Release 4.11 arch/s390/include/asm/pgalloc.h

/*
 *  S390 version
 *    Copyright IBM Corp. 1999, 2000
 *    Author(s): Hartmut Penner (hp@de.ibm.com)
 *               Martin Schwidefsky (schwidefsky@de.ibm.com)
 *
 *  Derived from "include/asm-i386/pgalloc.h"
 *    Copyright (C) 1994  Linus Torvalds
 */

#ifndef _S390_PGALLOC_H

#define _S390_PGALLOC_H

#include <linux/threads.h>
#include <linux/gfp.h>
#include <linux/mm.h>

unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);

unsigned long *page_table_alloc(struct mm_struct *);
struct page *page_table_alloc_pgste(struct mm_struct *mm);
void page_table_free(struct mm_struct *, unsigned long *);
void page_table_free_rcu(struct mmu_gather *, unsigned long *, unsigned long);
void page_table_free_pgste(struct page *page);
extern int page_table_allocate_pgste;



static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{
	struct addrtype { char _[256]; };
	int i;

	for (i = 0; i < n; i += 256) {
		*s = val;
		asm volatile(
                        "mvc    8(248,%[s]),0(%[s])\n"
                        : "+m" (*(struct addrtype *) s)
                        : [s] "a" (s));
		s += 256 / sizeof(long);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Michael Holzheu
32
48.48%
1
20.00%
Martin Schwidefsky
29
43.94%
2
40.00%
Gerald Schaefer
4
6.06%
1
20.00%
Linus Torvalds (pre-git)
1
1.52%
1
20.00%
Total
66
100.00%
5
100.00%



static inline void crst_table_init(unsigned long *crst, unsigned long entry)
{
	clear_table(crst, entry, sizeof(unsigned long)*2048);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
20
64.52%
2
50.00%
Linus Torvalds (pre-git)
6
19.35%
1
25.00%
Gerald Schaefer
5
16.13%
1
25.00%
Total
31
100.00%
4
100.00%



static inline unsigned long pgd_entry_type(struct mm_struct *mm)
{
	if (mm->context.asce_limit <= (1UL << 31))
		return _SEGMENT_ENTRY_EMPTY;
	if (mm->context.asce_limit <= (1UL << 42))
		return _REGION3_ENTRY_EMPTY;
	return _REGION2_ENTRY_EMPTY;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
50
100.00%
3
100.00%
Total
50
100.00%
3
100.00%

int crst_table_upgrade(struct mm_struct *);
void crst_table_downgrade(struct mm_struct *);



static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
{
	unsigned long *table = crst_table_alloc(mm);
	if (table)
		crst_table_init(table, _REGION3_ENTRY_EMPTY);
	return (pud_t *) table;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
45
100.00%
2
100.00%
Total
45
100.00%
2
100.00%


#define pud_free(mm, pud) crst_table_free(mm, (unsigned long *) pud)



static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
	unsigned long *table = crst_table_alloc(mm);

	if (!table)
		return NULL;
	crst_table_init(table, _SEGMENT_ENTRY_EMPTY);
	if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
		crst_table_free(mm, table);
		return NULL;
	}
	return (pmd_t *) table;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
58
80.56%
4
66.67%
Gerald Schaefer
14
19.44%
2
33.33%
Total
72
100.00%
6
100.00%



static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
	pgtable_pmd_page_dtor(virt_to_page(pmd));
	crst_table_free(mm, (unsigned long *) pmd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
34
94.44%
2
66.67%
Benjamin Herrenschmidt
2
5.56%
1
33.33%
Total
36
100.00%
3
100.00%



static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
	pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
33
100.00%
3
100.00%
Total
33
100.00%
3
100.00%



static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
	pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
33
100.00%
4
100.00%
Total
33
100.00%
4
100.00%



static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
	unsigned long *table = crst_table_alloc(mm);

	if (!table)
		return NULL;
	if (mm->context.asce_limit == (1UL << 31)) {
		/* Forking a compat process with 2 page table levels */
		if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
			crst_table_free(mm, table);
			return NULL;
		}
	}
	return (pgd_t *) table;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
77
98.72%
6
85.71%
Gerald Schaefer
1
1.28%
1
14.29%
Total
78
100.00%
7
100.00%



static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
	if (mm->context.asce_limit == (1UL << 31))
		pgtable_pmd_page_dtor(virt_to_page(pgd));
	crst_table_free(mm, (unsigned long *) pgd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
48
96.00%
2
66.67%
Benjamin Herrenschmidt
2
4.00%
1
33.33%
Total
50
100.00%
3
100.00%



static inline void pmd_populate(struct mm_struct *mm,
				pmd_t *pmd, pgtable_t pte)
{
	pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
16
50.00%
4
57.14%
Linus Torvalds
12
37.50%
2
28.57%
Linus Torvalds (pre-git)
4
12.50%
1
14.29%
Total
32
100.00%
7
100.00%


#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte)


#define pmd_pgtable(pmd) \
	(pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE)

/*
 * page table entry allocation/free routines.
 */

#define pte_alloc_one_kernel(mm, vmaddr) ((pte_t *) page_table_alloc(mm))

#define pte_alloc_one(mm, vmaddr) ((pte_t *) page_table_alloc(mm))


#define pte_free_kernel(mm, pte) page_table_free(mm, (unsigned long *) pte)

#define pte_free(mm, pte) page_table_free(mm, (unsigned long *) pte)

extern void rcu_table_freelist_finish(void);

#endif /* _S390_PGALLOC_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
593
82.82%
21
72.41%
Linus Torvalds (pre-git)
34
4.75%
1
3.45%
Michael Holzheu
32
4.47%
1
3.45%
Gerald Schaefer
25
3.49%
2
6.90%
Linus Torvalds
21
2.93%
2
6.90%
Benjamin Herrenschmidt
10
1.40%
1
3.45%
Heiko Carstens
1
0.14%
1
3.45%
Total
716
100.00%
29
100.00%
Directory: arch/s390/include/asm

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.