diff options
| 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 /nptl | |
| parent | bc4a86fa214fe78f568f6959f29a53d3927a809e (diff) | |
Clean up stack-coloring macros.
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/allocatestack.c | 1 | ||||
| -rw-r--r-- | nptl/stack-aliasing.h | 29 |
2 files changed, 30 insertions, 0 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index d0d155c056..9095ef430d 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -30,6 +30,7 @@ #include <list.h> #include <lowlevellock.h> #include <kernel-features.h> +#include <stack-aliasing.h> #ifndef NEED_SEPARATE_REGISTER_STACK diff --git a/nptl/stack-aliasing.h b/nptl/stack-aliasing.h new file mode 100644 index 0000000000..526b54e18f --- /dev/null +++ b/nptl/stack-aliasing.h @@ -0,0 +1,29 @@ +/* Define macros for stack address aliasing issues for NPTL. Stub 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/>. */ + +/* This is a number of bytes (less than a page) by which to "color" the + starting stack address of new threads. This number is multiplied by the + number of threads created so far and then truncated modulo page size, + to get a roughly even distribution of values for different threads. */ +#define COLORING_INCREMENT 0 + +/* This is a number of bytes that is an alignment that should be avoided + when choosing the exact size of a new thread's stack. If the size + chosen is aligned to this, an extra page will be added to render the + size off-aligned. */ +#define MULTI_PAGE_ALIASING 0 |