diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/kernel-features.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-features.h | 104 |
1 files changed, 28 insertions, 76 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index db6af35c31..46e16f6e82 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -81,98 +81,62 @@ || defined __x86_64__ \ || defined __powerpc__ \ || defined __sh__ \ - || (defined __s390__ && __LINUX_KERNEL_VERSION >= 0x020616) + || defined __s390__ # define __ASSUME_UTIMES 1 #endif -/* pselect/ppoll were introduced just after 2.6.16-rc1. Due to the way - the kernel versions are advertised we can only rely on 2.6.17 to have - the code. On x86_64 and SH this appeared first in 2.6.19-rc1, - on ia64 in 2.6.22-rc1. */ -#if __LINUX_KERNEL_VERSION >= 0x020611 \ - && ((!defined __x86_64__ && !defined __sh__) \ - || (__LINUX_KERNEL_VERSION >= 0x020613 \ - && (defined __x86_64__ || defined __sh__))) -# define __ASSUME_PSELECT 1 -# define __ASSUME_PPOLL 1 -#endif +/* pselect/ppoll were introduced just after 2.6.16-rc1. On x86_64 and + SH this appeared first in 2.6.19-rc1, on ia64 in 2.6.22-rc1. */ +#define __ASSUME_PSELECT 1 +#define __ASSUME_PPOLL 1 -/* The *at syscalls were introduced just after 2.6.16-rc1. Due to the way the - kernel versions are advertised we can only rely on 2.6.17 to have - the code. On PPC they were introduced in 2.6.17-rc1, - on SH in 2.6.19-rc1. */ -#if __LINUX_KERNEL_VERSION >= 0x020611 \ - && (!defined __sh__ || __LINUX_KERNEL_VERSION >= 0x020613) -# define __ASSUME_ATFCTS 1 -#endif +/* The *at syscalls were introduced just after 2.6.16-rc1. On PPC + they were introduced in 2.6.17-rc1, on SH in 2.6.19-rc1. */ +#define __ASSUME_ATFCTS 1 /* Support for inter-process robust mutexes was added in 2.6.17 (but some architectures lack futex_atomic_cmpxchg_inatomic in some configurations). */ -#if __LINUX_KERNEL_VERSION >= 0x020611 \ - && (!defined __sh__ || __LINUX_KERNEL_VERSION >= 0x020613) \ - && !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) +#if !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) # define __ASSUME_SET_ROBUST_LIST 1 #endif /* Pessimistically assume that 2.6.18 introduced real handling of large numbers of requests to readv and writev and that we don't need a fallback. It likely worked for much longer. */ -#if __LINUX_KERNEL_VERSION >= 0x020612 -# define __ASSUME_COMPLETE_READV_WRITEV 1 -#endif +#define __ASSUME_COMPLETE_READV_WRITEV 1 /* Support for PI futexes was added in 2.6.18 (but some architectures lack futex_atomic_cmpxchg_inatomic in some configurations). */ -#if __LINUX_KERNEL_VERSION >= 0x020612 \ - && !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) +#if !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) # define __ASSUME_FUTEX_LOCK_PI 1 #endif /* Support for utimensat syscall was added in 2.6.22, on SH only after 2.6.22-rc1. */ -#if __LINUX_KERNEL_VERSION >= 0x020616 \ - && (!defined __sh__ || __LINUX_KERNEL_VERSION >= 0x020617) -# define __ASSUME_UTIMENSAT 1 -#endif +#define __ASSUME_UTIMENSAT 1 /* Support for private futexes was added in 2.6.22. */ -#if __LINUX_KERNEL_VERSION >= 0x020616 -# define __ASSUME_PRIVATE_FUTEX 1 -#endif +#define __ASSUME_PRIVATE_FUTEX 1 /* Support for fallocate was added in 2.6.23, on s390 only after 2.6.23-rc1. */ -#if __LINUX_KERNEL_VERSION >= 0x020617 \ - && (!defined __s390__ || __LINUX_KERNEL_VERSION >= 0x020618) -# define __ASSUME_FALLOCATE 1 -#endif +#define __ASSUME_FALLOCATE 1 /* Support for various