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gerrit-public.fairphone.software / kernel / msm-5.4 / d11ed3ab3166a2bfad60681aebf3e13e1c3408a9 / . / init / init_task.c
blob: 7b2436f02dad4907624d52f69854e966e2626dbc [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1// SPDX-License-Identifier: GPL-2.0
Thomas Gleixnera4a2eb42012-05-03 09:02:48 +0000[diff] [blame]2#include <linux/init_task.h>
3#include <linux/export.h>
4#include <linux/mqueue.h>
5#include <linux/sched.h>
Clark Williamscf4aebc22013-02-07 09:46:59 -0600[diff] [blame]6#include <linux/sched/sysctl.h>
Clark Williams8bd75c72013-02-07 09:47:07 -0600[diff] [blame]7#include <linux/sched/rt.h>
Ingo Molnar9164bb42017-02-04 01:20:53 +0100[diff] [blame]8#include <linux/sched/task.h>
Thomas Gleixnera4a2eb42012-05-03 09:02:48 +0000[diff] [blame]9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/mm.h>
12
13#include <asm/pgtable.h>
Linus Torvalds7c0f6ba2016-12-24 11:46:01 -0800[diff] [blame]14#include <linux/uaccess.h>
Thomas Gleixnera4a2eb42012-05-03 09:02:48 +0000[diff] [blame]15
16static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
17static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
18
David Howellsd11ed3a2018-01-02 15:12:01 +0000[diff] [blame^]19
20/*
21 * Set up the first task table, touch at your own risk!. Base=0,
22 * limit=0x1fffff (=2MB)
23 */
David Howells05008712018-01-02 15:12:01 +0000[diff] [blame]24struct task_struct init_task
25#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
26 __init_task_data
27#endif
David Howellsd11ed3a2018-01-02 15:12:01 +0000[diff] [blame^]28= {
29 INIT_TASK_TI(init_task)
30 .state = 0,
31 .stack = init_stack,
32 .usage = ATOMIC_INIT(2),
33 .flags = PF_KTHREAD,
34 .prio = MAX_PRIO-20,
35 .static_prio = MAX_PRIO-20,
36 .normal_prio = MAX_PRIO-20,
37 .policy = SCHED_NORMAL,
38 .cpus_allowed = CPU_MASK_ALL,
39 .nr_cpus_allowed= NR_CPUS,
40 .mm = NULL,
41 .active_mm = &init_mm,
42 .restart_block = {
43 .fn = do_no_restart_syscall,
44 },
45 .se = {
46 .group_node = LIST_HEAD_INIT(init_task.se.group_node),
47 },
48 .rt = {
49 .run_list = LIST_HEAD_INIT(init_task.rt.run_list),
50 .time_slice = RR_TIMESLICE,
51 },
52 .tasks = LIST_HEAD_INIT(init_task.tasks),
53 INIT_PUSHABLE_TASKS(init_task)
54 INIT_CGROUP_SCHED(init_task)
55 .ptraced = LIST_HEAD_INIT(init_task.ptraced),
56 .ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry),
57 .real_parent = &init_task,
58 .parent = &init_task,
59 .children = LIST_HEAD_INIT(init_task.children),
60 .sibling = LIST_HEAD_INIT(init_task.sibling),
61 .group_leader = &init_task,
62 RCU_POINTER_INITIALIZER(real_cred, &init_cred),
63 RCU_POINTER_INITIALIZER(cred, &init_cred),
64 .comm = INIT_TASK_COMM,
65 .thread = INIT_THREAD,
66 .fs = &init_fs,
67 .files = &init_files,
68 .signal = &init_signals,
69 .sighand = &init_sighand,
70 .nsproxy = &init_nsproxy,
71 .pending = {
72 .list = LIST_HEAD_INIT(init_task.pending.list),
73 .signal = {{0}}
74 },
75 .blocked = {{0}},
76 .alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock),
77 .journal_info = NULL,
78 INIT_CPU_TIMERS(init_task)
79 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),
80 .timer_slack_ns = 50000, /* 50 usec default slack */
81 .pids = {
82 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID),
83 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID),
84 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID),
85 },
86 .thread_group = LIST_HEAD_INIT(init_task.thread_group),
87 .thread_node = LIST_HEAD_INIT(init_signals.thread_head),
88 INIT_IDS
89 INIT_PERF_EVENTS(init_task)
90 INIT_TRACE_IRQFLAGS
91 INIT_LOCKDEP
92 INIT_FTRACE_GRAPH
93 INIT_TRACE_RECURSION
94 INIT_TASK_RCU_PREEMPT(init_task)
95 INIT_TASK_RCU_TASKS(init_task)
96 INIT_CPUSET_SEQ(init_task)
97 INIT_RT_MUTEXES(init_task)
98 INIT_PREV_CPUTIME(init_task)
99 INIT_VTIME(init_task)
100 INIT_NUMA_BALANCING(init_task)
101 INIT_KASAN(init_task)
102 INIT_LIVEPATCH(init_task)
103 INIT_TASK_SECURITY
104};
105
Thomas Gleixnera4a2eb42012-05-03 09:02:48 +0000[diff] [blame]106EXPORT_SYMBOL(init_task);
107
108/*
109 * Initial thread structure. Alignment of this is handled by a special
110 * linker map entry.
111 */
Andy Lutomirskic65eacb2016-09-13 14:29:24 -0700[diff] [blame]112#ifndef CONFIG_THREAD_INFO_IN_TASK
David Howells05008712018-01-02 15:12:01 +0000[diff] [blame]113struct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task);
Andy Lutomirskic65eacb2016-09-13 14:29:24 -0700[diff] [blame]114#endif