[PATCH 3/6] Avoid reading errno in syscall implementations

[H.J. Lu]

On Mon, Oct 12, 2015 at 4:19 PM, H.J. Lu <hongjiu.lu@intel.com> wrote:
> Reading errno is expensive for x86 PIC.  With INTERNAL_SYSCALL,
> INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO and
> INLINE_SYSCALL_ERROR_RETURN, we can avoid reading errno.
>
>         * sysdeps/unix/sysv/linux/eventfd.c (eventfd): Use
>         INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P and
>         INTERNAL_SYSCALL_ERRNO to avoid reading errno.
>         * sysdeps/unix/sysv/linux/fstatfs64.c (__fstatfs64): Likewise.
>         * sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64):
>         Likewise.
>         * sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64):
>         Likewise.
>         * sysdeps/unix/sysv/linux/signalfd.c (signalfd): Likewise.
>         * sysdeps/unix/sysv/linux/statfs64.c (__statfs64): Likewise.

First 2 patches have been checked into master.  Here is the updated
patch.  There is no code change in libc.so on x86-64.  OK for master?

Thanks.

-- 
H.J.
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