mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
67 lines
2.4 KiB
Plaintext
67 lines
2.4 KiB
Plaintext
# x86 specific tunables.
|
|
# Copyright (C) 2017-2021 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/>.
|
|
|
|
glibc {
|
|
cpu {
|
|
hwcaps {
|
|
type: STRING
|
|
}
|
|
x86_ibt {
|
|
type: STRING
|
|
}
|
|
x86_shstk {
|
|
type: STRING
|
|
}
|
|
x86_non_temporal_threshold {
|
|
type: SIZE_T
|
|
}
|
|
x86_rep_movsb_threshold {
|
|
type: SIZE_T
|
|
# Since there is overhead to set up REP MOVSB operation, REP MOVSB
|
|
# isn't faster on short data. The memcpy micro benchmark in glibc
|
|
# shows that 2KB is the approximate value above which REP MOVSB
|
|
# becomes faster than SSE2 optimization on processors with Enhanced
|
|
# REP MOVSB. Since larger register size can move more data with a
|
|
# single load and store, the threshold is higher with larger register
|
|
# size. Note: Since the REP MOVSB threshold must be greater than 8
|
|
# times of vector size and the default value is 2048 * (vector size
|
|
# / 16), the default value and the minimum value must be updated at
|
|
# run-time. NB: Don't set the default value since we can't tell if
|
|
# the tunable value is set by user or not [BZ #27069].
|
|
minval: 1
|
|
}
|
|
x86_rep_stosb_threshold {
|
|
type: SIZE_T
|
|
# Since there is overhead to set up REP STOSB operation, REP STOSB
|
|
# isn't faster on short data. The memset micro benchmark in glibc
|
|
# shows that 2KB is the approximate value above which REP STOSB
|
|
# becomes faster on processors with Enhanced REP STOSB. Since the
|
|
# stored value is fixed, larger register size has minimal impact
|
|
# on threshold.
|
|
minval: 1
|
|
default: 2048
|
|
}
|
|
x86_data_cache_size {
|
|
type: SIZE_T
|
|
}
|
|
x86_shared_cache_size {
|
|
type: SIZE_T
|
|
}
|
|
}
|
|
}
|