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-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 42b1c105a2..d4f2487538 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -517,3 +517,10 @@
 	|| defined __ia64__ || defined __sparc__ || __s390__)
 # define __ASSUME_ACCEPT4	1
 #endif
+
+/* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29.  */
+#if __LINUX_KERNEL_VERSION >= 0x02061d \
+    && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \
+	|| defined __ia64__ || defined __sparc__ || __s390__)
+# define __ASSUME_FUTEX_CLOCK_REALTIME	1
+#endif