nptl: Move elision implementations into libc

The elision interfaces are closely aligned between the targets that
implement them, so declare them in the generic <lowlevellock.h>
file.

Empty .c stubs are provided, so that fewer makefile updates
under sysdeps are needed.  Also simplify initialization via
__libc_early_init.

The symbols __lll_clocklock_elision, __lll_lock_elision,
__lll_trylock_elision, __lll_unlock_elision, __pthread_force_elision
move into libc.  For the time being, non-hidden references are used
from libpthread to access them, but once that part of libpthread
is moved into libc, hidden symbols will be used again.  (Hidden
references seem desirable to reduce the likelihood of transactions
aborts.)

46 files changed, 185 insertions, 646 deletions

diff --git a/elf/libc_early_init.c b/elf/libc_early_init.c
index 4755554..9b1901a 100644
--- a/elf/libc_early_init.c
+++ b/elf/libc_early_init.c
@@ -17,8 +17,10 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <ctype.h>
+#include <elision-conf.h>
 #include <libc-early-init.h>
 #include <libc-internal.h>
+#include <lowlevellock.h>
 #include <sys/single_threaded.h>
 
 #ifdef SHARED
@@ -37,4 +39,8 @@ __libc_early_init (_Bool initial)
 #ifdef SHARED
   __libc_initial = initial;
 #endif
+
+#if ENABLE_ELISION_SUPPORT
+  __lll_elision_init ();
+#endif
 }
diff --git a/nptl/Makefile b/nptl/Makefile
index 4dd9c6a..5f85dd7 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -30,6 +30,11 @@ extra-libs-others := $(extra-libs)
 
 routines = \
   alloca_cutoff \
+  elision-conf \
+  elision-lock \
+  elision-timed \
+  elision-trylock \
+  elision-unlock \
   forward \
   futex-internal \
   libc-cancellation \
diff --git a/nptl/Versions b/nptl/Versions
index 6cca579..186befe 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -79,8 +79,12 @@ libc {
     __libc_current_sigrtmin_private;
     __libc_dl_error_tsd;
     __libc_pthread_init;
+    __lll_clocklock_elision;
+    __lll_lock_elision;
     __lll_lock_wait;
     __lll_lock_wait_private;
+    __lll_trylock_elision;
+    __lll_unlock_elision;
     __pthread_attr_copy;
     __pthread_attr_destroy;
     __pthread_attr_init;
@@ -88,6 +92,7 @@ libc {
     __pthread_attr_setsigmask_internal;
     __pthread_cond_destroy; # Used by the C11 threads.
     __pthread_cond_init; # Used by the C11 threads.
+    __pthread_force_elision;
     __pthread_getattr_default_np;
   }
 }
diff --git a/sysdeps/unix/sysv/linux/s390/pthread_mutex_lock.c b/nptl/elision-conf.c
index b193b5b..d71c30a 100644
--- a/sysdeps/unix/sysv/linux/s390/pthread_mutex_lock.c
+++ b/nptl/elision-conf.c
@@ -1,5 +1,5 @@
-/* Elided version of pthread_mutex_lock.
-   Copyright (C) 2014-2021 Free Software Foundation, Inc.
+/* elision-conf.c: Lock elision tunable parameters.  Stub version.
+   Copyright (C) 2021 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
@@ -15,8 +15,3 @@
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
    <https://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_lock.c b/nptl/elision-lock.c
index 110a6bf..a8235cb 100644
--- a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_lock.c
+++ b/nptl/elision-lock.c
@@ -1,5 +1,5 @@
-/* Elided version of pthread_mutex_lock.
-   Copyright (C) 2015-2021 Free Software Foundation, Inc.
+/* elision-lock.c: Lock elision locking.  Stub version.
+   Copyright (C) 2021 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
@@ -15,8 +15,3 @@
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
    <https://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_trylock.c b/nptl/elision-timed.c
index ee9fe1d..4723197 100644
--- a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_trylock.c
+++ b/nptl/elision-timed.c
@@ -1,5 +1,5 @@
-/* Elided version of pthread_mutex_trylock.
-   Copyright (C) 2015-2021 Free Software Foundation, Inc.
+/* elision-lock.c: Lock elision timed locking.  Stub version.
+   Copyright (C) 2021 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
@@ -15,8 +15,3 @@
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
-
-#include <elision-conf.h>
-#include <force-elision.h>
-
-#include <nptl/pthread_mutex_trylock.c>
diff --git a/sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c b/nptl/elision-trylock.c
index 6e5f1f9..286a741 100644
--- a/sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c
+++ b/nptl/elision-trylock.c
@@ -1,5 +1,5 @@
-/* Elided version of pthread_mutex_lock.
-   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+/* elision-lock.c: Lock elision locking attempts.  Stub version.
+   Copyright (C) 2021 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
@@ -15,8 +15,3 @@
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
-
-#include <elision-conf.h>
-#include "force-elision.h"
-
-#include "nptl/pthread_mutex_lock.c"
diff --git a/nptl/elision-unlock.c b/nptl/elision-unlock.c
new file mode 100644
index 0000000..552a90a
--- /dev/null
+++ b/nptl/elision-unlock.c
@@ -0,0 +1,17 @@
+/* elision-lock.c: Lock elision unlocking support.  Stub version.
+   Copyright (C) 2021 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
+   <https://www.gnu.org/licenses/>.  */
diff --git a/nptl/lowlevellock.c b/nptl/lowlevellock.c
index 7976c6d..2d077d8 100644
--- a/nptl/lowlevellock.c
+++ b/nptl/lowlevellock.c
@@ -51,3 +51,8 @@ __lll_lock_wait (int *futex, int private)
     }
 }
 libc_hidden_def (__lll_lock_wait)
+
+#if ENABLE_ELISION_SUPPORT
+int __pthread_force_elision __attribute__ ((nocommon));
+libc_hidden_data_def (__pthread_force_elision)
+#endif
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index 319658a..f0de7b7 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -27,15 +27,6 @@
 #include <futex-internal.h>
 #include <stap-probe.h>
 
