1 files changed, 40 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 322b1f8c21b3..4e009fde4b69 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -475,13 +475,53 @@ config FUTEX
           support for "fast userspace mutexes".  The resulting kernel may not
           run glibc-based applications correctly.
 
+config ANON_INODES
+        bool "Enable anonymous inode source" if EMBEDDED
+        default y
+        help
+          Anonymous inode source for pseudo-files like epoll, signalfd,
+          timerfd and eventfd.
+
+          If unsure, say Y.
+
 config EPOLL
         bool "Enable eventpoll support" if EMBEDDED
         default y
+        depends on ANON_INODES
         help
           Disabling this option will cause the kernel to be built without
           support for epoll family of system calls.
 
+config SIGNALFD
+        bool "Enable signalfd() system call" if EMBEDDED
+        depends on ANON_INODES
+        default y
+        help
+          Enable the signalfd() system call that allows to receive signals
+          on a file descriptor.
+
+          If unsure, say Y.
+
+config TIMERFD
+        bool "Enable timerfd() system call" if EMBEDDED
+        depends on ANON_INODES
+        default y
+        help
+          Enable the timerfd() system call that allows to receive timer
+          events on a file descriptor.
+
+          If unsure, say Y.
+
+config EVENTFD
+        bool "Enable eventfd() system call" if EMBEDDED
+        depends on ANON_INODES
+        default y
+        help
+          Enable the eventfd() system call that allows to receive both
+          kernel notification (ie. KAIO) or userspace notifications.
+
+          If unsure, say Y.
+
 config SHMEM
         bool "Use full shmem filesystem" if EMBEDDED
         default y