1#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 13static struct signal_struct init_signals = INIT_SIGNALS(init_signals); 14static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); 15 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 */ 23union thread_union init_thread_union __init_task_data = 24 { INIT_THREAD_INFO(init_task) }; 25 26/* 27 * Initial task structure. 28 * 29 * All other task structs will be allocated on slabs in fork.c 30 */ 31struct task_struct init_task = INIT_TASK(init_task); 32EXPORT_SYMBOL(init_task); 33 34/* 35 * per-CPU TSS segments. Threads are completely 'soft' on Linux, 36 * no more per-task TSS's. The TSS size is kept cacheline-aligned 37 * so they are allowed to end up in the .data..cacheline_aligned 38 * section. Since TSS's are completely CPU-local, we want them 39 * on exact cacheline boundaries, to eliminate cacheline ping-pong. 40 */ 41DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; 42