-#ifndef lll_lock_elision
-#define lll_lock_elision(lock, try_lock, private)	({ \
-      lll_lock (lock, private); 0; })
-#endif
-
-#ifndef lll_trylock_elision
-#define lll_trylock_elision(a,t) lll_trylock(a)
-#endif
-
 /* Some of the following definitions differ when pthread_mutex_cond_lock.c
    includes this file.  */
 #ifndef LLL_MUTEX_LOCK
@@ -52,10 +43,6 @@
 		   PTHREAD_MUTEX_PSHARED (mutex))
 #endif
 
-#ifndef FORCE_ELISION
-#define FORCE_ELISION(m, s)
-#endif
-
 static int __pthread_mutex_lock_full (pthread_mutex_t *mutex)
      __attribute_noinline__;
 
@@ -80,7 +67,7 @@ __pthread_mutex_lock (pthread_mutex_t *mutex)
       LLL_MUTEX_LOCK (mutex);
       assert (mutex->__data.__owner == 0);
     }
-#ifdef HAVE_ELISION
+#if ENABLE_ELISION_SUPPORT
   else if (__glibc_likely (type == PTHREAD_MUTEX_TIMED_ELISION_NP))
     {
   elision: __attribute__((unused))
diff --git a/nptl/pthread_mutex_timedlock.c b/nptl/pthread_mutex_timedlock.c
index 8428ebc..5e52a4d 100644
--- a/nptl/pthread_mutex_timedlock.c
+++ b/nptl/pthread_mutex_timedlock.c
@@ -29,19 +29,6 @@
 
 #include <stap-probe.h>
 
-#ifndef lll_clocklock_elision
-#define lll_clocklock_elision(futex, adapt_count, clockid, abstime, private) \
-  __futex_clocklock64 (&(futex), clockid, abstime, private)
-#endif
-
-#ifndef lll_trylock_elision
-#define lll_trylock_elision(a,t) lll_trylock(a)
-#endif
-
-#ifndef FORCE_ELISION
-#define FORCE_ELISION(m, s)
-#endif
-
 int
 __pthread_mutex_clocklock_common (pthread_mutex_t *mutex,
 				  clockid_t clockid,
diff --git a/nptl/pthread_mutex_trylock.c b/nptl/pthread_mutex_trylock.c
index 5197275..e52ddda 100644
--- a/nptl/pthread_mutex_trylock.c
+++ b/nptl/pthread_mutex_trylock.c
@@ -23,14 +23,6 @@
 #include <lowlevellock.h>
 #include <futex-internal.h>
 
-#ifndef lll_trylock_elision
-#define lll_trylock_elision(a,t) lll_trylock(a)
-#endif
-
-#ifndef FORCE_ELISION
-#define FORCE_ELISION(m, s)
-#endif
-
 int
 __pthread_mutex_trylock (pthread_mutex_t *mutex)
 {
diff --git a/nptl/pthread_mutex_unlock.c b/nptl/pthread_mutex_unlock.c
index e29bb7f..3b5ccda 100644
--- a/nptl/pthread_mutex_unlock.c
+++ b/nptl/pthread_mutex_unlock.c
@@ -24,10 +24,6 @@
 #include <stap-probe.h>
 #include <futex-internal.h>
 
-#ifndef lll_unlock_elision
-#define lll_unlock_elision(a,b,c) ({ lll_unlock (a,c); 0; })
-#endif
-
 static int
 __pthread_mutex_unlock_full (pthread_mutex_t *mutex, int decr)
      __attribute_noinline__;
diff --git a/sysdeps/nptl/lowlevellock.h b/sysdeps/nptl/lowlevellock.h
index 176ba96..be60c9a 100644
--- a/sysdeps/nptl/lowlevellock.h
+++ b/sysdeps/nptl/lowlevellock.h
@@ -20,6 +20,7 @@
 #define _LOWLEVELLOCK_H	1
 
 #include <atomic.h>
+#include <elision-conf.h>
 #include <lowlevellock-futex.h>
 #include <time.h>
 
@@ -160,4 +161,105 @@ libc_hidden_proto (__lll_lock_wait)
 #define LLL_LOCK_INITIALIZER		(0)
 #define LLL_LOCK_INITIALIZER_LOCKED	(1)
 
