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GNU C Library master sources branch azanella/lockelision-ppc created. glibc-2.19-601-g1496dfe


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The branch, azanella/lockelision-ppc has been created
        at  1496dfe9b65f53746c749e25b3c09073afa8cb7a (commit)

- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=1496dfe9b65f53746c749e25b3c09073afa8cb7a

commit 1496dfe9b65f53746c749e25b3c09073afa8cb7a
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Fri Mar 21 08:26:59 2014 -0400

    PowerPC: Adjusting LE mutex destroy

diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_destroy.c b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_destroy.c
new file mode 100644
index 0000000..b125f75
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_destroy.c
@@ -0,0 +1,22 @@
+/* Elided version of pthread_mutex_destroy.
+   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 <elision-conf.h>
+#include "force-elision.h"
+
+#include "nptl/pthread_mutex_destroy.c"

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=50ffc83fb6511eb63df4a8f4c03ab998da06488a

commit 50ffc83fb6511eb63df4a8f4c03ab998da06488a
Author: Andreas Schwab <schwab@suse.de>
Date:   Thu Mar 27 16:50:04 2014 -0400

    Skip checks in pthread_mutex_destroy when doing elision
    
    When doing elisison the __nusers field is not updated, thus can have an
    arbitrary value.
    
    	[BZ #16657]
    	* nptl/pthread_mutex_destroy.c (__pthread_mutex_destroy): Skip
    	checks when doing elision.
    	* nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_destroy.c: New
    	* file.

diff --git a/nptl/pthread_mutex_destroy.c b/nptl/pthread_mutex_destroy.c
index 35a2dfe..f6bd6d9 100644
--- a/nptl/pthread_mutex_destroy.c
+++ b/nptl/pthread_mutex_destroy.c
@@ -21,6 +21,9 @@
 
 #include <stap-probe.h>
 
+#ifndef DO_ELISION
+# define DO_ELISION(m) 0
+#endif
 
 int
 __pthread_mutex_destroy (mutex)
@@ -28,7 +31,8 @@ __pthread_mutex_destroy (mutex)
 {
   LIBC_PROBE (mutex_destroy, 1, mutex);
 
-  if ((mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP) == 0
+  if (!DO_ELISION (mutex)
+      && (mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP) == 0
       && mutex->__data.__nusers != 0)
     return EBUSY;
 
diff --git a/nptl/pthread_mutex_destroy.c b/nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_destroy.c
similarity index 55%
copy from nptl/pthread_mutex_destroy.c
copy to nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_destroy.c
index 35a2dfe..b125f75 100644
--- a/nptl/pthread_mutex_destroy.c
+++ b/nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_destroy.c
@@ -1,6 +1,6 @@
-/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+/* Elided version of pthread_mutex_destroy.
+   Copyright (C) 2014 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -16,26 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
-#include "pthreadP.h"
+#include <elision-conf.h>
+#include "force-elision.h"
 
-#include <stap-probe.h>
-
-
-int
-__pthread_mutex_destroy (mutex)
-     pthread_mutex_t *mutex;
-{
-  LIBC_PROBE (mutex_destroy, 1, mutex);
-
-  if ((mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP) == 0
-      && mutex->__data.__nusers != 0)
-    return EBUSY;
-
-  /* Set to an invalid value.  */
-  mutex->__data.__kind = -1;
-
-  return 0;
-}
-strong_alias (__pthread_mutex_destroy, pthread_mutex_destroy)
-hidden_def (__pthread_mutex_destroy)
+#include "nptl/pthread_mutex_destroy.c"

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=cb59eaef602f7980987ade60e4ad87315bcf49c3

commit cb59eaef602f7980987ade60e4ad87315bcf49c3
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Fri Dec 13 15:59:35 2013 -0500

    PowerPC: Add the low level infrastructure for pthreads lock elision

diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/Makefile b/nptl/sysdeps/unix/sysv/linux/sparc/Makefile
index e98c9bd..a376c48 100644
--- a/nptl/sysdeps/unix/sysv/linux/sparc/Makefile
+++ b/nptl/sysdeps/unix/sysv/linux/sparc/Makefile
@@ -1,2 +1,5 @@
 # pull in __syscall_error routine
 libpthread-routines += sysdep
+
+libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
+			      elision-trylock
diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile
index 28f7165..974a1bf 100644
--- a/sysdeps/unix/sysv/linux/powerpc/Makefile
+++ b/sysdeps/unix/sysv/linux/powerpc/Makefile
@@ -34,4 +34,6 @@ endif
 
