diff --git a/arch/generic/bits/ioctl.h b/arch/generic/bits/ioctl.h
index c2035fc5..44deb11a 100644
--- a/arch/generic/bits/ioctl.h
+++ b/arch/generic/bits/ioctl.h
@@ -137,6 +137,7 @@ struct winsize {
 #define SIOCGPGRP       0x8904
 #define SIOCATMARK      0x8905
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/mips/bits/ioctl.h b/arch/mips/bits/ioctl.h
index 793c66ee..71394449 100644
--- a/arch/mips/bits/ioctl.h
+++ b/arch/mips/bits/ioctl.h
@@ -145,6 +145,7 @@ struct winsize {
 #define SIOCSPGRP       _IOW('s', 8, pid_t)
 #define SIOCGPGRP       _IOR('s', 9, pid_t)
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/mips64/bits/ioctl.h b/arch/mips64/bits/ioctl.h
index 793c66ee..71394449 100644
--- a/arch/mips64/bits/ioctl.h
+++ b/arch/mips64/bits/ioctl.h
@@ -145,6 +145,7 @@ struct winsize {
 #define SIOCSPGRP       _IOW('s', 8, pid_t)
 #define SIOCGPGRP       _IOR('s', 9, pid_t)
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/mipsn32/bits/ioctl.h b/arch/mipsn32/bits/ioctl.h
index 793c66ee..71394449 100644
--- a/arch/mipsn32/bits/ioctl.h
+++ b/arch/mipsn32/bits/ioctl.h
@@ -145,6 +145,7 @@ struct winsize {
 #define SIOCSPGRP       _IOW('s', 8, pid_t)
 #define SIOCGPGRP       _IOR('s', 9, pid_t)
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/powerpc/bits/ioctl.h b/arch/powerpc/bits/ioctl.h
index 6d49cf4e..d3771dd3 100644
--- a/arch/powerpc/bits/ioctl.h
+++ b/arch/powerpc/bits/ioctl.h
@@ -150,6 +150,7 @@ struct winsize {
 #define SIOCGPGRP       0x8904
 #define SIOCATMARK      0x8905
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/powerpc64/bits/ioctl.h b/arch/powerpc64/bits/ioctl.h
index 6d49cf4e..d3771dd3 100644
--- a/arch/powerpc64/bits/ioctl.h
+++ b/arch/powerpc64/bits/ioctl.h
@@ -150,6 +150,7 @@ struct winsize {
 #define SIOCGPGRP       0x8904
 #define SIOCATMARK      0x8905
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/s390x/bits/ioctl.h b/arch/s390x/bits/ioctl.h
index 11196e15..0ebac590 100644
--- a/arch/s390x/bits/ioctl.h
+++ b/arch/s390x/bits/ioctl.h
@@ -131,6 +131,7 @@ struct winsize {
 #define SIOCGPGRP       0x8904
 #define SIOCATMARK      0x8905
 #define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C
diff --git a/arch/sh/bits/ioctl.h b/arch/sh/bits/ioctl.h
index e6e7d344..15256c51 100644
--- a/arch/sh/bits/ioctl.h
+++ b/arch/sh/bits/ioctl.h
@@ -141,6 +141,7 @@ struct winsize {
 #define SIOCSPGRP       _IOW('s', 8, int)
 #define SIOCGPGRP       _IOW('s', 9, int)
 #define SIOCGSTAMP      _IOR('s', 100, char[8])
+#define SIOCGSTAMPNS    _IOR('s', 101, char[8])
 
 #define SIOCADDRT       0x890B
 #define SIOCDELRT       0x890C