1 files changed, 0 insertions, 44 deletions
diff --git a/sysdeps/hppa/nptl/pthread_spin_unlock.c b/sysdeps/hppa/nptl/pthread_spin_unlock.c
deleted file mode 100644
index 7883568bc6..0000000000
--- a/sysdeps/hppa/nptl/pthread_spin_unlock.c
+++ /dev/null
@@ -1,44 +0,0 @@
-/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include "pthreadP.h"
-
-int
-pthread_spin_unlock (pthread_spinlock_t *lock)
-{
-  /* CONCURRENCTY NOTES:
-
-     The atomic_exchange_rel synchronizes-with the atomic_exhange_acq in
-     pthread_spin_lock.
-
-     On hppa we must not use a plain `stw` to reset the guard lock.  This
-     has to do with the kernel compare-and-swap helper that is used to
-     implement all of the atomic operations.
-
-     The kernel CAS helper uses its own internal locks and that means that
-     to create a true happens-before relationship between any two threads,
-     the second thread must observe the internal lock having a value of 0
-     (it must attempt to take the lock with ldcw).  This creates the
-     ordering required for a second thread to observe the effects of the
-     RMW of the kernel CAS helper in any other thread.
-
-     Therefore if a variable is used in an atomic macro it must always be
-     manipulated with atomic macros in order for memory ordering rules to
-     be preserved.  */
-  atomic_exchange_rel (lock, 0);
-  return 0;
-}