linux/arch/x86/mm/hugetlbpage.c

// SPDX-License-Identifier: GPL-2.0
/*
 * IA-32 Huge TLB Page Support for Kernel.
 *
 * Copyright (C) 2002, Rohit Seth <[email protected]>
 */

#include <linux/init.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/sched/mm.h>
#include <linux/hugetlb.h>
#include <linux/pagemap.h>
#include <linux/err.h>
#include <linux/sysctl.h>
#include <linux/compat.h>
#include <asm/mman.h>
#include <asm/tlb.h>
#include <asm/tlbflush.h>
#include <asm/elf.h>

#ifdef CONFIG_HUGETLB_PAGE
static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
		unsigned long addr, unsigned long len,
		unsigned long pgoff, unsigned long flags)
{ … }

static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
		unsigned long addr, unsigned long len,
		unsigned long pgoff, unsigned long flags)
{ … }

unsigned long
hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
		unsigned long len, unsigned long pgoff, unsigned long flags)
{ … }
#endif /* CONFIG_HUGETLB_PAGE */

#ifdef CONFIG_X86_64
bool __init arch_hugetlb_valid_size(unsigned long size)
{ … }

#ifdef CONFIG_CONTIG_ALLOC
static __init int gigantic_pages_init(void)
{ … }
arch_initcall(gigantic_pages_init);
#endif
#endif