Release 4.11 arch/powerpc/include/asm/nohash/64/pgalloc.h

#ifndef _ASM_POWERPC_PGALLOC_64_H

#define _ASM_POWERPC_PGALLOC_64_H
/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <linux/slab.h>
#include <linux/cpumask.h>
#include <linux/percpu.h>


struct vmemmap_backing {
	
struct vmemmap_backing *list;
	
unsigned long phys;
	
unsigned long virt_addr;
};
extern struct vmemmap_backing *vmemmap_list;

/*
 * Functions that deal with pagetables that could be at any level of
 * the table need to be passed an "index_size" so they know how to
 * handle allocation.  For PTE pages (which are linked to a struct
 * page for now, and drawn from the main get_free_pages() pool), the
 * allocation size will be (2^index_size * sizeof(pointer)) and
 * allocations are drawn from the kmem_cache in PGT_CACHE(index_size).
 *
 * The maximum index size needs to be big enough to allow any
 * pagetable sizes we need, but small enough to fit in the low bits of
 * any page table pointer.  In other words all pagetables, even tiny
 * ones, must be aligned to allow at least enough low 0 bits to
 * contain this value.  This value is also used as a mask, so it must
 * be one less than a power of two.
 */

#define MAX_PGTABLE_INDEX_SIZE	0xf

extern struct kmem_cache *pgtable_cache[];

#define PGT_CACHE(shift) ({                              \
                        BUG_ON(!(shift));               \
                        pgtable_cache[(shift) - 1];     \
                })



static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
	return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE), GFP_KERNEL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Gibson
24
100.00%
2
100.00%
Total
24
100.00%
2
100.00%



static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
	kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Gibson
21
80.77%
2
66.67%
Benjamin Herrenschmidt
5
19.23%
1
33.33%
Total
26
100.00%
3
100.00%

#ifndef CONFIG_PPC_64K_PAGES


#define pgd_populate(MM, PGD, PUD)	pgd_set(PGD, (unsigned long)PUD)



static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
	return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE), GFP_KERNEL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Gibson
28
100.00%
2
100.00%
Total
28
100.00%
2
100.00%



static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
	kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Gibson
21
80.77%
2
66.67%
Benjamin Herrenschmidt
5
19.23%
1
33.33%
Total
26
100.00%
3
100.00%



static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
	pud_set(pud, (unsigned long)pmd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Gibson
27
87.10%
1
50.00%
Aneesh Kumar K.V
4
12.90%
1
50.00%
Total
31
100.00%
2
100.00%



static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
				       pte_t *pte)
{
	pmd_set(pmd, (unsigned long)pte);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
25
80.65%
2
66.67%
David Gibson
6
19.35%
1
33.33%
Total
31
100.00%
3
100.00%



static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
				pgtable_t pte_page)
{
	pmd_set(pmd, (unsigned long)page_address(pte_page));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
27
81.82%
2
66.67%
David Gibson
6
18.18%
1
33.33%
Total
33
100.00%
3
100.00%


#define pmd_pgtable(pmd) pmd_page(pmd)



static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
					  unsigned long address)
{
	return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Gibson
23
79.31%
1
50.00%
Hugh Dickins
6
20.69%
1
50.00%
Total
29
100.00%
2
100.00%



static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
				      unsigned long address)
{
	struct page *page;
	pte_t *pte;

	pte = pte_alloc_one_kernel(mm, address);
	if (!pte)
		return NULL;
	page = virt_to_page(pte);
	if (!pgtable_page_ctor(page)) {
		__free_page(page);
		return NULL;
	}
	return page;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Martin Schwidefsky
27
38.57%
1
25.00%
David Gibson
23
32.86%
1
25.00%
Kirill A. Shutemov
13
18.57%
1
25.00%
Akinobu Mita
7
10.00%
1
25.00%
Total
70
100.00%
4
100.00%



static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
	free_page((unsigned long)pte);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
25
100.00%
1
100.00%
Total
25
100.00%
1
100.00%



static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
{
	pgtable_page_dtor(ptepage);
	__free_page(ptepage);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
25
100.00%
1
100.00%
Total
25
100.00%
1
100.00%

extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift);
#ifdef CONFIG_SMP
extern void __tlb_remove_table(void *_table);
#endif


static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
				  unsigned long address)
{
	tlb_flush_pgtable(tlb, address);
	pgtable_free_tlb(tlb, page_address(table), 0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
34
89.47%
1
50.00%
Hong H. Pham
4
10.53%
1
50.00%
Total
38
100.00%
2
100.00%

