mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 22:10:13 +00:00
a4c3f5f46e
The patch adds two new macros, TUNABLE_GET_DEFAULT and TUNABLE_IS_INITIALIZED, here the former get the default value with a signature similar to TUNABLE_GET, while the later returns whether the tunable was set by the environment variable. Checked on x86_64-linux-gnu. Reviewed-by: DJ Delorie <dj@redhat.com> Tested-by: Zhangfei Gao <zhangfei.gao@linaro.org>
176 lines
3.2 KiB
Plaintext
176 lines
3.2 KiB
Plaintext
# Copyright (C) 2016-2023 Free Software Foundation, Inc.
|
|
# This file is part of the GNU C Library.
|
|
|
|
# The GNU C 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.
|
|
|
|
# The GNU C 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 the GNU C Library; if not, see
|
|
# <https://www.gnu.org/licenses/>.
|
|
|
|
# Allowed attributes for tunables:
|
|
#
|
|
# type: Defaults to STRING
|
|
# minval: Optional minimum acceptable value
|
|
# maxval: Optional maximum acceptable value
|
|
# default: Optional default value (if not specified it will be 0 or "")
|
|
# env_alias: An alias environment variable
|
|
|
|
glibc {
|
|
malloc {
|
|
check {
|
|
type: INT_32
|
|
minval: 0
|
|
maxval: 3
|
|
env_alias: MALLOC_CHECK_
|
|
}
|
|
top_pad {
|
|
type: SIZE_T
|
|
env_alias: MALLOC_TOP_PAD_
|
|
default: 131072
|
|
}
|
|
perturb {
|
|
type: INT_32
|
|
minval: 0
|
|
maxval: 0xff
|
|
env_alias: MALLOC_PERTURB_
|
|
}
|
|
mmap_threshold {
|
|
type: SIZE_T
|
|
env_alias: MALLOC_MMAP_THRESHOLD_
|
|
}
|
|
trim_threshold {
|
|
type: SIZE_T
|
|
env_alias: MALLOC_TRIM_THRESHOLD_
|
|
}
|
|
mmap_max {
|
|
type: INT_32
|
|
env_alias: MALLOC_MMAP_MAX_
|
|
minval: 0
|
|
}
|
|
arena_max {
|
|
type: SIZE_T
|
|
env_alias: MALLOC_ARENA_MAX
|
|
minval: 1
|
|
}
|
|
arena_test {
|
|
type: SIZE_T
|
|
env_alias: MALLOC_ARENA_TEST
|
|
minval: 1
|
|
}
|
|
tcache_max {
|
|
type: SIZE_T
|
|
}
|
|
tcache_count {
|
|
type: SIZE_T
|
|
}
|
|
tcache_unsorted_limit {
|
|
type: SIZE_T
|
|
}
|
|
mxfast {
|
|
type: SIZE_T
|
|
minval: 0
|
|
}
|
|
hugetlb {
|
|
type: SIZE_T
|
|
minval: 0
|
|
}
|
|
}
|
|
cpu {
|
|
hwcap_mask {
|
|
type: UINT_64
|
|
env_alias: LD_HWCAP_MASK
|
|
default: HWCAP_IMPORTANT
|
|
}
|
|
}
|
|
|
|
elision {
|
|
enable {
|
|
type: INT_32
|
|
minval: 0
|
|
maxval: 1
|
|
}
|
|
skip_lock_busy {
|
|
type: INT_32
|
|
default: 3
|
|
minval: 0
|
|
}
|
|
skip_lock_internal_abort {
|
|
type: INT_32
|
|
default: 3
|
|
minval: 0
|
|
}
|
|
skip_lock_after_retries {
|
|
type: INT_32
|
|
default: 3
|
|
minval: 0
|
|
}
|
|
tries {
|
|
type: INT_32
|
|
default: 3
|
|
minval: 0
|
|
}
|
|
skip_trylock_internal_abort {
|
|
type: INT_32
|
|
default: 3
|
|
minval: 0
|
|
}
|
|
}
|
|
|
|
rtld {
|
|
nns {
|
|
type: SIZE_T
|
|
minval: 1
|
|
maxval: 16
|
|
default: 4
|
|
}
|
|
optional_static_tls {
|
|
type: SIZE_T
|
|
minval: 0
|
|
default: 512
|
|
}
|
|
}
|
|
|
|
mem {
|
|
tagging {
|
|
type: INT_32
|
|
minval: 0
|
|
maxval: 255
|
|
}
|
|
decorate_maps {
|
|
type: INT_32
|
|
minval: 0
|
|
maxval: 1
|
|
}
|
|
}
|
|
|
|
rtld {
|
|
dynamic_sort {
|
|
type: INT_32
|
|
minval: 1
|
|
maxval: 2
|
|
default: 2
|
|
}
|
|
}
|
|
|
|
gmon {
|
|
minarcs {
|
|
type: INT_32
|
|
minval: 50
|
|
default: 50
|
|
}
|
|
maxarcs {
|
|
type: INT_32
|
|
minval: 50
|
|
default: 1048576
|
|
}
|
|
}
|
|
}
|