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Re: [PATCH 1/6] Split x86_64 out of main Linux kernel-features.h
- From: Andreas Jaeger <aj at suse dot com>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>, libc-alpha at sourceware dot org
- Date: Thu, 17 Jul 2014 19:33:41 +0200
- Subject: Re: [PATCH 1/6] Split x86_64 out of main Linux kernel-features.h
- Authentication-results: sourceware.org; auth=none
- References: <Pine dot LNX dot 4 dot 64 dot 1406241554410 dot 4217 at digraph dot polyomino dot org dot uk> <Pine dot LNX dot 4 dot 64 dot 1406241558140 dot 4217 at digraph dot polyomino dot org dot uk>
On 06/24/2014 05:58 PM, Joseph S. Myers wrote:
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/x86_64/kernel-features.h
> @@ -0,0 +1,38 @@
> +/* Set flags signalling availability of kernel features based on given
> + kernel version number. x86_64 version.
> + Copyright (C) 1999-2014 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/>. */
> +
> +/* The accept4 syscall was added for x86_64 in 2.6.28. */
> +#define __ASSUME_ACCEPT4_SYSCALL 1
> +
> +/* The recvmmsg syscall was added for x86_64 in 2.6.33. */
> +#if __LINUX_KERNEL_VERSION >= 0x020621
> +# define __ASSUME_RECVMMSG_SYSCALL 1
> +#endif
> +
> +/* The sendmmsg syscall was added for x86_64 in 3.0. */
Could you use x86-64 everywhere (with minus instead of underscore), please?
Ok with this change,
thanks,
Andreas
> +#if __LINUX_KERNEL_VERSION >= 0x030000
> +# define __ASSUME_SENDMMSG_SYSCALL 1
> +#endif
> +
> +/* getcpu is a syscall for x86-64 since 3.1. */
> +#if __LINUX_KERNEL_VERSION >= 0x030100
> +# define __ASSUME_GETCPU_SYSCALL 1
> +#endif
> +
> +#include_next <kernel-features.h>
--
Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
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