arm: Re-enable PI futex support for ARM kernels >= 3.14.3

[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / arm / kernel-features.h

/* Set flags signalling availability of kernel features based on given
   kernel version number.
   Copyright (C) 2006-2014 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/>.  */

/* Support for the recvmmsg syscall was added in 2.6.33.  */
#if __LINUX_KERNEL_VERSION >= 0x020621
# define __ASSUME_RECVMMSG_SYSCALL	1
#endif

/* Support for the accept4 syscall was added in 2.6.36.  */
#if __LINUX_KERNEL_VERSION >= 0x020624
# define __ASSUME_ACCEPT4_SYSCALL	1
#endif

/* Support for the sendmmsg syscall was added in 3.0.  */
#if __LINUX_KERNEL_VERSION >= 0x030000
# define __ASSUME_SENDMMSG_SYSCALL	1
#endif

#include_next <kernel-features.h>

/* The ARM kernel before 3.14.3 may or may not support
   futex_atomic_cmpxchg_inatomic, depending on kernel
   configuration.  */
#if __LINUX_KERNEL_VERSION < 0x030E03
# undef __ASSUME_FUTEX_LOCK_PI
# undef __ASSUME_REQUEUE_PI
# undef __ASSUME_SET_ROBUST_LIST
#endif