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#!/usr/bin/env python3
#
# Copyright (C) VyOS Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
import argparse
from vyos.vpp.utils import (
get_hugepage_sizes,
get_default_hugepage_size,
get_default_page_size,
bytes_to_human_memory,
)
def get_default_page_sizes() -> list[int]:
"""
Retrieve the system's default page sizes, including huge pages.
:return: A list of page sizes in bytes.
"""
page_sizes = []
# default system page size
page_size = get_default_page_size()
if page_size:
page_sizes.append(page_size)
# default huge page size
page_size = get_default_hugepage_size()
if page_size:
page_sizes.append(page_size)
return page_sizes
def list_mem_page_size(hugepage_only=None) -> list[str]:
result = []
page_sizes = get_hugepage_sizes()
if not hugepage_only:
page_sizes += get_default_page_sizes()
page_sizes = set(page_sizes)
for unit in ['K', 'M', 'G']:
for size in page_sizes:
if val := bytes_to_human_memory(size, unit):
result.append(val)
return result
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument(
'--hugepage_only', type=str, help='List only available hugepage sizes.'
)
args = parser.parse_args()
result = list_mem_page_size(args.hugepage_only)
print(' '.join(result))
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