diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 11407b9..b5a3bbe 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -262,3 +262,5 @@
 # ARM-specific ARM_NR_BASE == 0x0f0000 == 983040
 int     __set_tls:ARM_set_tls(void*)                                 983045,-1
 int     cacheflush:ARM_cacheflush(long start, long end, long flags)  983042,-1
+
+int     eventfd(int count, int flags) 351,323
diff --git a/libc/arch-arm/syscalls.mk b/libc/arch-arm/syscalls.mk
index 9cdd28a..9bfe70a 100644
--- a/libc/arch-arm/syscalls.mk
+++ b/libc/arch-arm/syscalls.mk
@@ -171,3 +171,4 @@
 syscall_src += arch-arm/syscalls/poll.S
 syscall_src += arch-arm/syscalls/__set_tls.S
 syscall_src += arch-arm/syscalls/cacheflush.S
+syscall_src += arch-arm/syscalls/eventfd.S
diff --git a/libc/arch-arm/syscalls/eventfd.S b/libc/arch-arm/syscalls/eventfd.S
new file mode 100644
index 0000000..fb0912f
--- /dev/null
+++ b/libc/arch-arm/syscalls/eventfd.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type eventfd, #function
+    .globl eventfd
+    .align 4
+    .fnstart
+
+eventfd:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_eventfd
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend
diff --git a/libc/include/sys/eventfd.h b/libc/include/sys/eventfd.h
new file mode 100644
index 0000000..0e142fd
--- /dev/null
+++ b/libc/include/sys/eventfd.h
@@ -0,0 +1,14 @@
+#ifndef _SYS_EVENTFD_H_
+#define _SYS_EVENTFD_H_
+
+#include <sys/cdefs.h>
+#include <asm/unistd.h>
+#include <asm/termbits.h>
+
+__BEGIN_DECLS
+
+extern int eventfd(int count, int flags);
+
+__END_DECLS
+
+#endif /*  _SYS_EVENTFD_H_ */
diff --git a/libc/include/sys/linux-syscalls.h b/libc/include/sys/linux-syscalls.h
index 6e373e0..9fefd86 100644
--- a/libc/include/sys/linux-syscalls.h
+++ b/libc/include/sys/linux-syscalls.h
@@ -181,6 +181,7 @@
 #define __NR_inotify_rm_watch             (__NR_SYSCALL_BASE + 318)
 #define __NR_ARM_set_tls                  (__NR_SYSCALL_BASE + 983045)
 #define __NR_ARM_cacheflush               (__NR_SYSCALL_BASE + 983042)
+#define __NR_eventfd                      (__NR_SYSCALL_BASE + 351)
 #endif
 
 #ifdef __i386__
@@ -222,6 +223,7 @@
 #define __NR_inotify_init                 (__NR_SYSCALL_BASE + 291)
 #define __NR_inotify_add_watch            (__NR_SYSCALL_BASE + 292)
 #define __NR_inotify_rm_watch             (__NR_SYSCALL_BASE + 293)
+#define __NR_eventfd                      (__NR_SYSCALL_BASE + 323)
 #endif
 
 #if defined(__SH3__) || defined(__SH4__) 
@@ -279,6 +281,7 @@
 #define __NR_inotify_init                 (__NR_SYSCALL_BASE + 290)
 #define __NR_inotify_add_watch            (__NR_SYSCALL_BASE + 291)
 #define __NR_inotify_rm_watch             (__NR_SYSCALL_BASE + 292)
+#define __NR_eventfd                      (__NR_SYSCALL_BASE + 323)
 #endif
 
 #endif
diff --git a/libc/include/sys/linux-unistd.h b/libc/include/sys/linux-unistd.h
index b0e7822..de5c2bb 100644
--- a/libc/include/sys/linux-unistd.h
+++ b/libc/include/sys/linux-unistd.h
@@ -202,6 +202,7 @@
 int              poll (struct pollfd *, unsigned int, long);
 int              __set_tls (void*);
 int              cacheflush (long start, long end, long flags);
+int              eventfd (int count, int flags);
 #ifdef __cplusplus
 }
 #endif