HelenOS sources

sys_ipc_event_subscribe  102 kernel/generic/include/ipc/event.h extern sys_errno_t sys_ipc_event_subscribe(sysarg_t, sysarg_t);
sys_ipc_event_subscribe  105 kernel/generic/src/syscall/syscall.c 	[SYS_IPC_EVENT_SUBSCRIBE] = (syshandler_t) sys_ipc_event_subscribe,