From 97f17497d162afdb82c8704bf097f0fee3724b2e Mon Sep 17 00:00:00 2001 From: "C.J. Collier" Date: Tue, 14 Jun 2016 07:50:17 -0700 Subject: Imported Upstream version 16.04 Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757 Signed-off-by: C.J. Collier --- lib/librte_eal/common/eal_hugepages.h | 67 +++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 lib/librte_eal/common/eal_hugepages.h (limited to 'lib/librte_eal/common/eal_hugepages.h') diff --git a/lib/librte_eal/common/eal_hugepages.h b/lib/librte_eal/common/eal_hugepages.h new file mode 100644 index 00000000..38edac03 --- /dev/null +++ b/lib/librte_eal/common/eal_hugepages.h @@ -0,0 +1,67 @@ +/*- + * 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 +#include +#include + +#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 */ -- cgit 1.2.3-korg