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-rw-r--r--ChangeLog87
-rw-r--r--sysdeps/unix/sysv/linux/aarch64/kernel-features.h31
-rw-r--r--sysdeps/unix/sysv/linux/alpha/kernel-features.h7
-rw-r--r--sysdeps/unix/sysv/linux/arm/kernel-features.h9
-rw-r--r--sysdeps/unix/sysv/linux/hppa/kernel-features.h7
-rw-r--r--sysdeps/unix/sysv/linux/i386/kernel-features.h11
-rw-r--r--sysdeps/unix/sysv/linux/ia64/kernel-features.h13
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h26
-rw-r--r--sysdeps/unix/sysv/linux/m68k/kernel-features.h9
-rw-r--r--sysdeps/unix/sysv/linux/microblaze/kernel-features.h12
-rw-r--r--sysdeps/unix/sysv/linux/mips/kernel-features.h9
-rw-r--r--sysdeps/unix/sysv/linux/nios2/kernel-features.h31
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/kernel-features.h7
-rw-r--r--sysdeps/unix/sysv/linux/s390/kernel-features.h9
-rw-r--r--sysdeps/unix/sysv/linux/sh/kernel-features.h7
-rw-r--r--sysdeps/unix/sysv/linux/sparc/kernel-features.h3
-rw-r--r--sysdeps/unix/sysv/linux/tile/kernel-features.h7
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/kernel-features.h13
18 files changed, 124 insertions, 174 deletions
diff --git a/ChangeLog b/ChangeLog
index a38c643f41..251a8dd87a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,90 @@
+2016-03-15  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Define unconditionally.
+	(__ASSUME_ACCEPT4): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
+	Define.
+	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG):
+	Likewise.
+	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h: Remove file.
+	* sysdeps/unix/sysv/linux/nios2/kernel-features.h: Likewise.
+	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
+	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/arm/kernel-features.h
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/i386/kernel-features.h
+	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
+	Likewise.
+	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
+	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
+	0x040300].
+	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
+	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
+	0x030300] instead of defining if [__LINUX_KERNEL_VERSION >=
+	0x030300].
+	[__LINUX_KERNEL_VERSION < 0x030300] (__ASSUME_ACCEPT4): Undefine.
+	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
+	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
+	0x040300].
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
+	0x030300] instead of defining if [__LINUX_KERNEL_VERSION >=
+	0x030300].
+	* sysdeps/unix/sysv/linux/mips/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/s390/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
+	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
+	0x040300].
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/sh/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/tile/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/kernel-features.h
+	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
+	Likewise.
+
 2016-03-15  Andreas Schwab  <schwab@suse.de>
 
 	[BZ #19257]
diff --git a/sysdeps/unix/sysv/linux/aarch64/kernel-features.h b/sysdeps/unix/sysv/linux/aarch64/kernel-features.h
deleted file mode 100644
index 556ba733aa..0000000000
--- a/sysdeps/unix/sysv/linux/aarch64/kernel-features.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Set flags signalling availability of kernel features based on given
-   kernel version number.
-
-   Copyright (C) 2009-2016 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 <linux/version.h>
-
-/* AArch64 support starts with 3.7.0, guaranteeing many kernel
-   features.  */
-
-#define __ASSUME_ACCEPT4_SYSCALL        1
-#define __ASSUME_RECVMMSG_SYSCALL       1
-#define __ASSUME_SENDMMSG_SYSCALL       1
-
-#include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/alpha/kernel-features.h b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
index d7a29db461..732749e845 100644
--- a/sysdeps/unix/sysv/linux/alpha/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
@@ -20,13 +20,6 @@
 #ifndef _KERNEL_FEATURES_H
 #define _KERNEL_FEATURES_H 1
 
-/* Support for recvmmsg was added for alpha in 2.6.33.  */
-#define __ASSUME_RECVMMSG_SYSCALL       1
-
-/* Support for accept4 and sendmmsg was added for alpha in 3.2.  */
-#define __ASSUME_ACCEPT4_SYSCALL      1
-#define __ASSUME_SENDMMSG_SYSCALL     1
-
 #include_next <kernel-features.h>
 
