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authorRoland McGrath <roland@hack.frob.com>2014-05-14 15:32:18 -0700
committerRoland McGrath <roland@hack.frob.com>2014-05-14 15:32:18 -0700
commit039890a67818211dba8207feab3832b0fcc391d2 (patch)
treed7b545eb3c8d66e5cc0b0055c8eaf197308cc5d5 /sysdeps/unix/sysv
parent65c89320e2968c55feddfbdacd09c0a6cc0b006c (diff)
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Move remaining files out of nptl/sysdeps/unix/sysv/linux/x86/.
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r--sysdeps/unix/sysv/linux/x86/Makefile6
-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-conf.c81
-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-conf.h43
-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-lock.c95
-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-timed.c26
-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-trylock.c71
-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-unlock.c33
-rw-r--r--sysdeps/unix/sysv/linux/x86/force-elision.h31
-rw-r--r--sysdeps/unix/sysv/linux/x86/hle.h75
-rw-r--r--sysdeps/unix/sysv/linux/x86/init-arch.c1
-rw-r--r--sysdeps/unix/sysv/linux/x86/init-arch.h1
-rw-r--r--sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c22
-rw-r--r--sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c22
-rw-r--r--sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c22
-rw-r--r--sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c22
15 files changed, 551 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/Makefile b/sysdeps/unix/sysv/linux/x86/Makefile
index 6412a9ef36..012125f30c 100644
--- a/sysdeps/unix/sysv/linux/x86/Makefile
+++ b/sysdeps/unix/sysv/linux/x86/Makefile
@@ -16,3 +16,9 @@ abi-x32-ld-soname := ld-linux-x32.so.2
ifeq ($(subdir),misc)
sysdep_headers += sys/elf.h sys/perm.h sys/reg.h sys/vm86.h sys/debugreg.h sys/io.h
endif
+
+ifeq ($(subdir),nptl)
+libpthread-sysdep_routines += init-arch
+libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
+ elision-trylock
+endif
diff --git a/sysdeps/unix/sysv/linux/x86/elision-conf.c b/sysdeps/unix/sysv/linux/x86/elision-conf.c
new file mode 100644
index 0000000000..e6f5d6d1ab
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/elision-conf.c
@@ -0,0 +1,81 @@
+/* elision-conf.c: Lock elision tunable parameters.
+ Copyright (C) 2013-2014 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 <init-arch.h>
+#include <elision-conf.h>
+#include <unistd.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 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. */
+ .retry_try_xbegin = 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 = HAS_RTM;
+#ifdef ENABLE_LOCK_ELISION
+ __pthread_force_elision = __libc_enable_secure ? 0 : __elision_available;
+#endif
+}
+
+#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
new file mode 100644
index 0000000000..6790b5aa13
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/elision-conf.h
@@ -0,0 +1,43 @@
+/* elision-conf.h: Lock elision tunable parameters.
+ Copyright (C) 2013-2014 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 <cpuid.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 retry_try_xbegin;
+ 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/x86/elision-lock.c b/sysdeps/unix/sysv/linux/x86/elision-lock.c
new file mode 100644
index 0000000000..385ac31a52
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/elision-lock.c
@@ -0,0 +1,95 @@
+/* elision-lock.c: Elided pthread mutex lock.
+ Copyright (C) 2011-2014 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 "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
+#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 *futex, short *adapt_count, EXTRAARG int private)
+{
+ if (*adapt_count <= 0)
+ {
+ unsigned status;
+ int try_xbegin;
+
+ for (try_xbegin = aconf.retry_try_xbegin;
+ try_xbegin > 0;
+ try_xbegin--)
+ {
+ if ((status = _xbegin()) == _XBEGIN_STARTED)
+ {
+ if (*futex == 0)
+ return 0;
+
+ /* Lock was busy. Fall back to normal locking.