 ifeq ($(subdir),nptl)
 libpthread-routines += sysdep
+libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
+			      elision-trylock
 endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h b/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
index 4e9c518..c971e89 100644
--- a/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
@@ -90,13 +90,23 @@ typedef union
        binary compatibility.  */
     int __kind;
 #if __WORDSIZE == 64
-    int __spins;
+    short __spins;
+    short __elision;
     __pthread_list_t __list;
 # define __PTHREAD_MUTEX_HAVE_PREV	1
+# define __PTHREAD_SPINS             0, 0
 #else
     unsigned int __nusers;
     __extension__ union
     {
+      struct
+      {
+	short __espins;
+	short __elision;
+# define __spins d.__espins
+# define __elision d.__elision
+# define __PTHREAD_SPINS         { 0, 0 }
+      } d;
       int __spins;
       __pthread_slist_t __list;
     };
@@ -106,9 +116,6 @@ typedef union
   long int __align;
 } pthread_mutex_t;
 
-/* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
-#define __PTHREAD_SPINS 0
-
 typedef union
 {
   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-conf.c b/sysdeps/unix/sysv/linux/powerpc/elision-conf.c
new file mode 100644
index 0000000..72f1124
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-conf.c
@@ -0,0 +1,85 @@
+/* elision-conf.c: Lock elision tunable parameters.
+   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 "config.h"
+#include <pthreadP.h>
+#include <elision-conf.h>
+#include <unistd.h>
+#include <dl-procinfo.h>
+
+/* Reasonable initial tuning values, may be revised in the future.
+   This is a conservative initial value.  */
+
+struct elision_config __elision_aconf =
+  {
+    /* How often to not attempt to use elision if a transaction aborted
+       because the lock is already acquired.  Expressed in number of lock
+       acquisition attempts.  */
+    .skip_lock_busy = 3,
+    /* How often to not attempt to use elision if a transaction aborted due
+       to reasons other than other threads' memory accesses.  Expressed in
+       number of lock acquisition attempts.  */
+    .skip_lock_internal_abort = 3,
+    /* How often to not attempt to use elision if a lock used up all retries
+       without success.  Expressed in number of lock acquisition attempts.  */
+    .skip_lock_out_of_tbegin_retries = 3,
+    /* How often we retry using elision if there is chance for the transaction
+       to finish execution (e.g., it wasn't aborted due to the lock being
+       already acquired.  */
+    .try_tbegin = 3,
+    /* Same as SKIP_LOCK_INTERNAL_ABORT but for trylock.  */
+    .skip_trylock_internal_abort = 3,
+  };
+
+/* Set when the CPU supports elision. When false elision is never attempted.  */
+
+int __elision_available attribute_hidden;
+
+/* Force elision for all new locks.  This is used to decide whether existing
+   DEFAULT locks should be automatically upgraded to elision in
+   pthread_mutex_lock().  Disabled for suid programs.  Only used when elision
+   is available.  */
+
+int __pthread_force_elision attribute_hidden;
+
+/* Initialize elison.  */
+
+static void
+elision_init (int argc __attribute__ ((unused)),
+	      char **argv  __attribute__ ((unused)),
+	      char **environ)
+{
+  __elision_available = (GLRO (dl_hwcap2) & PPC_FEATURE2_HAS_HTM) ? 1 : 0;
+#ifdef ENABLE_LOCK_ELISION
+  __pthread_force_elision = __libc_enable_secure ? 0 : __elision_available;
+#endif
+}
+
+#ifdef SHARED
+# define INIT_SECTION ".init_array"
+# define MAYBE_CONST
+#else
+# define INIT_SECTION ".preinit_array"
+# define MAYBE_CONST const
+#endif
+
+void (*MAYBE_CONST __pthread_init_array []) (int, char **, char **)
+  __attribute__ ((section (INIT_SECTION), aligned (sizeof (void *)))) =
+{
+  &elision_init
+};
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-conf.h b/sysdeps/unix/sysv/linux/powerpc/elision-conf.h
new file mode 100644
index 0000000..2506173
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-conf.h
@@ -0,0 +1,44 @@
+/* elision-conf.h: Lock elision tunable parameters.
+   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/>.  */
+
+#ifndef _ELISION_CONF_H
+#define _ELISION_CONF_H 1
+
+#include <pthread.h>
+#include <time.h>
+
+/* Should make sure there is no false sharing on this.  */
+
+struct elision_config
+{
+  int skip_lock_busy;
+  int skip_lock_internal_abort;
+  int skip_lock_out_of_tbegin_retries;
+  int try_tbegin;
+  int skip_trylock_internal_abort;