 #undef __ASSUME_ST_INO_64_BIT
diff --git a/sysdeps/unix/sysv/linux/arm/kernel-features.h b/sysdeps/unix/sysv/linux/arm/kernel-features.h
index a97d4e23df..c04c4e2a02 100644
--- a/sysdeps/unix/sysv/linux/arm/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/arm/kernel-features.h
@@ -17,15 +17,6 @@
    License along with the GNU C Library.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
-/* Support for the recvmmsg syscall was added in 2.6.33.  */
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
-/* Support for the accept4 syscall was added in 2.6.36.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-
-/* Support for the sendmmsg syscall was added in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
-
 #include_next <kernel-features.h>
 
 /* The ARM kernel before 3.14.3 may or may not support
diff --git a/sysdeps/unix/sysv/linux/hppa/kernel-features.h b/sysdeps/unix/sysv/linux/hppa/kernel-features.h
index d0b489371e..f861027311 100644
--- a/sysdeps/unix/sysv/linux/hppa/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/hppa/kernel-features.h
@@ -18,13 +18,6 @@
    <http://www.gnu.org/licenses/>.  */
 
 
-/* Support for the accept4 and recvmmsg syscalls was added in 2.6.34.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
-/* Support for the sendmmsg syscall was added in 3.1.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
-
 /* Support for the utimes syscall was added in 3.14.  */
 #if __LINUX_KERNEL_VERSION >= 0x030e00
 # define __ASSUME_UTIMES		1
diff --git a/sysdeps/unix/sysv/linux/i386/kernel-features.h b/sysdeps/unix/sysv/linux/i386/kernel-features.h
index 4f5e0a4cc9..45054f85b1 100644
--- a/sysdeps/unix/sysv/linux/i386/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/i386/kernel-features.h
@@ -21,15 +21,9 @@
 #define __ASSUME_SOCKETCALL		1
 
 /* The recvmmsg syscall was added for i386 in 2.6.33.  */
-#if __LINUX_KERNEL_VERSION >= 0x020621
-# define __ASSUME_RECVMMSG_SYSCALL	1
-#endif
 #define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL	1
 
 /* The sendmmsg syscall was added for i386 in 3.0.  */
-#if __LINUX_KERNEL_VERSION >= 0x030000
-# define __ASSUME_SENDMMSG_SYSCALL	1
-#endif
 #define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
 
 /* Direct socketcalls available with kernel 4.3.  */
@@ -39,7 +33,6 @@
 # define __ASSUME_BIND_SYSCALL               1
 # define __ASSUME_CONNECT_SYSCALL            1
 # define __ASSUME_LISTEN_SYSCALL             1
-# define __ASSUME_ACCEPT4_SYSCALL            1
 # define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
 # define __ASSUME_GETSOCKOPT_SYSCALL         1
 # define __ASSUME_SETSOCKOPT_SYSCALL         1
@@ -55,3 +48,7 @@
 #endif
 
 #include_next <kernel-features.h>
+
+#if __LINUX_KERNEL_VERSION < 0x040300
+# undef __ASSUME_ACCEPT4_SYSCALL
+#endif
diff --git a/sysdeps/unix/sysv/linux/ia64/kernel-features.h b/sysdeps/unix/sysv/linux/ia64/kernel-features.h
index b238322418..c0c936b95b 100644
--- a/sysdeps/unix/sysv/linux/ia64/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/ia64/kernel-features.h
@@ -20,17 +20,12 @@
 #ifndef _KERNEL_FEATURES_H
 #define _KERNEL_FEATURES_H 1
 
-/* Support for the recvmmsg syscall was added in 2.6.33.  */
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
-/* Support for the sendmmsg syscall was added in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
+#include_next <kernel-features.h>
 
 /* Support for the accept4 syscall was added in 3.3.  */
-#if __LINUX_KERNEL_VERSION >= 0x030300
-# define __ASSUME_ACCEPT4_SYSCALL	1
+#if __LINUX_KERNEL_VERSION < 0x030300
+# undef __ASSUME_ACCEPT4_SYSCALL
+# undef __ASSUME_ACCEPT4
 #endif
 
