blob: 270ff83efc11d8dc27089a3fec085fdec9074b5b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/mm.h>
2#include <linux/module.h>
3#include <linux/sched.h>
4#include <linux/init.h>
5#include <linux/init_task.h>
6#include <linux/fs.h>
7#include <linux/mqueue.h>
8
9#include <asm/uaccess.h>
10#include <asm/pgtable.h>
11#include <asm/desc.h>
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
14static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
16/*
17 * Initial thread structure.
18 *
19 * We need to make sure that this is THREAD_SIZE aligned due to the
20 * way process stacks are handled. This is done by having a special
21 * "init_task" linker map entry..
22 */
Hiroshi Shimamoto77788872007-10-19 20:35:02 +020023union thread_union init_thread_union
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 __attribute__((__section__(".data.init_task"))) =
25 { INIT_THREAD_INFO(init_task) };
26
27/*
28 * Initial task structure.
29 *
30 * All other task structs will be allocated on slabs in fork.c
31 */
32struct task_struct init_task = INIT_TASK(init_task);
Linus Torvalds1da177e2005-04-16 15:20:36 -070033EXPORT_SYMBOL(init_task);
34
35/*
36 * per-CPU TSS segments. Threads are completely 'soft' on Linux,
Hiroshi Shimamoto77788872007-10-19 20:35:02 +020037 * no more per-task TSS's. The TSS size is kept cacheline-aligned
38 * so they are allowed to end up in the .data.cacheline_aligned
39 * section. Since TSS's are completely CPU-local, we want them
40 * on exact cacheline boundaries, to eliminate cacheline ping-pong.
41 */
Fenghua Yuf34e3b62007-07-19 01:48:13 -070042DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;
Linus Torvalds1da177e2005-04-16 15:20:36 -070043