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Diffstat (limited to 'sysdeps/x86/nptl/bits/pthreadtypes-arch.h')
-rw-r--r--sysdeps/x86/nptl/bits/pthreadtypes-arch.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/x86/nptl/bits/pthreadtypes-arch.h b/sysdeps/x86/nptl/bits/pthreadtypes-arch.h
index fd86806800..74d5f6d6e8 100644
--- a/sysdeps/x86/nptl/bits/pthreadtypes-arch.h
+++ b/sysdeps/x86/nptl/bits/pthreadtypes-arch.h
@@ -51,6 +51,13 @@
 #define __PTHREAD_COMPAT_PADDING_MID
 #define __PTHREAD_COMPAT_PADDING_END
 #define __PTHREAD_MUTEX_LOCK_ELISION    1
+#ifdef __x86_64__
+# define __PTHREAD_MUTEX_NUSERS_AFTER_KIND  0
+# define __PTHREAD_MUTEX_USE_UNION          0
+#else
+# define __PTHREAD_MUTEX_NUSERS_AFTER_KIND  1
+# define __PTHREAD_MUTEX_USE_UNION          1
+#endif
 
 #define __LOCK_ALIGNMENT
 #define __ONCE_ALIGNMENT