-#include_next <kernel-features.h>
-
 #endif /* _KERNEL_FEATURES_H */
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 9832f41167..4411503cb2 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -106,10 +106,8 @@
 #ifdef __ASSUME_SOCKETCALL
 # define __ASSUME_ACCEPT4_SOCKETCALL	1
 #endif
-
-#if defined __ASSUME_ACCEPT4_SOCKETCALL || defined __ASSUME_ACCEPT4_SYSCALL
-# define __ASSUME_ACCEPT4	1
-#endif
+#define __ASSUME_ACCEPT4_SYSCALL	1
+#define __ASSUME_ACCEPT4	1
 
 /* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29.  */
 #define __ASSUME_FUTEX_CLOCK_REALTIME	1
@@ -125,11 +123,11 @@
 
 /* Support for recvmmsg functionality was added in 2.6.33.  The macros
    defined correspond to those for accept4.  */
-#if __LINUX_KERNEL_VERSION >= 0x020621 && defined __ASSUME_SOCKETCALL
-# define __ASSUME_RECVMMSG_SOCKETCALL	1
-#endif
-
-#if defined __ASSUME_RECVMMSG_SOCKETCALL || defined __ASSUME_RECVMMSG_SYSCALL
+#if __LINUX_KERNEL_VERSION >= 0x020621
+# ifdef __ASSUME_SOCKETCALL
+#  define __ASSUME_RECVMMSG_SOCKETCALL	1
+# endif
+# define __ASSUME_RECVMMSG_SYSCALL	1
 # define __ASSUME_RECVMMSG	1
 #endif
 
@@ -151,10 +149,10 @@
 
 /* Support for sendmmsg functionality was added in 3.0.  The macros
    defined correspond to those for accept4 and recvmmsg.  */
-#if __LINUX_KERNEL_VERSION >= 0x030000 && defined __ASSUME_SOCKETCALL
-# define __ASSUME_SENDMMSG_SOCKETCALL	1
-#endif
-
-#if defined __ASSUME_SENDMMSG_SOCKETCALL || defined __ASSUME_SENDMMSG_SYSCALL
+#if __LINUX_KERNEL_VERSION >= 0x030000
+# ifdef __ASSUME_SOCKETCALL
+#  define __ASSUME_SENDMMSG_SOCKETCALL	1
+# endif
+# define __ASSUME_SENDMMSG_SYSCALL	1
 # define __ASSUME_SENDMMSG	1
 #endif
diff --git a/sysdeps/unix/sysv/linux/m68k/kernel-features.h b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
index 7bce07e204..646bc4b680 100644
--- a/sysdeps/unix/sysv/linux/m68k/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
@@ -22,14 +22,11 @@
 
 /* Direct socketcalls available with kernel 4.3.  */
 #if __LINUX_KERNEL_VERSION >= 0x040300
-# define __ASSUME_RECVMMSG_SYSCALL           1
-# define __ASSUME_SENDMMSG_SYSCALL           1
 # define __ASSUME_SOCKET_SYSCALL             1
 # define __ASSUME_SOCKETPAIR_SYSCALL         1
 # define __ASSUME_BIND_SYSCALL               1
 # define __ASSUME_CONNECT_SYSCALL            1
 # define __ASSUME_LISTEN_SYSCALL             1
-# define __ASSUME_ACCEPT4_SYSCALL            1
 # define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
 # define __ASSUME_GETSOCKOPT_SYSCALL         1
 # define __ASSUME_SETSOCKOPT_SYSCALL         1
@@ -46,6 +43,12 @@
 
