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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef EAL_HUGEPAGES_H
#define EAL_HUGEPAGES_H
#include <stddef.h>
#include <stdint.h>
#include <limits.h>
#define MAX_HUGEPAGE_PATH PATH_MAX
/**
* Structure used to store informations about hugepages that we mapped
* through the files in hugetlbfs.
*/
struct hugepage_file {
void *orig_va; /**< virtual addr of first mmap() */
void *final_va; /**< virtual addr of 2nd mmap() */
uint64_t physaddr; /**< physical addr */
size_t size; /**< the page size */
int socket_id; /**< NUMA socket ID */
int file_id; /**< the '%d' in HUGEFILE_FMT */
char filepath[MAX_HUGEPAGE_PATH]; /**< path to backing file on filesystem */
};
/**
* Read the information on what hugepages are available for the EAL to use,
* clearing out any unused ones.
*/
int eal_hugepage_info_init(void);
/**
* Read whatever information primary process has shared about hugepages into
* secondary process.
*/
int eal_hugepage_info_read(void);
#endif /* EAL_HUGEPAGES_H */
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