#else /* if CONFIG_PPC_64K_PAGES */

extern pte_t *pte_fragment_alloc(struct mm_struct *, unsigned long, int);
extern void pte_fragment_free(unsigned long *, int);
extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift);
#ifdef CONFIG_SMP
extern void __tlb_remove_table(void *_table);
#endif


#define pud_populate(mm, pud, pmd)	pud_set(pud, (unsigned long)pmd)



static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
				       pte_t *pte)
{
	pmd_set(pmd, (unsigned long)pte);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
31
100.00%
2
100.00%
Total
31
100.00%
2
100.00%



static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
				pgtable_t pte_page)
{
	pmd_set(pmd, (unsigned long)pte_page);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
30
100.00%
3
100.00%
Total
30
100.00%
3
100.00%



static inline pgtable_t pmd_pgtable(pmd_t pmd)
{
	return (pgtable_t)(pmd_val(pmd) & ~PMD_MASKED_BITS);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
24
100.00%
3
100.00%
Total
24
100.00%
3
100.00%



static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
					  unsigned long address)
{
	return (pte_t *)pte_fragment_alloc(mm, address, 1);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
31
100.00%
3
100.00%
Total
31
100.00%
3
100.00%



static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
					unsigned long address)
{
	return (pgtable_t)pte_fragment_alloc(mm, address, 0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
29
100.00%
3
100.00%
Total
29
100.00%
3
100.00%



static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
	pte_fragment_free((unsigned long *)pte, 1);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
27
96.43%
2
66.67%
Michael Ellerman
1
3.57%
1
33.33%
Total
28
100.00%
3
100.00%



static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
{
	pte_fragment_free((unsigned long *)ptepage, 0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
27
100.00%
3
100.00%
Total
27
100.00%
3
100.00%



static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
				  unsigned long address)
{
	tlb_flush_pgtable(tlb, address);
	pgtable_free_tlb(tlb, table, 0);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
35
100.00%
2
100.00%
Total
35
100.00%
2
100.00%

#endif /* CONFIG_PPC_64K_PAGES */



static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
	return kmem_cache_alloc(PGT_CACHE(PMD_CACHE_INDEX), GFP_KERNEL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
28
100.00%
2
100.00%
Total
28
100.00%
2
100.00%



static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
	kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), pmd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
26
100.00%
2
100.00%
Total
26
100.00%
2
100.00%


#define __pmd_free_tlb(tlb, pmd, addr)		      \
	pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX)
#ifndef CONFIG_PPC_64K_PAGES

#define __pud_free_tlb(tlb, pud, addr)		      \
	pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE)

#endif /* CONFIG_PPC_64K_PAGES */


#define check_pgt_cache()	do { } while (0)

#endif /* _ASM_POWERPC_PGALLOC_64_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Aneesh Kumar K.V
538
59.91%
8
40.00%
David Gibson
255
28.40%
2
10.00%
Martin Schwidefsky
34
3.79%
1
5.00%
Mark Nelson
18
2.00%
1
5.00%
Benjamin Herrenschmidt
14
1.56%
2
10.00%
Kirill A. Shutemov
13
1.45%
1
5.00%
Hugh Dickins
8
0.89%
1
5.00%
Akinobu Mita
7
0.78%
1
5.00%
Hari Bathini
6
0.67%
1
5.00%
Hong H. Pham
4
0.45%
1
5.00%
Michael Ellerman
1
0.11%
1
5.00%
Total
898
100.00%
20
100.00%
Directory: arch/powerpc/include/asm/nohash/64

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