 #include_next <kernel-features.h>
 
+#if __LINUX_KERNEL_VERSION < 0x040300
+# undef __ASSUME_ACCEPT4_SYSCALL
+# undef __ASSUME_RECVMMSG_SYSCALL
+# undef __ASSUME_SENDMMSG_SYSCALL
+#endif
+
 /* No support for PI futexes or robust mutexes before 3.10 for m68k.  */
 #if __LINUX_KERNEL_VERSION < 0x030a00
 # undef __ASSUME_FUTEX_LOCK_PI
diff --git a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
index 8757b5aa87..3938989f88 100644
--- a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
@@ -39,15 +39,8 @@
 #define __ASSUME_RECVMSG_SYSCALL	1
 
 /* Support for the accept4 and recvmmsg syscalls was added in 2.6.33.  */
-#define __ASSUME_ACCEPT4_SYSCALL        1
-#define __ASSUME_RECVMMSG_SYSCALL       1
 #define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL      1
 
-/* Support for the sendmmsg syscall was added in 3.3.  */
-#if __LINUX_KERNEL_VERSION >= 0x030300
-# define __ASSUME_SENDMMSG_SYSCALL       1
-#endif
-
 /* Support for the futimesat syscall was added in 2.6.33.  */
 #define __ASSUME_FUTIMESAT              1
 
@@ -60,3 +53,8 @@
 # undef __ASSUME_PREADV
 # undef __ASSUME_PWRITEV
 #endif
+
+/* Support for the sendmmsg syscall was added in 3.3.  */
+#if __LINUX_KERNEL_VERSION < 0x030300
+# undef __ASSUME_SENDMMSG_SYSCALL
+#endif
diff --git a/sysdeps/unix/sysv/linux/mips/kernel-features.h b/sysdeps/unix/sysv/linux/mips/kernel-features.h
index 702c357317..7f8c98a4da 100644
--- a/sysdeps/unix/sysv/linux/mips/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/mips/kernel-features.h
@@ -19,15 +19,6 @@
 
 #include <sgidefs.h>
 
-/* Support for the accept4 syscall was added in 2.6.31.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-
-/* Support for the recvmmsg syscall was added in 2.6.33.  */
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
-/* Support for the sendmmsg syscall was added in 3.1.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
-
 #include_next <kernel-features.h>
 
 /* The MIPS kernel does not support futex_atomic_cmpxchg_inatomic if
diff --git a/sysdeps/unix/sysv/linux/nios2/kernel-features.h b/sysdeps/unix/sysv/linux/nios2/kernel-features.h
deleted file mode 100644
index c90df5da2a..0000000000
--- a/sysdeps/unix/sysv/linux/nios2/kernel-features.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Set flags signalling availability of kernel features based on given
-   kernel version number.
-
-   Copyright (C) 2009-2016 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 <linux/version.h>
-
-/* The minimum supported kernel version for Nios II is 3.19.0,
-   guaranteeing many kernel features.  */
-
-#define __ASSUME_ACCEPT4_SYSCALL        1
-#define __ASSUME_RECVMMSG_SYSCALL       1
-#define __ASSUME_SENDMMSG_SYSCALL       1
-
-#include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
index fa3e7ef111..171c030b03 100644
--- a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
@@ -20,12 +20,6 @@
 /* PowerPC uses socketcall.  */
 #define __ASSUME_SOCKETCALL		1
 
-/* The accept4 syscall was added for PowerPC in 2.6.37.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-
-/* The recvmmsg syscall was added for PowerPC in 2.6.37.  */
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
 /* New syscalls added for PowerPC in 2.6.37.  */
 #define __ASSUME_SOCKET_SYSCALL	1
 #define __ASSUME_BIND_SYSCALL		1
@@ -46,7 +40,6 @@
 #define __ASSUME_RECVMSG_SYSCALL	1
 
 /* The sendmmsg syscall was added for PowerPC in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
 #define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
 
 #include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/s390/kernel-features.h b/sysdeps/unix/sysv/linux/s390/kernel-features.h
index b810542489..a6f131be06 100644
--- a/sysdeps/unix/sysv/linux/s390/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/s390/kernel-features.h
@@ -22,14 +22,11 @@
 
