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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 /nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c
parent65c89320e2968c55feddfbdacd09c0a6cc0b006c (diff)
downloadglibc-039890a67818211dba8207feab3832b0fcc391d2.tar.gz
Move remaining files out of nptl/sysdeps/unix/sysv/linux/x86/.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c81
1 files changed, 0 insertions, 81 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c b/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c
deleted file mode 100644
index e6f5d6d1ab..0000000000
--- a/nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/* 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
-};