1 files changed, 0 insertions, 56 deletions
diff --git a/ports/sysdeps/tile/nptl/pthread_spin_lock.c b/ports/sysdeps/tile/nptl/pthread_spin_lock.c
deleted file mode 100644
index 9414121fb7..0000000000
--- a/ports/sysdeps/tile/nptl/pthread_spin_lock.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* Copyright (C) 2011-2014 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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"
-#include <arch/spr_def.h>
-#include <atomic.h>
-
-/* Bound point for bounded exponential backoff */
-#define BACKOFF_MAX 2048
-
-/* Initial cycle delay for exponential backoff */
-#define BACKOFF_START 32
-
-#ifdef __tilegx__
-/* Use cmpexch() after the initial fast-path exch to avoid
-   invalidating the cache line of the lock holder.  */
-# define TNS(p) atomic_exchange_acq((p), 1)
-# define CMPTNS(p) atomic_compare_and_exchange_val_acq((p), 1, 0)
-#else
-# define TNS(p) __insn_tns(p)
-# define CMPTNS(p) __insn_tns(p)
-# define SPR_CYCLE SPR_CYCLE_LOW   /* The low 32 bits are sufficient. */
-#endif
-
-int
-pthread_spin_lock (pthread_spinlock_t *lock)
-{
-  if (__builtin_expect (TNS (lock) != 0, 0))
-    {
-      unsigned int backoff = BACKOFF_START;
-      while (CMPTNS (lock) != 0)
-        {
-          unsigned int start = __insn_mfspr (SPR_CYCLE);
-          while (__insn_mfspr (SPR_CYCLE) - start < backoff)
-            ;
-          if (backoff < BACKOFF_MAX)
-            backoff *= 2;
-        }
-    }
-  return 0;
-}