Add eventfd system call support
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