+/* Elision support.  */
+
+#if ENABLE_ELISION_SUPPORT
+/* 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.  */
+extern int __pthread_force_elision;
+libc_hidden_proto (__pthread_force_elision)
+
+extern void __lll_elision_init (void) attribute_hidden;
+extern int __lll_clocklock_elision (int *futex, short *adapt_count,
+                                    clockid_t clockid,
+				    const struct __timespec64 *timeout,
+				    int private);
+libc_hidden_proto (__lll_clocklock_elision)
+
+extern int __lll_lock_elision (int *futex, short *adapt_count, int private);
+libc_hidden_proto (__lll_lock_elision)
+
+# if ELISION_UNLOCK_NEEDS_ADAPT_COUNT
+extern int __lll_unlock_elision (int *lock, short *adapt_count, int private);
+# else
+extern int __lll_unlock_elision (int *lock, int private);
+# endif
+libc_hidden_proto (__lll_unlock_elision)
+
+extern int __lll_trylock_elision (int *lock, short *adapt_count);
+libc_hidden_proto (__lll_trylock_elision)
+
+# define lll_clocklock_elision(futex, adapt_count, clockid, timeout, private) \
+  __lll_clocklock_elision (&(futex), &(adapt_count), clockid, timeout, private)
+# define lll_lock_elision(futex, adapt_count, private)		\
+  __lll_lock_elision (&(futex), &(adapt_count), private)
+# define lll_trylock_elision(futex, adapt_count)	\
+  __lll_trylock_elision (&(futex), &(adapt_count))
+# if ELISION_UNLOCK_NEEDS_ADAPT_COUNT
+#  define lll_unlock_elision(futex, adapt_count, private)	\
+  __lll_unlock_elision (&(futex), &(adapt_count), private)
+# else
+#  define lll_unlock_elision(futex, adapt_count, private)	\
+  __lll_unlock_elision (&(futex), private)
+# endif
+
+/* Automatically enable elision for existing user lock kinds.  */
+# define FORCE_ELISION(m, s)                                            \
+  if (__pthread_force_elision)                                          \
+    {                                                                   \
+      /* See concurrency notes regarding __kind in                      \
+         struct __pthread_mutex_s in                                    \
+         sysdeps/nptl/bits/thread-shared-types.h.                       \
+                                                                        \
+         There are the following cases for the kind of a mutex          \
+         (The mask PTHREAD_MUTEX_ELISION_FLAGS_NP covers the flags      \
+         PTHREAD_MUTEX_ELISION_NP and PTHREAD_MUTEX_NO_ELISION_NP where \
+         only one of both flags can be set):                            \
+         - both flags are not set:                                      \
+         This is the first lock operation for this mutex.  Enable       \
+         elision as it is not enabled so far.                           \
+         Note: It can happen that multiple threads are calling e.g.     \
+         pthread_mutex_lock at the same time as the first lock          \
+         operation for this mutex.  Then elision is enabled for this    \
+         mutex by multiple threads.  Storing with relaxed MO is enough  \
+         as all threads will store the same new value for the kind of   \
+         the mutex.  But we have to ensure that we always use the       \
+         elision path regardless if this thread has enabled elision or  \
+         another one.                                                   \
+                                                                        \
+         - PTHREAD_MUTEX_ELISION_NP flag is set:                        \
+         Elision was already enabled for this mutex by a previous lock  \
+         operation.  See case above.  Just use the elision path.        \
+                                                                        \
+         - PTHREAD_MUTEX_NO_ELISION_NP flag is set:                     \
+         Elision was explicitly disabled by pthread_mutexattr_settype.  \
+         Do not use the elision path.                                   \
+         Note: The flag PTHREAD_MUTEX_NO_ELISION_NP will never be       \
+         changed after mutex initialization.  */                        \
+      int mutex_kind = atomic_load_relaxed (&((m)->__data.__kind));     \
+      if ((mutex_kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0)           \
+        {                                                               \
+          mutex_kind |= PTHREAD_MUTEX_ELISION_NP;                       \
+          atomic_store_relaxed (&((m)->__data.__kind), mutex_kind);     \
+        }                                                               \
+      if ((mutex_kind & PTHREAD_MUTEX_ELISION_NP) != 0)                 \
+        {                                                               \
+          s;                                                            \
+        }                                                               \
+    }
+
+#else /* !ENABLE_ELISION_SUPPORT */
+
+# define lll_clocklock_elision(futex, adapt_count, clockid, abstime, private) \
+  __futex_clocklock64 (&(futex), clockid, abstime, private)
+# define lll_lock_elision(lock, try_lock, private)	\
+  ({ lll_lock (lock, private); 0; })
+# define lll_trylock_elision(a,t) lll_trylock(a)
+# define lll_unlock_elision(a,b,c) ({ lll_unlock (a,c); 0; })
+# define FORCE_ELISION(m, s)
+
+#endif /* !ENABLE_ELISION_SUPPORT */
+
 #endif	/* lowlevellock.h */
diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_timedlock.c b/sysdeps/pthread/elision-conf.h
index 6f8b06d..946f2c4 100644
--- a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_timedlock.c
+++ b/sysdeps/pthread/elision-conf.h
@@ -1,5 +1,5 @@
-/* Elided version of pthread_mutex_timedlock.
-   Copyright (C) 2015-2021 Free Software Foundation, Inc.
+/* elision-conf.h: Lock elision  configuration.  Stub version.
+   Copyright (C) 2021 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
@@ -16,7 +16,14 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <elision-conf.h>
-#include <force-elision.h>
+#ifndef _ELISION_CONF_H
+#define _ELISION_CONF_H 1
 