+};
+
+extern struct elision_config __elision_aconf attribute_hidden;
+
+extern int __elision_available attribute_hidden;
+extern int __pthread_force_elision attribute_hidden;
+
+/* Tell the test suite to test elision for this architecture.  */
+#define HAVE_ELISION 1
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-lock.c b/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
new file mode 100644
index 0000000..740b7c7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
@@ -0,0 +1,86 @@
+/* elision-lock.c: Elided pthread mutex lock.
+   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 <stdio.h>
+#include <pthread.h>
+#include <pthreadP.h>
+#include <lowlevellock.h>
+#include <elision-conf.h>
+#include "htm.h"
+
+#if !defined(LLL_LOCK) && !defined(EXTRAARG)
+/* Make sure the configuration code is always linked in for static
+   libraries.  */
+#include "elision-conf.c"
+#endif
+
+#ifndef EXTRAARG
+# define EXTRAARG
+#endif
+#ifndef LLL_LOCK
+# define LLL_LOCK(a,b) lll_lock(a,b), 0
+#endif
+
+#define aconf __elision_aconf
+
+/* Adaptive lock using transactions.
+   By default the lock region is run as a transaction, and when it
+   aborts or the lock is busy the lock adapts itself.  */
+
+int
+__lll_lock_elision (int *lock, short *adapt_count, EXTRAARG int pshared)
+{
+  if (*adapt_count > 0)
+    {
+      (*adapt_count)--;
+      goto use_lock;
+    }
+
+  int try_begin = aconf.try_tbegin;
+  while (1)
+    {
+      if (__builtin_tbegin (0))
+	{
+	  /* Lock was busy.  Fall back to normal locking.  */
+	  if (*lock == 0)
+	     __builtin_tabort (0);
+	  return 0;
+	}
+      else
+	{
+	  /* A persistent failure indicates that a retry will probably
+	     result in another failure.  Use normal locking now and
+	     for the next couple of calls.  */
+	  if (try_begin-- <= 0
+	      || _TEXASRU_FAILURE_PERSISTENT (__builtin_get_texasru ()))
+	   {
+	      if (aconf.skip_lock_internal_abort > 0) 
+		*adapt_count = aconf.skip_lock_internal_abort;
+	      goto use_lock;
+	   }
+	}
+     }
+
+  /* Same logic as above, but for for a number of temporary failures in a
+     a row.  */
+  if (aconf.skip_lock_out_of_tbegin_retries > 0 && aconf.try_tbegin > 0)
+    *adapt_count = aconf.skip_lock_out_of_tbegin_retries;
+
+use_lock:
+  return LLL_LOCK ((*lock), pshared);
+}
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-timed.c b/sysdeps/unix/sysv/linux/powerpc/elision-timed.c
new file mode 100644
index 0000000..0bdb824
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-timed.c
@@ -0,0 +1,26 @@
+/* elision-timed.c: Lock elision timed lock.
+   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 <time.h>
+#include <elision-conf.h>
+#include "lowlevellock.h"
+#define __lll_lock_elision __lll_timedlock_elision
+#define EXTRAARG const struct timespec *t,
+#undef LLL_LOCK
+#define LLL_LOCK(a, b) lll_timedlock(a, t, b)
+#include "elision-lock.c"
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
new file mode 100644
index 0000000..60aaf90
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
@@ -0,0 +1,68 @@
+/* elision-trylock.c: Lock eliding trylock for pthreads.
+   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 <elision-conf.h>
+#include "htm.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)
+{
+  /* Implement POSIX semantics by forbiding nesting elided trylocks.  */
+  __builtin_tabort (_ABORT_NESTED_TRYLOCK);
+
+  /* Only try a transaction if it's worth it.  */
+  if (*adapt_count > 0)
+    {
+      (*adapt_count)--;
+      goto use_lock;
+    }
+
+  if (__builtin_tbegin (0))
+    {
+      if (*futex == 0)
+	return 0;
+
+      /* Lock was busy.  Fall back to normal locking.  */
+      __builtin_tabort (_ABORT_LOCK_BUSY);
+    }
+  else
+    {
+      if (_TEXASRU_FAILURE_PERSISTENT (__builtin_get_texasru ()))
+	{
+	  /* A persistent failure indicates that a retry will probably
+	     resulting in another failure.  Use normal locking now and
+	     for the next couple of calls.  */
+	  if (aconf.skip_trylock_internal_abort > 0)
+	    *adapt_count = aconf.skip_trylock_internal_abort;
+	}
+
+	if (aconf.skip_lock_busy > 0)
+	  *adapt_count = aconf.skip_lock_busy;
+    }
+
+use_lock:
+  return lll_trylock (*futex);
+}
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c b/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
new file mode 100644
index 0000000..59d46bb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
@@ -0,0 +1,32 @@
+/* elision-unlock.c: Commit an elided pthread lock.
