Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 447 deletions

diff --git a/ANDROID_3.4.5/arch/x86/mm/pgtable.c b/ANDROID_3.4.5/arch/x86/mm/pgtable.c
deleted file mode 100644
index 8573b83a..00000000
--- a/ANDROID_3.4.5/arch/x86/mm/pgtable.c
+++ /dev/null
@@ -1,447 +0,0 @@
-#include <linux/mm.h>
-#include <linux/gfp.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/tlb.h>
-#include <asm/fixmap.h>
-
-#define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO
-
-#ifdef CONFIG_HIGHPTE
-#define PGALLOC_USER_GFP __GFP_HIGHMEM
-#else
-#define PGALLOC_USER_GFP 0
-#endif
-
-gfp_t __userpte_alloc_gfp = PGALLOC_GFP | PGALLOC_USER_GFP;
-
-pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
-	return (pte_t *)__get_free_page(PGALLOC_GFP);
-}
-
-pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
-	struct page *pte;
-
-	pte = alloc_pages(__userpte_alloc_gfp, 0);
-	if (pte)
-		pgtable_page_ctor(pte);
-	return pte;
-}
-
-static int __init setup_userpte(char *arg)
-{
-	if (!arg)
-		return -EINVAL;
-
-	/*
-	 * "userpte=nohigh" disables allocation of user pagetables in
-	 * high memory.
-	 */
-	if (strcmp(arg, "nohigh") == 0)
-		__userpte_alloc_gfp &= ~__GFP_HIGHMEM;
-	else
-		return -EINVAL;
-	return 0;
-}
-early_param("userpte", setup_userpte);
-
-void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
-{
-	pgtable_page_dtor(pte);
-	paravirt_release_pte(page_to_pfn(pte));
-	tlb_remove_page(tlb, pte);
-}
-
-#if PAGETABLE_LEVELS > 2
-void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
-{
-	paravirt_release_pmd(__pa(pmd) >> PAGE_SHIFT);
-	tlb_remove_page(tlb, virt_to_page(pmd));
-}
-
-#if PAGETABLE_LEVELS > 3
-void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud)
-{
-	paravirt_release_pud(__pa(pud) >> PAGE_SHIFT);
-	tlb_remove_page(tlb, virt_to_page(pud));
-}
-#endif	/* PAGETABLE_LEVELS > 3 */
-#endif	/* PAGETABLE_LEVELS > 2 */
-
-static inline void pgd_list_add(pgd_t *pgd)
-{
-	struct page *page = virt_to_page(pgd);
-
-	list_add(&page->lru, &pgd_list);
-}
-
-static inline void pgd_list_del(pgd_t *pgd)
-{
-	struct page *page = virt_to_page(pgd);
-
-	list_del(&page->lru);
-}
-
-#define UNSHARED_PTRS_PER_PGD				\
-	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
-
-
-static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm)
-{
-	BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm));
-	virt_to_page(pgd)->index = (pgoff_t)mm;
-}
-
-struct mm_struct *pgd_page_get_mm(struct page *page)
-{
-	return (struct mm_struct *)page->index;
-}
-
-static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd)
-{
-	/* If the pgd points to a shared pagetable level (either the
-	   ptes in non-PAE, or shared PMD in PAE), then just copy the
-	   references from swapper_pg_dir. */
-	if (PAGETABLE_LEVELS == 2 ||
-	    (PAGETABLE_LEVELS == 3 && SHARED_KERNEL_PMD) ||
-	    PAGETABLE_LEVELS == 4) {
-		clone_pgd_range(pgd + KERNEL_PGD_BOUNDARY,
-				swapper_pg_dir + KERNEL_PGD_BOUNDARY,
-				KERNEL_PGD_PTRS);
-	}
-
-	/* list required to sync kernel mapping updates */
-	if (!SHARED_KERNEL_PMD) {
-		pgd_set_mm(pgd, mm);
-		pgd_list_add(pgd);
-	}
-}
-
-static void pgd_dtor(pgd_t *pgd)
-{
-	if (SHARED_KERNEL_PMD)
-		return;
-
-	spin_lock(&pgd_lock);
-	pgd_list_del(pgd);
-	spin_unlock(&pgd_lock);
-}
-
-/*
- * List of all pgd's needed for non-PAE so it can invalidate entries
- * in both cached and uncached pgd's; not needed for PAE since the
- * kernel pmd is shared. If PAE were not to share the pmd a similar
- * tactic would be needed. This is essentially codepath-based locking
- * against pageattr.c; it is the unique case in which a valid change
- * of kernel pagetables can't be lazily synchronized by vmalloc faults.