-#include <nptl/pthread_mutex_timedlock.c>
+/* No elision support by default.  */
+#define ENABLE_ELISION_SUPPORT 0
+
+/* Whether __lll_unlock_elision expects a pointer argument to the
+   adaptive counter.  Here, an unused arbitrary value.  */
+#define ELISION_UNLOCK_NEEDS_ADAPT_COUNT 0
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile
index cc2f804..a093cda 100644
--- a/sysdeps/unix/sysv/linux/powerpc/Makefile
+++ b/sysdeps/unix/sysv/linux/powerpc/Makefile
@@ -32,7 +32,5 @@ endif
 
 ifeq ($(subdir),nptl)
 libpthread-routines += sysdep
-libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
-			      elision-trylock
 libpthread-shared-only-routines += sysdep
 endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-conf.c b/sysdeps/unix/sysv/linux/powerpc/elision-conf.c
index 003bc82..1ecc2a7 100644
--- a/sysdeps/unix/sysv/linux/powerpc/elision-conf.c
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-conf.c
@@ -51,12 +51,6 @@ struct elision_config __elision_aconf =
     .skip_trylock_internal_abort = 3,
   };
 
-/* Force elision for all new locks.  This is used to decide whether existing
-   DEFAULT locks should be automatically use elision in pthread_mutex_lock().
-   Disabled for suid programs.  Only used when elision is available.  */
-
-int __pthread_force_elision attribute_hidden = 0;
-
 #if HAVE_TUNABLES
 static inline void
 __always_inline
@@ -104,10 +98,8 @@ TUNABLE_CALLBACK_FNDECL (skip_trylock_internal_abort, int32_t);
 
 /* Initialize elision.  */
 
-static void
-elision_init (int argc __attribute__ ((unused)),
-	      char **argv  __attribute__ ((unused)),
-	      char **environ)
+void
+__lll_elision_init (void)
 {
 #if HAVE_TUNABLES
   /* Elision depends on tunables and must be explicitly turned on by setting
@@ -150,17 +142,3 @@ elision_init (int argc __attribute__ ((unused)),
   if (!__pthread_force_elision)
     __elision_aconf.try_tbegin = 0; /* Disable elision on rwlocks.  */
 }
-
-#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
index 8c444d8..86c677f 100644
--- a/sysdeps/unix/sysv/linux/powerpc/elision-conf.h
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-conf.h
@@ -22,6 +22,9 @@
 #include <pthread.h>
 #include <time.h>
 
+#define ENABLE_ELISION_SUPPORT 1
+#define ELISION_UNLOCK_NEEDS_ADAPT_COUNT 1
+
 /* Should make sure there is no false sharing on this.  */
 struct elision_config
 {
@@ -34,9 +37,4 @@ struct elision_config
 
 extern struct elision_config __elision_aconf 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
index 767d439..f5fb46d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
@@ -23,12 +23,6 @@
 #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
@@ -84,3 +78,4 @@ __lll_lock_elision (int *lock, short *adapt_count, EXTRAARG int pshared)
 use_lock:
   return LLL_LOCK ((*lock), pshared);
 }
+libc_hidden_def (__lll_lock_elision)
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
index ab92f4d..5ebbced 100644
--- a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
@@ -67,3 +67,4 @@ __lll_trylock_elision (int *futex, short *adapt_count)
 use_lock:
   return lll_trylock (*futex);
 }
+libc_hidden_def (__lll_trylock_elision)
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c b/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
index 35044af..5aa8752 100644
--- a/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
+++ b/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
@@ -41,3 +41,4 @@ __lll_unlock_elision (int *lock, short *adapt_count, int pshared)
     }
   return 0;
 }
+libc_hidden_def (__lll_unlock_elision)
diff --git a/sysdeps/unix/sysv/linux/powerpc/force-elision.h b/sysdeps/unix/sysv/linux/powerpc/force-elision.h
deleted file mode 100644
index d1fa611..0000000
--- a/sysdeps/unix/sysv/linux/powerpc/force-elision.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/* force-elision.h: Automatic enabling of elision for mutexes
-   Copyright (C) 2015-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-/* Automatically enable elision for existing user lock kinds.  */
-#define FORCE_ELISION(m, s)						\
-  if (__pthread_force_elision)						\
-    {									\
-      /* See concurrency notes regarding __kind in			\
-	 struct __pthread_mutex_s in					\
-	 sysdeps/nptl/bits/thread-shared-types.h.			\
-									\
-	 There are the following cases for the kind of a mutex		\
-	 (The mask PTHREAD_MUTEX_ELISION_FLAGS_NP covers the flags	\
-	 PTHREAD_MUTEX_ELISION_NP and PTHREAD_MUTEX_NO_ELISION_NP where	\
-	 only one of both flags can be set):				\
-	 - both flags are not set:					\
-	 This is the first lock operation for this mutex.  Enable	\
-	 elision as it is not enabled so far.				\
-	 Note: It can happen that multiple threads are calling e.g.	\
-	 pthread_mutex_lock at the same time as the first lock		\
-	 operation for this mutex.  Then elision is enabled for this	\
-	 mutex by multiple threads.  Storing with relaxed MO is enough	\
-	 as all threads will store the same new value for the kind of	\
-	 the mutex.  But we have to ensure that we always use the	\
-	 elision path regardless if this thread has enabled elision or	\
-	 another one.							\
-									\
-	 - PTHREAD_MUTEX_ELISION_NP flag is set:			\
-	 Elision was already enabled for this mutex by a previous lock	\
-	 operation.  See case above.  Just use the elision path.	\
-									\
-	 - PTHREAD_MUTEX_NO_ELISION_NP flag is set:			\
-	 Elision was explicitly disabled by pthread_mutexattr_settype.	\
-	 Do not use the elision path.					\
-	 Note: The flag PTHREAD_MUTEX_NO_ELISION_NP will never be	\
-	 changed after mutex initialization.  */			\
-      int mutex_kind = atomic_load_relaxed (&((m)->__data.__kind));	\
-      if ((mutex_kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0)		\
-	{								\
-	  mutex_kind |= PTHREAD_MUTEX_ELISION_NP;			\
-	  atomic_store_relaxed (&((m)->__data.__kind), mutex_kind);	\
-	}								\
-      if ((mutex_kind & PTHREAD_MUTEX_ELISION_NP) != 0)			\
-	{								\
-	  s;								\
-	}								\
-    }
diff --git a/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h b/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
deleted file mode 100644
index 6596202..0000000
--- a/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* PowerPC specific lock definitions.
-   Copyright (C) 2015-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-#ifndef _POWERPC_LOWLEVELLOCK_H
-#define _POWERPC_LOWLEVELLOCK_H 1
-
-#include <sysdeps/nptl/lowlevellock.h>
-
-/* Transactional lock elision definitions.  */
-extern int __lll_clocklock_elision
-  (int *futex, short *adapt_count,
-   clockid_t clockid, const struct __timespec64 *timeout, int private)
-  attribute_hidden;
-
-#define lll_clocklock_elision(futex, adapt_count, clockid, timeout, private) \
-  __lll_clocklock_elision (&(futex), &(adapt_count), clockid, timeout, private)
-
-extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
-  attribute_hidden;
-
-extern int __lll_unlock_elision (int *lock, short *adapt_count, 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, adapt_count, private) \
-  __lll_unlock_elision (&(futex), &(adapt_count), private)
-#define lll_trylock_elision(futex, adapt_count) \
-  __lll_trylock_elision (&(futex), &(adapt_count))
-
-#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_cond_lock.c b/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_cond_lock.c
deleted file mode 100644
index f33bac7..0000000
--- a/sysdeps/unix/sysv/linux/powerpc/pthread_mutex_cond_lock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright (C) 2015-2021 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
-   <https://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 <nptl/pthread_mutex_cond_lock.c>
diff --git a/sysdeps/unix/sysv/linux/s390/Makefile b/sysdeps/unix/sysv/linux/s390/Makefile
index d9db1b5..3de9579 100644
--- a/sysdeps/unix/sysv/linux/s390/Makefile
+++ b/sysdeps/unix/sysv/linux/s390/Makefile
@@ -12,9 +12,6 @@ gen-as-const-headers += ucontext_i.sym
 endif
 
