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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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 */
int memseg_id; /**< the memory segment to which page belongs */
#ifdef RTE_EAL_SINGLE_FILE_SEGMENTS
int repeated; /**< number of times the page size is repeated */
#endif
char filepath[MAX_HUGEPAGE_PATH]; /**< path to backing file on filesystem */
};
/**
* Read the information from linux on what hugepages are available
* for the EAL to use
*/
int eal_hugepage_info_init(void);
#endif /* EAL_HUGEPAGES_H */
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