#include <linux/mm.h>#include <linux/module.h>#include <linux/sched.h>#include <linux/init.h>#include <linux/init_task.h>#include <linux/fs.h>#include <linux/mqueue.h> #include <asm/uaccess.h>#include <asm/pgtable.h>#include <asm/desc.h> static struct signal_struct init_signals = INIT_SIGNALS(init_signals);static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); /* * Initial thread structure. * * We need to make sure that this is THREAD_SIZE aligned due to the * way process stacks are handled. This is done by having a special * "init_task" linker map entry.. */union thread_union init_thread_union __init_task_data =	{ INIT_THREAD_INFO(init_task) }; /* * Initial task structure. * * All other task structs will be allocated on slabs in fork.c */struct task_struct init_task = INIT_TASK(init_task);EXPORT_SYMBOL(init_task); /* * per-CPU TSS segments. Threads are completely 'soft' on Linux, * no more per-task TSS's. The TSS size is kept cacheline-aligned * so they are allowed to end up in the .data..cacheline_aligned * section. Since TSS's are completely CPU-local, we want them * on exact cacheline boundaries, to eliminate cacheline ping-pong. */DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;