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* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PSELECT,

Browse Source 
__ASSUME_PPOLL, __ASSUME_ATFCTS, __ASSUME_SET_ROBUST_LIST,
	__ASSUME_UTIMENSAT, __ASSUME_FALLOCATE): Update per-arch conditions
	when each feature was introduced.

	* sysdeps/unix/sysv/linux/dl-vdso.c: Don't include dl-hash.h.
	* sysdeps/unix/sysv/linux/dl-vdso.h: Don't include dl-hash.h if NDEBUG.
	(CHECK_HASH): New macro.
	(PREPARE_VERSION): Use it.

	* sysdeps/unix/sysv/linux/pselect.c (__generic_pselect): Only provide
	prototype if not __ASSUME_PSELECT.
	* sysdeps/unix/sysv/linux/ppoll.c (__generic_ppoll): Only provide
	prototype if not __ASSUME_PPOLL.

	* sysdeps/unix/sysv/linux/dl-osinfo.h (ROUND): #undef after use.

	* sysdeps/unix/clock_settime.c (freq, __pthread_clock_settime,
	hp_timing_settime): Don't define or declare if HANDLED_CPUTIME
	is defined.
This commit is contained in:
Ulrich Drepper
2007-08-14 03:21:23 +00:00
parent 4baf59ada8
commit 22502ea2a7
21 changed files with 466 additions and 104 deletions
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50
sysdeps/unix/sysv/linux/kernel-features.h
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@ -428,29 +428,37 @@
# define __ASSUME_TMPFS_NAME 1
#endif
/* pselect was 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. */
#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __x86_64__
/* 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 and on alpha just after 2.6.22-rc1. */
#if __LINUX_KERNEL_VERSION >= 0x020611 \
&& ((!defined __x86_64__ && !defined __sh__ && !defined __ia64__ \
&& !defined __alpha__) \
|| (__LINUX_KERNEL_VERSION >= 0x020613 \
&& (defined __x86_64__ || defined __sh__)) \
|| (__LINUX_KERNEL_VERSION >= 0x020616 && defined __ia64__) \
|| (__LINUX_KERNEL_VERSION >= 0x020617 && defined __alpha__))
# define __ASSUME_PSELECT 1
#endif
/* ppoll was 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. */
#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __x86_64__
# define __ASSUME_PPOLL 1
# define __ASSUME_PPOLL 1
#endif
/* 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. */
#if __LINUX_KERNEL_VERSION >= 0x020611
the code. On PPC they were introduced in 2.6.17-rc1, on SH in 2.6.19-rc1
and on Alpha just after 2.6.22-rc1. */
#if __LINUX_KERNEL_VERSION >= 0x020611 \
&& ((!defined __sh__ && !defined __alpha__) \
|| (__LINUX_KERNEL_VERSION >= 0x020613 && defined __sh__) \
|| (__LINUX_KERNEL_VERSION >= 0x020617 && defined __alpha__))
# define __ASSUME_ATFCTS 1
#endif
/* Support for inter-process robust mutexes was added in 2.6.17. */
#if __LINUX_KERNEL_VERSION >= 0x020611
#if __LINUX_KERNEL_VERSION >= 0x020611 \
&& ((!defined __sh__ && !defined __alpha__) \
|| (__LINUX_KERNEL_VERSION >= 0x020613 && defined __sh__) \
|| (__LINUX_KERNEL_VERSION >= 0x020617 && defined __alpha__))
# define __ASSUME_SET_ROBUST_LIST 1
#endif
@ -459,8 +467,11 @@
# define __ASSUME_FUTEX_LOCK_PI 1
#endif
/* Support for utimensat syscall was added in 2.6.22. */
#if __LINUX_KERNEL_VERSION >= 0x020616
/* Support for utimensat syscall was added in 2.6.22, on alpha and s390
only after 2.6.22-rc1. */
#if __LINUX_KERNEL_VERSION >= 0x020616 \
&& ((!defined __sh__ && !defined __alpha__) \
|| __LINUX_KERNEL_VERSION >= 0x020617)
# define __ASSUME_UTIMENSAT 1
#endif
@ -469,7 +480,10 @@
# define __ASSUME_PRIVATE_FUTEX 1
#endif
/* Support for fallocate was added in 2.6.23. */
#if __LINUX_KERNEL_VERSION >= 0x020617
/* Support for fallocate was added in 2.6.23, on s390
only after 2.6.23-rc1. */
#if __LINUX_KERNEL_VERSION >= 0x020617 \
&& ((!defined __s390__ && !defined __alpha__) \
|| (__LINUX_KERNEL_VERSION >= 0x020618 && defined __s390__))
# define __ASSUME_FALLOCATE 1
#endif