 ifeq ($(subdir),nptl)
-libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
-			      elision-trylock
-
 elision-CFLAGS = -mhtm -msoft-float
 CFLAGS-elision-lock.c = $(elision-CFLAGS)
 CFLAGS-elision-timed.c = $(elision-CFLAGS)
diff --git a/sysdeps/unix/sysv/linux/s390/elision-conf.c b/sysdeps/unix/sysv/linux/s390/elision-conf.c
index c05c046..a7a90e7 100644
--- a/sysdeps/unix/sysv/linux/s390/elision-conf.c
+++ b/sysdeps/unix/sysv/linux/s390/elision-conf.c
@@ -51,13 +51,6 @@ struct elision_config __elision_aconf =
     .skip_trylock_internal_abort = 3,
   };
 
-/* 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 = 0;
-
 #if HAVE_TUNABLES
 static inline void
 __always_inline
@@ -104,10 +97,8 @@ TUNABLE_CALLBACK_FNDECL (skip_trylock_internal_abort, int32_t);
 
 /* Initialize elison.  */
 
-static void
-elision_init (int argc __attribute__ ((unused)),
-	      char **argv  __attribute__ ((unused)),
-	      char **environ)
+void
+__lll_elision_init (void)
 {
 #if HAVE_TUNABLES
   /* Elision depends on tunables and must be explicitly turned on by setting
@@ -130,17 +121,3 @@ elision_init (int argc __attribute__ ((unused)),
   if (!__pthread_force_elision)
     __elision_aconf.try_tbegin = 0; /* Disable elision on rwlocks.  */
 }
-
-#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/s390/elision-conf.h b/sysdeps/unix/sysv/linux/s390/elision-conf.h
index 846c5ff..cb8a784 100644
--- a/sysdeps/unix/sysv/linux/s390/elision-conf.h
+++ b/sysdeps/unix/sysv/linux/s390/elision-conf.h
@@ -21,6 +21,9 @@
 #include <pthread.h>
 #include <time.h>
 
+#define ENABLE_ELISION_SUPPORT 1
+#define ELISION_UNLOCK_NEEDS_ADAPT_COUNT 1
+
 /* Should make sure there is no false sharing on this.  */
 