- * vmalloc faults work because attached pagetables are never freed.
- * -- wli
- */
-
-#ifdef CONFIG_X86_PAE
-/*
- * In PAE mode, we need to do a cr3 reload (=tlb flush) when
- * updating the top-level pagetable entries to guarantee the
- * processor notices the update.  Since this is expensive, and
- * all 4 top-level entries are used almost immediately in a
- * new process's life, we just pre-populate them here.
- *
- * Also, if we're in a paravirt environment where the kernel pmd is
- * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate
- * and initialize the kernel pmds here.
- */
-#define PREALLOCATED_PMDS	UNSHARED_PTRS_PER_PGD
-
-void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
-{
-	paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
-
-	/* Note: almost everything apart from _PAGE_PRESENT is
-	   reserved at the pmd (PDPT) level. */
-	set_pud(pudp, __pud(__pa(pmd) | _PAGE_PRESENT));
-
-	/*
-	 * According to Intel App note "TLBs, Paging-Structure Caches,
-	 * and Their Invalidation", April 2007, document 317080-001,
-	 * section 8.1: in PAE mode we explicitly have to flush the
-	 * TLB via cr3 if the top-level pgd is changed...
-	 */
-	flush_tlb_mm(mm);
-}
-#else  /* !CONFIG_X86_PAE */
-
-/* No need to prepopulate any pagetable entries in non-PAE modes. */
-#define PREALLOCATED_PMDS	0
-
-#endif	/* CONFIG_X86_PAE */
-
-static void free_pmds(pmd_t *pmds[])
-{
-	int i;
-
-	for(i = 0; i < PREALLOCATED_PMDS; i++)
-		if (pmds[i])
-			free_page((unsigned long)pmds[i]);
-}
-
-static int preallocate_pmds(pmd_t *pmds[])
-{
-	int i;
-	bool failed = false;
-
-	for(i = 0; i < PREALLOCATED_PMDS; i++) {
-		pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP);
-		if (pmd == NULL)
-			failed = true;
-		pmds[i] = pmd;
-	}
-
-	if (failed) {
-		free_pmds(pmds);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-/*
- * Mop up any pmd pages which may still be attached to the pgd.
- * Normally they will be freed by munmap/exit_mmap, but any pmd we
- * preallocate which never got a corresponding vma will need to be
- * freed manually.
- */
-static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
-{
-	int i;
-
-	for(i = 0; i < PREALLOCATED_PMDS; i++) {
-		pgd_t pgd = pgdp[i];
-
-		if (pgd_val(pgd) != 0) {
-			pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd);
-
-			pgdp[i] = native_make_pgd(0);
-
-			paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT);
-			pmd_free(mm, pmd);
-		}
-	}
-}
-
-static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[])
-{
-	pud_t *pud;
-	unsigned long addr;
-	int i;
-
-	if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */
-		return;
-
-	pud = pud_offset(pgd, 0);
-
- 	for (addr = i = 0; i < PREALLOCATED_PMDS;
-	     i++, pud++, addr += PUD_SIZE) {
-		pmd_t *pmd = pmds[i];
-
-		if (i >= KERNEL_PGD_BOUNDARY)
-			memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
-			       sizeof(pmd_t) * PTRS_PER_PMD);
-
-		pud_populate(mm, pud, pmd);
-	}
-}
-
-pgd_t *pgd_alloc(struct mm_struct *mm)
-{
-	pgd_t *pgd;
-	pmd_t *pmds[PREALLOCATED_PMDS];
-
-	pgd = (pgd_t *)__get_free_page(PGALLOC_GFP);
-
-	if (pgd == NULL)
-		goto out;
-
-	mm->pgd = pgd;
-
-	if (preallocate_pmds(pmds) != 0)
-		goto out_free_pgd;
-
-	if (paravirt_pgd_alloc(mm) != 0)
-		goto out_free_pmds;
-
-	/*
-	 * Make sure that pre-populating the pmds is atomic with
-	 * respect to anything walking the pgd_list, so that they
-	 * never see a partially populated pgd.