CLOEXEC and NONBLOCK flags was added for x86, x86-64, PPC, IA-64, SPARC< and S390 in 2.6.23. */ -#if __LINUX_KERNEL_VERSION >= 0x020617 \ - && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ - || defined __sparc__ || defined __s390__) +#if (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ + || defined __sparc__ || defined __s390__) # define __ASSUME_O_CLOEXEC 1 #endif -/* From 2.6.23 onwards the value of ARG_MAX depends on the stack - size. */ -#define __LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL 0x020617 -#if __LINUX_KERNEL_VERSION >= __LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL -# define __ASSUME_ARG_MAX_STACK_BASED 1 -#endif - /* Support for ADJ_OFFSET_SS_READ was added in 2.6.24. */ -#if __LINUX_KERNEL_VERSION >= 0x020618 -# define __ASSUME_ADJ_OFFSET_SS_READ 1 -#endif +#define __ASSUME_ADJ_OFFSET_SS_READ 1 /* Support for various CLOEXEC and NONBLOCK flags was added for x86, x86-64, PPC, IA-64, and SPARC in 2.6.27. */ -#if __LINUX_KERNEL_VERSION >= 0x02061b \ - && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ - || defined __sparc__ || defined __s390__) +#if (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ + || defined __sparc__ || defined __s390__) # define __ASSUME_SOCK_CLOEXEC 1 # define __ASSUME_IN_NONBLOCK 1 # define __ASSUME_PIPE2 1 @@ -192,14 +156,13 @@ available through a separate syscall at the same time as through socketcall, and __ASSUME_ACCEPT4 if the accept4 function is known to work. */ -#if __LINUX_KERNEL_VERSION >= 0x02061c && defined __ASSUME_SOCKETCALL +#ifdef __ASSUME_SOCKETCALL # define __ASSUME_ACCEPT4_SOCKETCALL 1 #endif /* The accept4 syscall was added for x86_64 and SPARC in 2.6.28, and for PowerPC and SH in 2.6.37. */ -#if (__LINUX_KERNEL_VERSION >= 0x02061c \ - && (defined __x86_64__ || defined __sparc__)) \ +#if (defined __x86_64__ || defined __sparc__) \ || (__LINUX_KERNEL_VERSION >= 0x020625 \ && (defined __powerpc__ || defined __sh__)) # define __ASSUME_ACCEPT4_SYSCALL 1 @@ -213,33 +176,24 @@ #endif /* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29. */ -#if __LINUX_KERNEL_VERSION >= 0x02061d -# define __ASSUME_FUTEX_CLOCK_REALTIME 1 -#endif +#define __ASSUME_FUTEX_CLOCK_REALTIME 1 /* Support for the AT_RANDOM auxiliary vector entry was added in 2.6.29. */ -#if __LINUX_KERNEL_VERSION >= 0x02061d -# define __ASSUME_AT_RANDOM 1 -#endif +#define __ASSUME_AT_RANDOM 1 /* Support for preadv and pwritev was added in 2.6.30. */ -#if __LINUX_KERNEL_VERSION >= 0x02061e -# define __ASSUME_PREADV 1 -# define __ASSUME_PWRITEV 1 -#endif +#define __ASSUME_PREADV 1 +#define __ASSUME_PWRITEV 1 /* Support for FUTEX_*_REQUEUE_PI was added in 2.6.31 (but some architectures lack futex_atomic_cmpxchg_inatomic in some configurations). */ -#if __LINUX_KERNEL_VERSION >= 0x02061f \ - && !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) +#if !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) # define __ASSUME_REQUEUE_PI 1 #endif /* Support for F_GETOWN_EX was introduced in 2.6.32. */ -#if __LINUX_KERNEL_VERSION >= 0x020620 -# define __ASSUME_F_GETOWN_EX 1 -#endif +#define __ASSUME_F_GETOWN_EX 1 /* Support for recvmmsg functionality was added in 2.6.33. The macros defined correspond to those for accept4. */ @@ -308,6 +262,4 @@ /* 2.6.29 removed the XFS restricted_chown sysctl, so it is pointless looking for it in newer kernels. */ -#if __LINUX_KERNEL_VERSION >= 0x02061d -# define __ASSUME_XFS_RESTRICTED_CHOWN 1 -#endif +#define __ASSUME_XFS_RESTRICTED_CHOWN 1 |