1 files changed, 0 insertions, 94 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/s390/elision-trylock.c b/nptl/sysdeps/unix/sysv/linux/s390/elision-trylock.c
deleted file mode 100644
index 61447d6bf4..0000000000
--- a/nptl/sysdeps/unix/sysv/linux/s390/elision-trylock.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/* Elided pthread mutex trylock.
-   Copyright (C) 2014 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 <pthread.h>
-#include <pthreadP.h>
-#include <lowlevellock.h>
-#include <htmintrin.h>
-#include <elision-conf.h>
-
-#define aconf __elision_aconf
-
-/* Try to elide a futex trylock.  FUTEX is the futex variable.  ADAPT_COUNT is
-   the adaptation counter in the mutex.  */
-
-int
-__lll_trylock_elision (int *futex, short *adapt_count)
-{
-  __asm__ volatile (".machinemode \"zarch_nohighgprs\"\n\t"
-		    ".machine \"all\""
-		    : : : "memory");
-
-  /* Implement POSIX semantics by forbiding nesting elided trylocks.
-     Sorry.  After the abort the code is re-executed
-     non transactional and if the lock was already locked
-     return an error.  */
-  if (__builtin_tx_nesting_depth () > 0)
-    {
-      /* Note that this abort may terminate an outermost transaction that
-	 was created outside glibc.
-	 This persistently aborts the current transactions to force
-	 them to use the default lock instead of retrying transactions
-	 until their try_tbegin is zero.
-      */
-      __builtin_tabort (_HTM_FIRST_USER_ABORT_CODE | 1);
-    }
-
-  /* Only try a transaction if it's worth it.  */
-  if (*adapt_count <= 0)
-    {
-      unsigned status;
-
-      if (__builtin_expect
-	  ((status = __builtin_tbegin ((void *)0)) == _HTM_TBEGIN_STARTED, 1))
-	{
-	  if (*futex == 0)
-	    return 0;
-	  /* Lock was busy.  Fall back to normal locking.  */
-	  /* Since we are in a non-nested transaction there is no need to abort,
-	     which is expensive.  */
-	  __builtin_tend ();
-	  /* Note: Changing the adapt_count here might abort a transaction on a
-	     different cpu, but that could happen anyway when the futex is
-	     acquired, so there's no need to check the nesting depth here.  */
-	  if (aconf.skip_lock_busy > 0)
-	    *adapt_count = aconf.skip_lock_busy;
-	}
-      else
-	{
-	  if (status != _HTM_TBEGIN_TRANSIENT)
-	    {
-	      /* A persistent abort (cc 1 or 3) indicates that a retry is
-		 probably futile.  Use the normal locking now and for the
-		 next couple of calls.
-		 Be careful to avoid writing to the lock.  */
-	      if (aconf.skip_trylock_internal_abort > 0)
-		*adapt_count = aconf.skip_trylock_internal_abort;
-	    }
-	}
-      /* Could do some retries here.  */
-    }
-  else
-    {
-      /* Lost updates are possible, but harmless.  Due to races this might lead
-	 to *adapt_count becoming less than zero.  */
-      (*adapt_count)--;
-    }
-
-  return lll_trylock (*futex);
-}