[PATCH] nptl: Assume __ASSUME_FUTEX_CLOCK_REALTIME support

[Florian Weimer]

* Adhemerval Zanella:

> This patch assumes realtime clock support for nptl and thus removes
> all the associated code.
>
> For __pthread_mutex_timedlock the fallback usage for the case where
> lll_futex_timed_wait_bitset it not set define is also removed. The
> generic lowlevellock-futex.h always define it, so for NPTL code the
> check always yield true.
>
> Checked on x86_64-linux-gnu and i686-linux-gnu.
>
> 	* nptl/nptl-init.c (__have_futex_clock_realtime,
> 	__have_futex_clock_realtime): Remove definition.
> 	(__pthread_initialize_minimal_internal): Remove FUTEX_CLOCK_REALTIME
> 	check test for !__ASSUME_FUTEX_CLOCK_REALTIME.
> 	* nptl/pthread_mutex_timedlock.c (__pthread_mutex_timedlock): Assume
> 	__ASSUME_FUTEX_CLOCK_REALTIME support.
> 	* sysdeps/unix/sysv/linux/i386/lowlevellock.S: Likewise.
> 	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
> 	* sysdeps/unix/sysv/linux/kernel-features.h
> 	(__ASSUME_FUTEX_CLOCK_REALTIME): Remove.
> 	* sysdeps/nptl/lowlevellock-futex.h (lll_futex_timed_wait_bitset):
> 	Adjust comment.

Patch looks good to me.  Thanks.

Florian