+   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 "pthreadP.h"
+#include "lowlevellock.h"
+#include "htm.h"
+
+int
+__lll_unlock_elision(int *lock, int pshared)
+{
+  /* When the lock was free we're in a transaction.  */
+  if (*lock == 0)
+    __builtin_tend (0);
+  else
+    lll_unlock ((*lock), pshared);
+  return 0;
+}
diff --git a/sysdeps/unix/sysv/linux/powerpc/force-elision.h b/sysdeps/unix/sysv/linux/powerpc/force-elision.h
new file mode 100644
index 0000000..9789905
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/force-elision.h
@@ -0,0 +1,31 @@
+/* force-elision.h: Automatic enabling of elision for mutexes
+   Copyright (C) 2013 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/>.  */
+
+/* Check for elision on this lock without upgrading.  */
+#define DO_ELISION(m)							\
+  (__pthread_force_elision						\
+   && (m->__data.__kind & PTHREAD_MUTEX_NO_ELISION_NP) == 0)		\
+
+/* Automatically enable elision for existing user lock kinds.  */
+#define FORCE_ELISION(m, s)						\
+  if (__pthread_force_elision						\
+      && (m->__data.__kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0)	\
+    {									\
+      mutex->__data.__kind |= PTHREAD_MUTEX_ELISION_NP;			\
+      s;								\
+    }
diff --git a/sysdeps/unix/sysv/linux/powerpc/htm.h b/sysdeps/unix/sysv/linux/powerpc/htm.h
new file mode 100644
index 0000000..e901932
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/htm.h
@@ -0,0 +1,135 @@
+/* Shared HTM header.  Emulate transactional execution facility intrinsics for
+   compilers and assemblers that do not support the intrinsics and instructions
+   yet. 
+
+   Copyright (C) 2013 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/>.  */
+
+#ifndef _HTM_H
+#define _HTM_H 1
+
+#ifdef __ASSEMBLER__
+
+/* tbegin.  */
+.macro TBEGIN
+	.byte 0x7c,0x00,0x05,0x1d
+.endm
+
+/* tend. 0  */
+.macro TEND
+	.byte 0x7c,0x00,0x05,0x5d
+.endm
+
+/* tabort. code  */
+.macro TABORT code
+        .byte 0x7c
+        .byte \code
+	.byte 0x07
+	.byte 0x1d
+.endm
+
+/* mfspr %dst,130  */
+.macro TEXASR dst
+	mfspr \dst,130
+.endm
+
+#else
+
+/* Official HTM intrinsics interface matching gcc, but works
+   on older gcc compatible compilers and binutils.
+   We should somehow detect if the compiler supports it, because
+   it may be able to generate slightly better code.  */
+
+#define TBEGIN ".byte 0x7c,0x00,0x05,0x1d"
+#define TEND   ".byte 0x7c,0x00,0x05,0x5d"
+#define TABORT ".byte 0x7c,%1,0x07,0x1d"
+
+/* Definitions used for TEXASR Failure code (bits 0:6), they need to be even
+   because tabort. always sets the first bit.  */
+#define _ABORT_LOCK_BUSY       0x3f
+#define _ABORT_NESTED_TRYLOCK  0x3e
+
+#define __force_inline        inline __attribute__((__always_inline__))
+
+#ifndef __HTM__
+
+#define _TEXASRU_EXTRACT_BITS(TEXASR,BITNUM,SIZE) \
+  (((TEXASR) >> (31-(BITNUM))) & ((1<<(SIZE))-1))
+#define _TEXASRU_FAILURE_PERSISTENT(TEXASRU) \
+  _TEXASRU_EXTRACT_BITS(TEXASRU, 7, 1)
+
+static __force_inline
+unsigned int _tbegin (void)
+{
+  unsigned int ret;
+  asm volatile (
+    TBEGIN "\t\n"
+    "mfcr   %0,128\t\n"
+    "rlwinm %0,%0,3,1\t\n"
+    "subfic %0,%0,1\t\n"
+    : "=r" (ret) :: "cr0", "memory");
+  return ret;
+}
+
+static __force_inline
+unsigned int _tend (void)
+{
+  unsigned int ret;
+  asm volatile (
+    TEND "\t\n"
+    "mfcr   %0,128\t\n"
+    "rlwinm %0,%0,3,1\t\n"
+    "subfic %0,%0,1\t\n"
+    : "=r" (ret) :: "cr0", "memory");
+  return ret;
+}
+
+static __force_inline
+unsigned int _tabort (unsigned int code)
+{
+  unsigned int ret;
+  asm volatile (
+    TABORT "\t\n"
+    "mfcr     %0,128\t\n"
+    "rlwinm   %0,%0,3,1\t\n"
+    "subfic   %0,%0,1\t\n"
+    : "=r" (ret) : "r" (code) : "cr0", "memory");
+  return ret;
+}
+
+static __force_inline
+unsigned long _texasru (void)
+{
+  unsigned long ret;
+  asm volatile (
+    "mfspr %0,131\t\n"
+    : "=r" (ret));
+  return ret;
+}
+
+#define __builtin_tbegin(tdb)       _tbegin ()
+#define __builtin_tend(nested)      _tend ()
+#define __builtin_tabort(abortcode) _tabort (abortcode)
+#define __builtin_get_texasru()     _texasru ()
+
+#else
+# include <htmintrin.h>
+#endif /* ifndef __HTM__  */
+
+#endif
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h b/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
index ab92c3f..cb4702e 100644
--- a/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
@@ -302,6 +302,13 @@ extern int __lll_robust_timedlock_wait
     __val;								      \
   })
 
