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 2019-05-14  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* nptl/lowlevellock.c (__lll_lock_wait, __lll_lock_wait_private):
+	Optimize futex call and add systemtap probe.
+
 	* nptl/pthreadP.h (CANCEL_ASYNC, CANCEL_RESET, LIBC_CANCEL_ASYNC,
 	LIBC_CANCEL_RESET, __libc_enable_asynccancel,
 	__libc_disable_asynccancel, __librt_enable_asynccancel,