 struct elision_config
@@ -34,9 +37,4 @@ struct elision_config
 
 extern struct elision_config __elision_aconf 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/s390/elision-lock.c b/sysdeps/unix/sysv/linux/s390/elision-lock.c
index 26474c6..d5dd602 100644
--- a/sysdeps/unix/sysv/linux/s390/elision-lock.c
+++ b/sysdeps/unix/sysv/linux/s390/elision-lock.c
@@ -23,12 +23,6 @@
 #include <elision-conf.h>
 #include <stdint.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
@@ -123,3 +117,4 @@ __lll_lock_elision (int *futex, short *adapt_count, EXTRAARG int private)
      succeed.  */
   return LLL_LOCK ((*futex), private);
 }
+libc_hidden_def (__lll_lock_elision)
diff --git a/sysdeps/unix/sysv/linux/s390/elision-trylock.c b/sysdeps/unix/sysv/linux/s390/elision-trylock.c
index 484c3cc..2470955 100644
--- a/sysdeps/unix/sysv/linux/s390/elision-trylock.c
+++ b/sysdeps/unix/sysv/linux/s390/elision-trylock.c
@@ -95,3 +95,4 @@ __lll_trylock_elision (int *futex, short *adapt_count)
      succeed.  */
   return lll_trylock (*futex);
 }
+libc_hidden_def (__lll_trylock_elision)
diff --git a/sysdeps/unix/sysv/linux/s390/elision-unlock.c b/sysdeps/unix/sysv/linux/s390/elision-unlock.c
index 5ac6758..87a5bd7 100644
--- a/sysdeps/unix/sysv/linux/s390/elision-unlock.c
+++ b/sysdeps/unix/sysv/linux/s390/elision-unlock.c
@@ -59,3 +59,4 @@ __lll_unlock_elision(int *futex, short *adapt_count, int private)
     }
   return 0;
 }
+libc_hidden_def (__lll_unlock_elision)
diff --git a/sysdeps/unix/sysv/linux/s390/force-elision.h b/sysdeps/unix/sysv/linux/s390/force-elision.h
deleted file mode 100644
index 154740d..0000000
--- a/sysdeps/unix/sysv/linux/s390/force-elision.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/* Automatic enabling of elision for mutexes
-   Copyright (C) 2014-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-/* Automatically enable elision for existing user lock kinds.  */
-#define FORCE_ELISION(m, s)						\
-  if (__pthread_force_elision)						\
-    {									\
-      /* See concurrency notes regarding __kind in			\
-	 struct __pthread_mutex_s in					\
-	 sysdeps/nptl/bits/thread-shared-types.h.			\
-									\
-	 There are the following cases for the kind of a mutex		\
-	 (The mask PTHREAD_MUTEX_ELISION_FLAGS_NP covers the flags	\
-	 PTHREAD_MUTEX_ELISION_NP and PTHREAD_MUTEX_NO_ELISION_NP where	\
-	 only one of both flags can be set):				\
-	 - both flags are not set:					\
-	 This is the first lock operation for this mutex.  Enable	\
-	 elision as it is not enabled so far.				\
-	 Note: It can happen that multiple threads are calling e.g.	\
-	 pthread_mutex_lock at the same time as the first lock		\
-	 operation for this mutex.  Then elision is enabled for this	\
-	 mutex by multiple threads.  Storing with relaxed MO is enough	\
-	 as all threads will store the same new value for the kind of	\
-	 the mutex.  But we have to ensure that we always use the	\
-	 elision path regardless if this thread has enabled elision or	\
-	 another one.							\
-									\
-	 - PTHREAD_MUTEX_ELISION_NP flag is set:			\
-	 Elision was already enabled for this mutex by a previous lock	\
-	 operation.  See case above.  Just use the elision path.	\
-									\
-	 - PTHREAD_MUTEX_NO_ELISION_NP flag is set:			\
-	 Elision was explicitly disabled by pthread_mutexattr_settype.	\
-	 Do not use the elision path.					\
-	 Note: The flag PTHREAD_MUTEX_NO_ELISION_NP will never be	\
-	 changed after mutex initialization.  */			\
-      int mutex_kind = atomic_load_relaxed (&((m)->__data.__kind));	\
-      if ((mutex_kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0)		\
-	{								\
-	  mutex_kind |= PTHREAD_MUTEX_ELISION_NP;			\
-	  atomic_store_relaxed (&((m)->__data.__kind), mutex_kind);	\
-	}								\
-      if ((mutex_kind & PTHREAD_MUTEX_ELISION_NP) != 0)			\
-	{								\
-	  s;								\
-	}								\
-    }
diff --git a/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/sysdeps/unix/sysv/linux/s390/lowlevellock.h
deleted file mode 100644
index 98d78f52..0000000
--- a/sysdeps/unix/sysv/linux/s390/lowlevellock.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* Copyright (C) 2003-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
-
-   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
-   <https://www.gnu.org/licenses/>.  */
-
-#ifndef _S390_LOWLEVELLOCK_H
-#define _S390_LOWLEVELLOCK_H	1
-
-#include <sysdeps/nptl/lowlevellock.h>
-
-/* Transactional lock elision definitions.  */
-extern int __lll_clocklock_elision
-  (int *futex, short *adapt_count,
-   clockid_t clockid, const struct __timespec64 *timeout, int private)
-  attribute_hidden;
-
-#  define lll_clocklock_elision(futex, adapt_count, clockid, timeout, private) \
-  __lll_clocklock_elision (&(futex), &(adapt_count), clockid, timeout, private)
-
-extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
-  attribute_hidden;
-
-extern int __lll_unlock_elision(int *futex, short *adapt_count, int private)
-  attribute_hidden;
-
-extern int __lll_trylock_elision(int *futex, 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, adapt_count, private) \
-  __lll_unlock_elision (&(futex), &(adapt_count), private)
-#  define lll_trylock_elision(futex, adapt_count) \
-  __lll_trylock_elision(&(futex), &(adapt_count))
-
-#endif	/* lowlevellock.h */
diff --git a/sysdeps/unix/sysv/linux/s390/pthread_mutex_cond_lock.c b/sysdeps/unix/sysv/linux/s390/pthread_mutex_cond_lock.c
deleted file mode 100644
index 8398ff6..0000000
--- a/sysdeps/unix/sysv/linux/s390/pthread_mutex_cond_lock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright (C) 2014-2021 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
-   <https://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 <nptl/pthread_mutex_cond_lock.c>
diff --git a/sysdeps/unix/sysv/linux/s390/pthread_mutex_timedlock.c b/sysdeps/unix/sysv/linux/s390/pthread_mutex_timedlock.c
deleted file mode 100644
index 8538f15..0000000
--- a/sysdeps/unix/sysv/linux/s390/pthread_mutex_timedlock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Elided version of pthread_mutex_timedlock.
-   Copyright (C) 2014-2021 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
-   <https://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/s390/pthread_mutex_trylock.c b/sysdeps/unix/sysv/linux/s390/pthread_mutex_trylock.c
deleted file mode 100644
index c4de136..0000000
--- a/sysdeps/unix/sysv/linux/s390/pthread_mutex_trylock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Elided version of pthread_mutex_trylock.
-   Copyright (C) 2014-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <elision-conf.h>
-#include <force-elision.h>
-
-#include <nptl/pthread_mutex_trylock.c>
diff --git a/sysdeps/unix/sysv/linux/x86/Makefile b/sysdeps/unix/sysv/linux/x86/Makefile
index 6bfd6be..9dfdd68 100644
--- a/sysdeps/unix/sysv/linux/x86/Makefile
+++ b/sysdeps/unix/sysv/linux/x86/Makefile
@@ -12,8 +12,6 @@ sysdep_headers += sys/elf.h sys/perm.h sys/reg.h sys/vm86.h sys/debugreg.h sys/i
 endif
 
