Contributors: 14
Author Tokens Token Proportion Commits Commit Proportion
Christophe Leroy 51 19.32% 3 10.71%
Balbir Singh 45 17.05% 1 3.57%
David Gibson 39 14.77% 3 10.71%
Aneesh Kumar K.V 33 12.50% 4 14.29%
Anton Blanchard 31 11.74% 5 17.86%
Benjamin Herrenschmidt 19 7.20% 3 10.71%
Hugh Dickins 15 5.68% 2 7.14%
David S. Miller 15 5.68% 1 3.57%
Paul Mackerras 9 3.41% 1 3.57%
Christoph Lameter 2 0.76% 1 3.57%
Kirill A. Shutemov 2 0.76% 1 3.57%
Martin Schwidefsky 1 0.38% 1 3.57%
Alexander (Sasha) Levin 1 0.38% 1 3.57%
Greg Kroah-Hartman 1 0.38% 1 3.57%
Total 264 28


/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_PGALLOC_H
#define _ASM_POWERPC_PGALLOC_H

#include <linux/mm.h>

#ifndef MODULE
static inline gfp_t pgtable_gfp_flags(struct mm_struct *mm, gfp_t gfp)
{
	if (unlikely(mm == &init_mm))
		return gfp;
	return gfp | __GFP_ACCOUNT;
}
#else /* !MODULE */
static inline gfp_t pgtable_gfp_flags(struct mm_struct *mm, gfp_t gfp)
{
	return gfp | __GFP_ACCOUNT;
}
#endif /* MODULE */

#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)

pte_t *pte_fragment_alloc(struct mm_struct *mm, int kernel);

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

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

void pte_frag_destroy(void *pte_frag);
void pte_fragment_free(unsigned long *table, int kernel);

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

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

/* arch use pte_free_defer() implementation in arch/powerpc/mm/pgtable-frag.c */
#define pte_free_defer pte_free_defer
void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable);

/*
 * 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, 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) pgtable_cache[shift]

#ifdef CONFIG_PPC_BOOK3S
#include <asm/book3s/pgalloc.h>
#else
#include <asm/nohash/pgalloc.h>
#endif

#endif /* _ASM_POWERPC_PGALLOC_H */