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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ASM_POWERPC_PGALLOC_H#define _ASM_POWERPC_PGALLOC_H
#include <linux/mm.h>
#ifndef MODULEstatic 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_defervoid 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 */