
  A   	€l–Ь4э( ©і( 	ЕЂfаB¦-яЖѓп3_†I|ҐЏ+a–Эm_J*j"TвЂrаq—”ЕЈЕ ї    	/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */

#ifndef _OBJAGG_H
#define _OBJAGG_H

struct objagg_ops {
	size_t obj_size;
	bool (*delta_check)(void *priv, const void *parent_obj,
			    const void *obj);
	void * (*delta_create)(void *priv, void *parent_obj, void *obj);
	void (*delta_destroy)(void *priv, void *delta_priv);
	void * (*root_create)(void *priv, void *obj, unsigned int root_id);
#define OBJAGG_OBJ_ROOT_ID_INVALID UINT_MAX
	void (*root_destroy)(void *priv, void *root_priv);
};

struct objagg;
struct objagg_obj;
struct objagg_hints;

const void *objagg_obj_root_priv(const struct objagg_obj *objagg_obj);
const void *objagg_obj_delta_priv(const struct objagg_obj *objagg_obj);
const void *objagg_obj_raw(const struct objagg_obj *objagg_obj);

struct objagg_obj *objagg_obj_get(struct objagg *objagg, void *obj);
void objagg_obj_put(struct objagg *objagg, struct objagg_obj *objagg_obj);
struct objagg *objagg_create(const struct objagg_ops *ops,
			     struct objagg_hints *hints, void *priv);
void objagg_destroy(struct objagg *objagg);

struct objagg_obj_stats {
	unsigned int user_count;
	unsigned int delta_user_count; /* includes delta object users */
};

struct objagg_obj_stats_info {
	struct objagg_obj_stats stats;
	struct objagg_obj *objagg_obj; /* associated object */
	bool is_root;
};

struct objagg_stats {
	unsigned int root_count;
	unsigned int stats_info_count;
	struct objagg_obj_stats_info stats_info[];
};

const struct objagg_stats *objagg_stats_get(struct objagg *objagg);
void objagg_stats_put(const struct objagg_stats *objagg_stats);

enum objagg_opt_algo_type {
	OBJAGG_OPT_ALGO_SIMPLE_GREEDY,
};

struct objagg_hints *objagg_hints_get(struct objagg *objagg,
				      enum objagg_opt_algo_type opt_algo_type);
void objagg_hints_put(struct objagg_hints *objagg_hints);
const struct objagg_stats *
objagg_hints_stats_get(struct objagg_hints *objagg_hints);

#endif
     €АИѓm ‡їѕЕ #    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_PGALLOC_H
#define __ASM_GENERIC_PGALLOC_H

#ifdef CONFIG_MMU

#define GFP_PGTABLE_KERNEL	(GFP_KERNEL | __GFP_ZERO)
#define GFP_PGTABLE_USER	(GFP_PGTABLE_KERNEL | __GFP_ACCOUNT)

/**
 * __pte_alloc_one_kernel - allocate memory for a PTE-level kernel page table
 * @mm: the mm_struct of the current context
 *
 * This function is intended for architectures that need
 * anything beyond simple page allocation.
 *
 * Return: pointer to the allocated memory or %NULL on error
 */
static inline pte_t *__pte_alloc_one_kernel(struct mm_struct *mm)
{
	struct ptdesc *ptdesc = pagetable_alloc(GFP_PGTABLE_KERNEL &
			~__GFP_HIGHMEM, 0);

	if (!ptdesc)
		return NULL;
	return ptdesc_address(ptdesc);
}

#ifndef __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
/**
 * pte_alloc_one_kernel - allocate memory for a PTE-level kernel page table
 * @mm: the mm_struct of the current context
 *
 * Return: pointer to the allocated memory or %NULL on error
 */
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
{
	return __pte_alloc_one_kernel(mm);
}
#endif

/**
 * pte_free_kernel - free PTE-level kernel page table memory
 * @mm: the mm_struct of the current context
 * @pte: pointer to the memory containing the page table
 */
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
	pagetable_free(virt_to_ptdesc(pte));
}

/**
 * __pte_alloc_one - allocate memory for a PTE-level user page table
 * @mm: the mm_struct of the current context
 * @gfp: GFP flags to use for the allocation
 *
 * Allocate memory for a page table and ptdesc and runs pagetable_pte_ctor().
 *
 * This function is intended for architectures that need
 * anything beyond simple page allocation or must have custom GFP flags.
 *
 * Return: `struct page` referencing the ptdesc or %NULL on error
 */
static inline pgtable_t __pte_alloc_one(struct mm_struct *mm, gfp_t gfp)
{
	struct ptdesc *ptdesc;

	ptdesc = pagetable_alloc(gfp, 0);
	if (!ptdesc)
		return NULL;