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# 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
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