+ Could also _xend here but xabort with 0xff code
+ is more visible in the profiler. */
+ _xabort (_ABORT_LOCK_BUSY);
+ }
+
+ if (!(status & _XABORT_RETRY))
+ {
+ if ((status & _XABORT_EXPLICIT)
+ && _XABORT_CODE (status) == _ABORT_LOCK_BUSY)
+ {
+ /* Right now we skip here. Better would be to wait a bit
+ and retry. This likely needs some spinning. */
+ if (*adapt_count != aconf.skip_lock_busy)
+ *adapt_count = aconf.skip_lock_busy;
+ }
+ /* Internal abort. There is no chance for retry.
+ Use the normal locking and next time use lock.
+ Be careful to avoid writing to the lock. */
+ else if (*adapt_count != aconf.skip_lock_internal_abort)
+ *adapt_count = aconf.skip_lock_internal_abort;
+ break;
+ }
+ }
+ }
+ else
+ {
+ /* Use a normal lock until the threshold counter runs out.
+ Lost updates possible. */
+ (*adapt_count)--;
+ }
+
+ /* Use a normal lock here. */
+ return LLL_LOCK ((*futex), private);
+}
diff --git a/sysdeps/unix/sysv/linux/x86/elision-timed.c b/sysdeps/unix/sysv/linux/x86/elision-timed.c
new file mode 100644
index 0000000000..4fdaa0f9e9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/elision-timed.c
@@ -0,0 +1,26 @@
+/* elision-timed.c: Lock elision timed lock.
+ Copyright (C) 2013-2014 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/x86/elision-trylock.c b/sysdeps/unix/sysv/linux/x86/elision-trylock.c
new file mode 100644
index 0000000000..a478ac18e3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/elision-trylock.c
@@ -0,0 +1,71 @@
+/* elision-trylock.c: Lock eliding trylock for pthreads.
+ Copyright (C) 2013-2014 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 "hle.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)
+{
+ /* Implement POSIX semantics by forbiding nesting
+ trylock. Sorry. After the abort the code is re-executed
+ non transactional and if the lock was already locked
+ return an error. */
+ _xabort (_ABORT_NESTED_TRYLOCK);
+
+ /* Only try a transaction if it's worth it. */
+ if (*adapt_count <= 0)
+ {
+ unsigned status;
+
+ if ((status = _xbegin()) == _XBEGIN_STARTED)
+ {
+ if (*futex == 0)
+ return 0;
+
+ /* Lock was busy. Fall back to normal locking.
+ Could also _xend here but xabort with 0xff code
+ is more visible in the profiler. */
+ _xabort (_ABORT_LOCK_BUSY);
+ }
+
+ if (!(status & _XABORT_RETRY))
+ {
+ /* Internal abort. No chance for retry. For future
+ locks don't try speculation for some time. */
+ if (*adapt_count != aconf.skip_trylock_internal_abort)
+ *adapt_count = aconf.skip_trylock_internal_abort;
+ }
+ /* Could do some retries here. */
+ }
+ else
+ {
+ /* Lost updates are possible, but harmless. */
+ (*adapt_count)--;
+ }
+
+ return lll_trylock (*futex);
+}
diff --git a/sysdeps/unix/sysv/linux/x86/elision-unlock.c b/sysdeps/unix/sysv/linux/x86/elision-unlock.c
new file mode 100644
index 0000000000..b9be19ccc4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/elision-unlock.c
@@ -0,0 +1,33 @@
+/* elision-unlock.c: Commit an elided pthread lock.
+ Copyright (C) 2013-2014 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 "hle.h"
+
+int
+__lll_unlock_elision(int *lock, int private)
+{
+ /* When the lock was free we're in a transaction.
