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| author | Roland McGrath <roland@hack.frob.com> | 2014-06-20 19:50:16 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@hack.frob.com> | 2014-06-20 19:50:16 -0700 |
| commit | 93a6d0820430bfe3d09695a1376c07abf6d2214f (patch) | |
| tree | 9c807deb1d686bd2e6ff3874f27f9e668a9ed810 /sysdeps/i386 | |
| parent | bc4a86fa214fe78f568f6959f29a53d3927a809e (diff) | |
| download | glibc-93a6d0820430bfe3d09695a1376c07abf6d2214f.tar.gz | |
Clean up stack-coloring macros.
Diffstat (limited to 'sysdeps/i386')
| -rw-r--r-- | sysdeps/i386/i686/nptl/Makefile | 31 | ||||
| -rw-r--r-- | sysdeps/i386/i686/stack-aliasing.h | 28 |
2 files changed, 28 insertions, 31 deletions
diff --git a/sysdeps/i386/i686/nptl/Makefile b/sysdeps/i386/i686/nptl/Makefile deleted file mode 100644 index 8f42463a9b..0000000000 --- a/sysdeps/i386/i686/nptl/Makefile +++ /dev/null @@ -1,31 +0,0 @@ -# Copyright (C) 2003-2014 Free Software Foundation, Inc. -# This file is part of the GNU C Library. -# Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. - -# 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 -# <http://www.gnu.org/licenses/>. - -ifeq ($(subdir),nptl) -# It turns out that stack coloring is in general not good on P4s. Some -# applications will benefit. We will probably have a configuration option -# at some point. Enabling coloring can be done with -# -# -DCOLORING_INCREMENT=128 -# -# What is useful is to avoid the 64k aliasing problem which reliably -# happens if all stacks use sizes which are a multiple of 64k. Tell -# the stack allocator to disturb this by allocation one more page if -# necessary. -CFLAGS-pthread_create.c += -DMULTI_PAGE_ALIASING=65536 -endif diff --git a/sysdeps/i386/i686/stack-aliasing.h b/sysdeps/i386/i686/stack-aliasing.h new file mode 100644 index 0000000000..1e35ceb206 --- /dev/null +++ b/sysdeps/i386/i686/stack-aliasing.h @@ -0,0 +1,28 @@ +/* Define macros for stack address aliasing issues for NPTL. i686 version. + Copyright (C) 2014 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 + <http://www.gnu.org/licenses/>. */ + +/* It turns out that stack coloring is in general not good on P4s. Some + applications will benefit. We will probably have a configuration option + at some point. To enable coloring, set this to 128. */ +#define COLORING_INCREMENT 0 + +/* What is useful is to avoid the 64k aliasing problem which reliably + happens if all stacks use sizes which are a multiple of 64k. Tell + the stack allocator to disturb this by allocation one more page if + necessary. */ +#define MULTI_PAGE_ALIASING 65536 |