-	 */
-	spin_lock(&pgd_lock);
-
-	pgd_ctor(mm, pgd);
-	pgd_prepopulate_pmd(mm, pgd, pmds);
-
-	spin_unlock(&pgd_lock);
-
-	return pgd;
-
-out_free_pmds:
-	free_pmds(pmds);
-out_free_pgd:
-	free_page((unsigned long)pgd);
-out:
-	return NULL;
-}
-
-void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
-	pgd_mop_up_pmds(mm, pgd);
-	pgd_dtor(pgd);
-	paravirt_pgd_free(mm, pgd);
-	free_page((unsigned long)pgd);
-}
-
-int ptep_set_access_flags(struct vm_area_struct *vma,
-			  unsigned long address, pte_t *ptep,
-			  pte_t entry, int dirty)
-{
-	int changed = !pte_same(*ptep, entry);
-
-	if (changed && dirty) {
-		*ptep = entry;
-		pte_update_defer(vma->vm_mm, address, ptep);
-		flush_tlb_page(vma, address);
-	}
-
-	return changed;
-}
-
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-int pmdp_set_access_flags(struct vm_area_struct *vma,
-			  unsigned long address, pmd_t *pmdp,
-			  pmd_t entry, int dirty)
-{
-	int changed = !pmd_same(*pmdp, entry);
-
-	VM_BUG_ON(address & ~HPAGE_PMD_MASK);
-
-	if (changed && dirty) {
-		*pmdp = entry;
-		pmd_update_defer(vma->vm_mm, address, pmdp);
-		flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
-	}
-
-	return changed;
-}
-#endif
-
-int ptep_test_and_clear_young(struct vm_area_struct *vma,
-			      unsigned long addr, pte_t *ptep)
-{
-	int ret = 0;
-
-	if (pte_young(*ptep))
-		ret = test_and_clear_bit(_PAGE_BIT_ACCESSED,
-					 (unsigned long *) &ptep->pte);
-
-	if (ret)
-		pte_update(vma->vm_mm, addr, ptep);
-
-	return ret;
-}
-
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-int pmdp_test_and_clear_young(struct vm_area_struct *vma,
-			      unsigned long addr, pmd_t *pmdp)
-{
-	int ret = 0;
-
-	if (pmd_young(*pmdp))
-		ret = test_and_clear_bit(_PAGE_BIT_ACCESSED,
-					 (unsigned long *)pmdp);
-
-	if (ret)
-		pmd_update(vma->vm_mm, addr, pmdp);
-
-	return ret;
-}
-#endif
-
-int ptep_clear_flush_young(struct vm_area_struct *vma,
-			   unsigned long address, pte_t *ptep)
-{
-	int young;
-
-	young = ptep_test_and_clear_young(vma, address, ptep);
-	if (young)
-		flush_tlb_page(vma, address);
-
-	return young;
-}
-
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-int pmdp_clear_flush_young(struct vm_area_struct *vma,
-			   unsigned long address, pmd_t *pmdp)
-{
-	int young;
-
-	VM_BUG_ON(address & ~HPAGE_PMD_MASK);
-
-	young = pmdp_test_and_clear_young(vma, address, pmdp);
-	if (young)
-		flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
-
-	return young;
-}
-
-void pmdp_splitting_flush(struct vm_area_struct *vma,
-			  unsigned long address, pmd_t *pmdp)
-{
-	int set;
-	VM_BUG_ON(address & ~HPAGE_PMD_MASK);
-	set = !test_and_set_bit(_PAGE_BIT_SPLITTING,
-				(unsigned long *)pmdp);
-	if (set) {
-		pmd_update(vma->vm_mm, address, pmdp);
-		/* need tlb flush only to serialize against gup-fast */
-		flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
-	}
-}
-#endif
-
-/**
- * reserve_top_address - reserves a hole in the top of kernel address space
- * @reserve - size of hole to reserve
- *
- * Can be used to relocate the fixmap area and poke a hole in the top
- * of kernel address space to make room for a hypervisor.
- */
-void __init reserve_top_address(unsigned long reserve)
-{
-#ifdef CONFIG_X86_32
-	BUG_ON(fixmaps_set > 0);
-	printk(KERN_INFO "Reserving virtual address space above 0x%08x\n",
-	       (int)-reserve);
-	__FIXADDR_TOP = -reserve - PAGE_SIZE;
-#endif
-}
-
-int fixmaps_set;
-
-void __native_set_fixmap(enum fixed_addresses idx, pte_t pte)
-{
-	unsigned long address = __fix_to_virt(idx);
-
-	if (idx >= __end_of_fixed_addresses) {
-		BUG();
-		return;
-	}
-	set_pte_vaddr(address, pte);
-	fixmaps_set++;
-}
-
-void native_set_fixmap(enum fixed_addresses idx, phys_addr_t phys,
-		       pgprot_t flags)
-{
-	__native_set_fixmap(idx, pfn_pte(phys >> PAGE_SHIFT, flags));
-}