 /* Direct socketcalls available with kernel 4.3.  */
 #if __LINUX_KERNEL_VERSION >= 0x040300
-# define __ASSUME_RECVMMSG_SYSCALL           1
-# define __ASSUME_SENDMMSG_SYSCALL           1
 # define __ASSUME_SOCKET_SYSCALL             1
 # define __ASSUME_SOCKETPAIR_SYSCALL         1
 # define __ASSUME_BIND_SYSCALL               1
 # define __ASSUME_CONNECT_SYSCALL            1
 # define __ASSUME_LISTEN_SYSCALL             1
-# define __ASSUME_ACCEPT4_SYSCALL            1
 # define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
 # define __ASSUME_GETSOCKOPT_SYSCALL         1
 # define __ASSUME_SETSOCKOPT_SYSCALL         1
@@ -45,3 +42,9 @@
 #endif
 
 #include_next <kernel-features.h>
+
+#if __LINUX_KERNEL_VERSION < 0x040300
+# undef __ASSUME_ACCEPT4_SYSCALL
+# undef __ASSUME_RECVMMSG_SYSCALL
+# undef __ASSUME_SENDMMSG_SYSCALL
+#endif
diff --git a/sysdeps/unix/sysv/linux/sh/kernel-features.h b/sysdeps/unix/sysv/linux/sh/kernel-features.h
index f9bc6f2324..9b4d1c2b2c 100644
--- a/sysdeps/unix/sysv/linux/sh/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sh/kernel-features.h
@@ -39,14 +39,7 @@
 #define __ASSUME_SENDMSG_SYSCALL	1
 #define __ASSUME_RECVMSG_SYSCALL	1
 
-/* The accept4 syscall was added for SH in 2.6.37.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-
-/* The recvmmsg syscall was added for SH in 2.6.37.  */
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
 /* The sendmmsg syscall was added for SH in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
 #define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
 
 #include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index 3a7baa7f08..386f2304d1 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -21,15 +21,12 @@
 #define __ASSUME_SOCKETCALL		1
 
 /* The accept4 syscall was added for SPARC in 2.6.28.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
 #define __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL	1
 
 /* The recvmmsg syscall was added for SPARC in 2.6.33.  */
-#define __ASSUME_RECVMMSG_SYSCALL	1
 #define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL	1
 
 /* The sendmmsg syscall was added for SPARC in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
 #define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
 
 #include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/tile/kernel-features.h b/sysdeps/unix/sysv/linux/tile/kernel-features.h
index 4c48c67ae0..7511f7770a 100644
--- a/sysdeps/unix/sysv/linux/tile/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/tile/kernel-features.h
@@ -17,13 +17,6 @@
    <http://www.gnu.org/licenses/>.  */
 
 
-/* TILE glibc support starts with 2.6.36, guaranteeing many kernel features. */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-#define __ASSUME_RECVMMSG_SYSCALL	1
-
-/* Support for the sendmmsg syscall was added in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL	1
-
 #include_next <kernel-features.h>
 
 /* Define this if your 32-bit syscall API requires 64-bit register
diff --git a/sysdeps/unix/sysv/linux/x86_64/kernel-features.h b/sysdeps/unix/sysv/linux/x86_64/kernel-features.h
index 0b84f113af..9491c3e831 100644
--- a/sysdeps/unix/sysv/linux/x86_64/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/x86_64/kernel-features.h
@@ -17,19 +17,6 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-/* The accept4 syscall was added for x86-64 in 2.6.28.  */
-#define __ASSUME_ACCEPT4_SYSCALL	1
-
-/* The recvmmsg syscall was added for x86-64 in 2.6.33.  */
-#if __LINUX_KERNEL_VERSION >= 0x020621
-# define __ASSUME_RECVMMSG_SYSCALL	1
-#endif
-
-/* The sendmmsg syscall was added for x86-64 in 3.0.  */
-#if __LINUX_KERNEL_VERSION >= 0x030000
-# define __ASSUME_SENDMMSG_SYSCALL	1
-#endif
-
 /* getcpu is a syscall for x86-64 since 3.1.  */
 #if __LINUX_KERNEL_VERSION >= 0x030100
 # define __ASSUME_GETCPU_SYSCALL	1