+extern int __lll_timedlock_elision
+  (int *futex, short *adapt_count, const struct timespec *timeout, int private)
+  attribute_hidden;
+
+#define lll_timedlock_elision(futex, adapt_count, timeout, private)	      \
+  __lll_timedlock_elision(&(futex), &(adapt_count), timeout, private)
+
 #define lll_unlock(lock, private) \
   ((void) ({								      \
     int *__futex = &(lock);						      \
@@ -353,4 +360,20 @@ extern int __lll_timedwait_tid (int *, const struct timespec *)
     __res;								      \
   })
 
+extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
+  attribute_hidden;
+
+extern int __lll_unlock_elision(int *lock, int private)
+  attribute_hidden;
+
+extern int __lll_trylock_elision(int *lock, short *adapt_count)
+  attribute_hidden;
+
+#define lll_lock_elision(futex, adapt_count, private) \
+  __lll_lock_elision (&(futex), &(adapt_count), private)
+#define lll_unlock_elision(futex, private) \
+  __lll_unlock_elision (&(futex), private)
+#define lll_trylock_elision(futex, adapt_count) \
+  __lll_trylock_elision (&(futex), &(adapt_count))
+
 #endif	/* lowlevellock.h */
diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_cond_lock.c b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_cond_lock.c
new file mode 100644
index 0000000..115c3fa
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_cond_lock.c
@@ -0,0 +1,22 @@
+/* Copyright (C) 2013 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/>.  */
+
+/* The cond lock is not actually elided yet, but we still need to handle
+   already elided locks.  */
+#include <elision-conf.h>
+
+#include <sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c>
diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_lock.c b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_lock.c
new file mode 100644
index 0000000..9413167
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_lock.c
@@ -0,0 +1,22 @@
+/* Elided version of pthread_mutex_lock.
+   Copyright (C) 2011, 2012, 2013 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 <elision-conf.h>
+#include <force-elision.h>
+
+#include <nptl/pthread_mutex_lock.c>
diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_timedlock.c b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_timedlock.c
new file mode 100644
index 0000000..2f96dcc
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_timedlock.c
@@ -0,0 +1,22 @@
+/* Elided version of pthread_mutex_timedlock.
+   Copyright (C) 2011, 2012, 2013 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 <elision-conf.h>
+#include <force-elision.h>
+
+#include <nptl/pthread_mutex_timedlock.c>
diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_trylock.c b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_trylock.c
new file mode 100644
index 0000000..ea8a8ff
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_trylock.c
@@ -0,0 +1,22 @@
+/* Elided version of 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 <elision-conf.h>
+#include <force-elision.h>
+
+#include <nptl/pthread_mutex_trylock.c>

-----------------------------------------------------------------------


hooks/post-receive
-- 
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