Commit 0a4ccc99 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

s390/mm: move kernel_page_present/kernel_map_pages to page_attr.c 



Keep related functions together and move to appropriate file.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 6b70a920

arch/s390/mm/init.c

+0 −28
Original line number Diff line number Diff line
@@ -158,34 +158,6 @@ void __init mem_init(void) 
	       PFN_ALIGN((unsigned long)&_eshared) - 1);

}



#ifdef CONFIG_DEBUG_PAGEALLOC

void kernel_map_pages(struct page *page, int numpages, int enable)

{

	pgd_t *pgd;

	pud_t *pud;

	pmd_t *pmd;

	pte_t *pte;

	unsigned long address;

	int i;



	for (i = 0; i < numpages; i++) {

		address = page_to_phys(page + i);

		pgd = pgd_offset_k(address);

		pud = pud_offset(pgd, address);

		pmd = pmd_offset(pud, address);

		pte = pte_offset_kernel(pmd, address);

		if (!enable) {

			__ptep_ipte(address, pte);

			pte_val(*pte) = _PAGE_TYPE_EMPTY;

			continue;

		}

		*pte = mk_pte_phys(address, __pgprot(_PAGE_TYPE_RW));

		/* Flush cpu write queue. */

		mb();

	}

}

#endif



void free_init_pages(char *what, unsigned long begin, unsigned long end)

{

	unsigned long addr = begin;

arch/s390/mm/pageattr.c

+43 −0
Original line number Diff line number Diff line
@@ -105,3 +105,46 @@ int set_memory_x(unsigned long addr, int numpages) 
{

	return 0;

}



#ifdef CONFIG_DEBUG_PAGEALLOC

void kernel_map_pages(struct page *page, int numpages, int enable)

{

	unsigned long address;

	pgd_t *pgd;

	pud_t *pud;

	pmd_t *pmd;

	pte_t *pte;

	int i;



	for (i = 0; i < numpages; i++) {

		address = page_to_phys(page + i);

		pgd = pgd_offset_k(address);

		pud = pud_offset(pgd, address);

		pmd = pmd_offset(pud, address);

		pte = pte_offset_kernel(pmd, address);

		if (!enable) {

			__ptep_ipte(address, pte);

			pte_val(*pte) = _PAGE_TYPE_EMPTY;

			continue;

		}

		*pte = mk_pte_phys(address, __pgprot(_PAGE_TYPE_RW));

	}

}



#ifdef CONFIG_HIBERNATION

bool kernel_page_present(struct page *page)

{

	unsigned long addr;

	int cc;



	addr = page_to_phys(page);

	asm volatile(

		"	lra	%1,0(%1)\n"

		"	ipm	%0\n"

		"	srl	%0,28"

		: "=d" (cc), "+a" (addr) : : "cc");

	return cc == 0;

}

#endif /* CONFIG_HIBERNATION */



#endif /* CONFIG_DEBUG_PAGEALLOC */

arch/s390/mm/pgtable.c

+0 −16
Original line number Diff line number Diff line
@@ -881,22 +881,6 @@ int s390_enable_sie(void) 
}

EXPORT_SYMBOL_GPL(s390_enable_sie);



#if defined(CONFIG_DEBUG_PAGEALLOC) && defined(CONFIG_HIBERNATION)

bool kernel_page_present(struct page *page)

{

	unsigned long addr;

	int cc;



	addr = page_to_phys(page);

	asm volatile(

		"	lra	%1,0(%1)\n"

		"	ipm	%0\n"

		"	srl	%0,28"

		: "=d" (cc), "+a" (addr) : : "cc");

	return cc == 0;

}

#endif /* CONFIG_HIBERNATION && CONFIG_DEBUG_PAGEALLOC */



#ifdef CONFIG_TRANSPARENT_HUGEPAGE

int pmdp_clear_flush_young(struct vm_area_struct *vma, unsigned long address,

			   pmd_t *pmdp)