 .pid = &init_struct_pid, \ 91} 92 93#ifdef CONFIG_AUDITSYSCALL 94#define INIT_IDS \ 95 .loginuid = -1, \ 96 .sessionid = -1, 97#else 98#define INIT_IDS 99#endif 100 101#ifdef CONFIG_RCU_BOOST 102#define INIT_TASK_RCU_BOOST() \ 103 .rcu_boost_mutex = NULL, 104#else 105#define INIT_TASK_RCU_BOOST() 106#endif 107#ifdef CONFIG_TREE_PREEMPT_RCU 108#define INIT_TASK_RCU_TREE_PREEMPT() \ 109 .rcu_blocked_node = NULL, 110#else 111#define INIT_TASK_RCU_TREE_PREEMPT(tsk) 112#endif 113#ifdef CONFIG_PREEMPT_RCU 114#define INIT_TASK_RCU_PREEMPT(tsk) \ 115 .rcu_read_lock_nesting = 0, \ 116 .rcu_read_unlock_special = 0, \ 117 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ 118 INIT_TASK_RCU_TREE_PREEMPT() \ 119 INIT_TASK_RCU_BOOST() 120#else 121#define INIT_TASK_RCU_PREEMPT(tsk) 122#endif 123 124extern struct cred init_cred; 125 126#ifdef CONFIG_PERF_EVENTS 127# define INIT_PERF_EVENTS(tsk) \ 128 .perf_event_mutex = \ 129 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \ 130 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list), 131#else 132# define INIT_PERF_EVENTS(tsk) 133#endif 134 135#define INIT_TASK_COMM "swapper" 136 137/* 138 * INIT_TASK is used to set up the first task table, touch at 139 * your own risk!. Base=0, limit=0x1fffff (=2MB) 140 */ 141#define INIT_TASK(tsk) \ 142{ \ 143 .state = 0, \ 144 .stack = &init_thread_info, \ 145 .usage = ATOMIC_INIT(2), \ 146 .flags = PF_KTHREAD, \ 147 .prio = MAX_PRIO-20, \ 148 .static_prio = MAX_PRIO-20, \ 149 .normal_prio = MAX_PRIO-20, \ 150 .policy = SCHED_NORMAL, \ 151 .cpus_allowed = CPU_MASK_ALL, \ 152 .mm = NULL, \ 153 .active_mm = &init_mm, \ 154 .se = { \ 155 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ 156 }, \ 157 .rt = { \ 158 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ 159 .time_slice = RR_TIMESLICE, \ 160 .nr_cpus_allowed = NR_CPUS, \ 161 }, \ 162 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 163 INIT_PUSHABLE_TASKS(tsk) \ 164 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ 165 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ 166 .real_parent = &tsk, \ 167 .parent = &tsk, \ 168 .children = LIST_HEAD_INIT(tsk.children), \ 169 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 170 .group_leader = &tsk, \ 171 RCU_INIT_POINTER(.real_cred, &init_cred), \ 172 RCU_INIT_POINTER(.cred, &init_cred), \ 173 .comm = INIT_TASK_COMM, \ 174 .thread = INIT_THREAD, \ 175 .fs = &init_fs, \ 176 .files = &init_files, \ 177 .signal = &init_signals, \ 178 .sighand = &init_sighand, \ 179 .nsproxy = &init_nsproxy, \ 180 .pending = { \ 181 .list = LIST_HEAD_INIT(tsk.pending.list), \ 182 .signal = {{0}}}, \ 183 .blocked = {{0}}, \ 184 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 185 .journal_info = NULL, \ 186 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 187 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ 188 .timer_slack_ns = 50000, /* 50 usec default slack */ \ 189 .pids = { \ 190 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ 191 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ 192 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ 193 }, \ 194 .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ 195 INIT_IDS \ 196 INIT_PERF_EVENTS(tsk) \ 197 INIT_TRACE_IRQFLAGS \ 198 INIT_LOCKDEP \ 199 INIT_FTRACE_GRAPH \ 200 INIT_TRACE_RECURSION \ 201 INIT_TASK_RCU_PREEMPT(tsk) \ 202 INIT_CPUSET_SEQ \ 203} 204 205 206#define INIT_CPU_TIMERS(cpu_timers) \ 207{ \ 208 LIST_HEAD_INIT(cpu_timers[0]), \ 209 LIST_HEAD_INIT(cpu_timers[1]), \ 210 LIST_HEAD_INIT(cpu_timers[2]), \ 211} 212 213/* Attach to the init_task data structure for proper alignment */ 214#define __init_task_data __attribute__((__section__(".data..init_task"))) 215 216 217#endif 218