+ When you crash here you unlocked a free lock. */
+ if (*lock == 0)
+ _xend();
+ else
+ lll_unlock ((*lock), private);
+ return 0;
+}
diff --git a/sysdeps/unix/sysv/linux/x86/force-elision.h b/sysdeps/unix/sysv/linux/x86/force-elision.h
new file mode 100644
index 0000000000..945f8867fc
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/force-elision.h
@@ -0,0 +1,31 @@
+/* force-elision.h: Automatic enabling of elision for mutexes
+ Copyright (C) 2013-2014 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/>. */
+
+/* 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/x86/hle.h b/sysdeps/unix/sysv/linux/x86/hle.h
new file mode 100644
index 0000000000..4a7b9e3bf7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/hle.h
@@ -0,0 +1,75 @@
+/* Shared RTM header. Emulate TSX intrinsics for compilers and assemblers
+ that do not support the intrinsics and instructions yet. */
+#ifndef _HLE_H
+#define _HLE_H 1
+
+#ifdef __ASSEMBLER__
+
+.macro XBEGIN target
+ .byte 0xc7,0xf8
+ .long \target-1f
+1:
+.endm
+
+.macro XEND
+ .byte 0x0f,0x01,0xd5
+.endm
+
+.macro XABORT code
+ .byte 0xc6,0xf8,\code
+.endm
+
+.macro XTEST
+ .byte 0x0f,0x01,0xd6
+.endm
+
+#endif
+
+/* Official RTM intrinsics interface matching gcc/icc, 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 _XBEGIN_STARTED (~0u)
+#define _XABORT_EXPLICIT (1 << 0)
+#define _XABORT_RETRY (1 << 1)
+#define _XABORT_CONFLICT (1 << 2)
+#define _XABORT_CAPACITY (1 << 3)
+#define _XABORT_DEBUG (1 << 4)
+#define _XABORT_NESTED (1 << 5)
+#define _XABORT_CODE(x) (((x) >> 24) & 0xff)
+
+#define _ABORT_LOCK_BUSY 0xff
+#define _ABORT_LOCK_IS_LOCKED 0xfe
+#define _ABORT_NESTED_TRYLOCK 0xfd
+
+#ifndef __ASSEMBLER__
+
+#define __force_inline __attribute__((__always_inline__)) inline
+
+static __force_inline int _xbegin(void)
+{
+ int ret = _XBEGIN_STARTED;
+ asm volatile (".byte 0xc7,0xf8 ; .long 0" : "+a" (ret) :: "memory");
+ return ret;
+}
+
+static __force_inline void _xend(void)
+{
+ asm volatile (".byte 0x0f,0x01,0xd5" ::: "memory");
+}
+
+static __force_inline void _xabort(const unsigned int status)
+{
+ asm volatile (".byte 0xc6,0xf8,%P0" :: "i" (status) : "memory");
+}
+
+static __force_inline int _xtest(void)
+{
+ unsigned char out;
+ asm volatile (".byte 0x0f,0x01,0xd6 ; setnz %0" : "=r" (out) :: "memory");
+ return out;
+}
+
+#endif
+#endif
diff --git a/sysdeps/unix/sysv/linux/x86/init-arch.c b/sysdeps/unix/sysv/linux/x86/init-arch.c
new file mode 100644
index 0000000000..00a94d83dc
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/init-arch.c
@@ -0,0 +1 @@
+#include <sysdeps/x86_64/multiarch/init-arch.c>
diff --git a/sysdeps/unix/sysv/linux/x86/init-arch.h b/sysdeps/unix/sysv/linux/x86/init-arch.h
new file mode 100644
index 0000000000..cd2d0befee
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/init-arch.h
@@ -0,0 +1 @@
+#include <sysdeps/x86_64/multiarch/init-arch.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
new file mode 100644
index 0000000000..34c705235a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c
@@ -0,0 +1,22 @@
+/* Copyright (C) 2013-2014 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/>. */
+
+/* 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/x86/pthread_mutex_lock.c b/sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c
new file mode 100644
index 0000000000..b8a33c1869
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c
@@ -0,0 +1,22 @@
+/* Elided version of pthread_mutex_lock.
+ Copyright (C) 2011-2014 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_lock.c"
diff --git a/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c b/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c
new file mode 100644
index 0000000000..d33dd2a112
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c
@@ -0,0 +1,22 @@
+/* Elided version of pthread_mutex_timedlock.
+ Copyright (C) 2011-2014 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_timedlock.c"
diff --git a/sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c b/sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c
new file mode 100644
index 0000000000..6534e9693b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c
@@ -0,0 +1,22 @@
+/* Elided version of pthread_mutex_trylock.
+ Copyright (C) 2011-2014 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"