 ifeq ($(subdir),nptl)
-libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
-			      elision-trylock
 CFLAGS-elision-lock.c += -mrtm
 CFLAGS-elision-unlock.c += -mrtm
 CFLAGS-elision-timed.c += -mrtm
diff --git a/sysdeps/unix/sysv/linux/x86/elision-conf.c b/sysdeps/unix/sysv/linux/x86/elision-conf.c
index e8ffe02..a5a4043 100644
--- a/sysdeps/unix/sysv/linux/x86/elision-conf.c
+++ b/sysdeps/unix/sysv/linux/x86/elision-conf.c
@@ -48,13 +48,6 @@ struct elision_config __elision_aconf =
     .skip_trylock_internal_abort = 3,
   };
 
-/* 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 = 0;
-
 #if HAVE_TUNABLES
 static __always_inline void
 do_set_elision_enable (int32_t elision_enable)
@@ -98,10 +91,8 @@ TUNABLE_CALLBACK_FNDECL (skip_trylock_internal_abort, int32_t);
 
 /* Initialize elision.  */
 
-static void
-elision_init (int argc __attribute__ ((unused)),
-	      char **argv  __attribute__ ((unused)),
-	      char **environ)
+void
+__lll_elision_init (void)
 {
 #if HAVE_TUNABLES
   /* Elision depends on tunables and must be explicitly turned on by setting
@@ -122,15 +113,3 @@ elision_init (int argc __attribute__ ((unused)),
   if (!__pthread_force_elision)
     __elision_aconf.retry_try_xbegin = 0; /* Disable elision on rwlocks.  */
 }
-
-#ifdef SHARED
-# define INIT_SECTION ".init_array"
-#else
-# define INIT_SECTION ".preinit_array"
-#endif
-
-void (*const __pthread_init_array []) (int, char **, char **)
-  __attribute__ ((section (INIT_SECTION), aligned (sizeof (void *)))) =
-{
-  &elision_init
-};
diff --git a/sysdeps/unix/sysv/linux/x86/elision-conf.h b/sysdeps/unix/sysv/linux/x86/elision-conf.h
index bc5e73b..6016820 100644
--- a/sysdeps/unix/sysv/linux/x86/elision-conf.h
+++ b/sysdeps/unix/sysv/linux/x86/elision-conf.h
@@ -21,6 +21,9 @@
 #include <pthread.h>
 #include <time.h>
 
+#define ENABLE_ELISION_SUPPORT 1
+#define ELISION_UNLOCK_NEEDS_ADAPT_COUNT 0
+
 /* Should make sure there is no false sharing on this.  */
 
 struct elision_config
@@ -33,9 +36,4 @@ struct elision_config
 
 extern struct elision_config __elision_aconf 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/x86/elision-lock.c b/sysdeps/unix/sysv/linux/x86/elision-lock.c
index 16d4f6e..ea5f373 100644
--- a/sysdeps/unix/sysv/linux/x86/elision-lock.c
+++ b/sysdeps/unix/sysv/linux/x86/elision-lock.c
@@ -22,12 +22,6 @@
 #include "hle.h"
 #include <elision-conf.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
@@ -105,3 +99,4 @@ __lll_lock_elision (int *futex, short *adapt_count, EXTRAARG int private)
   /* Use a normal lock here.  */
   return LLL_LOCK ((*futex), private);
 }
+libc_hidden_def (__lll_lock_elision)
diff --git a/sysdeps/unix/sysv/linux/x86/elision-trylock.c b/sysdeps/unix/sysv/linux/x86/elision-trylock.c
index ef9aa23..5e689f5 100644
--- a/sysdeps/unix/sysv/linux/x86/elision-trylock.c
+++ b/sysdeps/unix/sysv/linux/x86/elision-trylock.c
@@ -73,3 +73,4 @@ __lll_trylock_elision (int *futex, short *adapt_count)
 
