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| author | Joseph Myers <joseph@codesourcery.com> | 2014-06-25 11:31:51 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2014-06-25 11:31:51 +0000 |
| commit | 0f5b71850e7ae2a4fefade72c73556166d52bc93 (patch) | |
| tree | ca6c2144d884f4bc76a1d81aba36d2be90323e34 /sysdeps/unix/sysv/linux/kernel-features.h | |
| parent | c7aec4beb13f125948884d80158f11c34239c61f (diff) | |
| download | glibc-0f5b71850e7ae2a4fefade72c73556166d52bc93.tar.gz | |
Remove __ASSUME_COMPLETE_READV_WRITEV.
This patch removes the __ASSUME_COMPLETE_READV_WRITEV
kernel-features.h macro, now that it can be unconditionally assumed to
be true. (The relevant kernel feature was added some time between 2.0
and 2.2, and this macro is only used in sysdeps/unix/sysv/linux/.)
Tested x86_64 that the disassembly of installed shared libraries is
unchanged by this patch.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_COMPLETE_READV_WRITEV): Remove macro.
* sysdeps/unix/sysv/linux/readv.c: Do not include
<kernel-features.h>.
[!__ASSUME_COMPLETE_READV_WRITEV]: Remove conditional code.
[!UIO_FASTIOV] (UIO_FASTIOV): Remove macro.
(__libc_readv) [__ASSUME_COMPLETE_READV_WRITEV]: Make code
unconditional.
(__libc_readv) [!__ASSUME_COMPLETE_READV_WRITEV]: Remove
conditional code.
* sysdeps/unix/sysv/linux/writev.c: Do not include
<kernel-features.h>.
[!__ASSUME_COMPLETE_READV_WRITEV]: Remove conditional code.
[!UIO_FASTIOV] (UIO_FASTIOV): Remove macro.
(__libc_writev) [__ASSUME_COMPLETE_READV_WRITEV]: Make code
unconditional.
(__libc_writev) [!__ASSUME_COMPLETE_READV_WRITEV]: Remove
conditional code.
Diffstat (limited to 'sysdeps/unix/sysv/linux/kernel-features.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-features.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index b39b295c9c..015b1c75bc 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -94,11 +94,6 @@ # 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. */ -#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 !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__) |