   return lll_trylock (*futex);
 }
+libc_hidden_def (__lll_trylock_elision)
diff --git a/sysdeps/unix/sysv/linux/x86/elision-unlock.c b/sysdeps/unix/sysv/linux/x86/elision-unlock.c
index edd8b1f..eb877bc 100644
--- a/sysdeps/unix/sysv/linux/x86/elision-unlock.c
+++ b/sysdeps/unix/sysv/linux/x86/elision-unlock.c
@@ -31,3 +31,4 @@ __lll_unlock_elision(int *lock, int private)
     lll_unlock ((*lock), private);
   return 0;
 }
+libc_hidden_def (__lll_unlock_elision)
diff --git a/sysdeps/unix/sysv/linux/x86/force-elision.h b/sysdeps/unix/sysv/linux/x86/force-elision.h
deleted file mode 100644
index 3c0a0e0..0000000
--- a/sysdeps/unix/sysv/linux/x86/force-elision.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/* force-elision.h: Automatic enabling of elision for mutexes
-   Copyright (C) 2013-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-/* Automatically enable elision for existing user lock kinds.  */
-#define FORCE_ELISION(m, s)						\
-  if (__pthread_force_elision)						\
-    {									\
-      /* See concurrency notes regarding __kind in			\
-	 struct __pthread_mutex_s in					\
-	 sysdeps/nptl/bits/thread-shared-types.h.			\
-									\
-	 There are the following cases for the kind of a mutex		\
-	 (The mask PTHREAD_MUTEX_ELISION_FLAGS_NP covers the flags	\
-	 PTHREAD_MUTEX_ELISION_NP and PTHREAD_MUTEX_NO_ELISION_NP where	\
-	 only one of both flags can be set):				\
-	 - both flags are not set:					\
-	 This is the first lock operation for this mutex.  Enable	\
-	 elision as it is not enabled so far.				\
-	 Note: It can happen that multiple threads are calling e.g.	\
-	 pthread_mutex_lock at the same time as the first lock		\
-	 operation for this mutex.  Then elision is enabled for this	\
-	 mutex by multiple threads.  Storing with relaxed MO is enough	\
-	 as all threads will store the same new value for the kind of	\
-	 the mutex.  But we have to ensure that we always use the	\
-	 elision path regardless if this thread has enabled elision or	\
-	 another one.							\
-									\
-	 - PTHREAD_MUTEX_ELISION_NP flag is set:			\
-	 Elision was already enabled for this mutex by a previous lock	\
-	 operation.  See case above.  Just use the elision path.	\
-									\
-	 - PTHREAD_MUTEX_NO_ELISION_NP flag is set:			\
-	 Elision was explicitly disabled by pthread_mutexattr_settype.	\
-	 Do not use the elision path.					\
-	 Note: The flag PTHREAD_MUTEX_NO_ELISION_NP will never be	\
-	 changed after mutex initialization.  */			\
-      int mutex_kind = atomic_load_relaxed (&((m)->__data.__kind));	\
-      if ((mutex_kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0)		\
-	{								\
-	  mutex_kind |= PTHREAD_MUTEX_ELISION_NP;			\
-	  atomic_store_relaxed (&((m)->__data.__kind), mutex_kind);	\
-	}								\
-      if ((mutex_kind & PTHREAD_MUTEX_ELISION_NP) != 0)			\
-	{								\
-	  s;								\
-	}								\
-    }
diff --git a/sysdeps/unix/sysv/linux/x86/lowlevellock.h b/sysdeps/unix/sysv/linux/x86/lowlevellock.h
index 435a190..7205bca 100644
--- a/sysdeps/unix/sysv/linux/x86/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/x86/lowlevellock.h
@@ -82,30 +82,6 @@ __lll_cas_lock (int *futex)
        __lll_unlock (&(lock), private);					     \
    }))
 
-extern int __lll_clocklock_elision (int *futex, short *adapt_count,
-                                    clockid_t clockid,
-				    const struct __timespec64 *timeout,
-				    int private) attribute_hidden;
-
-#define lll_clocklock_elision(futex, adapt_count, clockid, timeout, private) \
-  __lll_clocklock_elision (&(futex), &(adapt_count), clockid, timeout, private)
-
-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, adapt_count, private) \
-  __lll_unlock_elision (&(futex), private)
-#define lll_trylock_elision(futex, adapt_count) \
-  __lll_trylock_elision (&(futex), &(adapt_count))
-
 #endif  /* !__ASSEMBLER__ */
 
 #endif	/* lowlevellock.h */
diff --git a/sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c b/sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c
deleted file mode 100644
index 7604f87..0000000
--- a/sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright (C) 2013-2021 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
-   <https://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 <nptl/pthread_mutex_cond_lock.c>
diff --git a/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c b/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c
deleted file mode 100644
index 3fbfe02..0000000
--- a/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Elided version of pthread_mutex_timedlock.
-   Copyright (C) 2011-2021 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
-   <https://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/x86/pthread_mutex_trylock.c b/sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c
deleted file mode 100644
index c7abb5a..0000000
--- a/sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Elided version of pthread_mutex_trylock.
-   Copyright (C) 2011-2021 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <elision-conf.h>
-#include "force-elision.h"
-
-#include "nptl/pthread_mutex_trylock.c"