diff --git a/libc/kernel/uapi/linux/counter.h b/libc/kernel/uapi/linux/counter.h
index f986365..e986601 100644
--- a/libc/kernel/uapi/linux/counter.h
+++ b/libc/kernel/uapi/linux/counter.h
@@ -71,6 +71,12 @@
   COUNTER_COUNT_MODE_RANGE_LIMIT,
   COUNTER_COUNT_MODE_NON_RECYCLE,
   COUNTER_COUNT_MODE_MODULO_N,
+  COUNTER_COUNT_MODE_INTERRUPT_ON_TERMINAL_COUNT,
+  COUNTER_COUNT_MODE_HARDWARE_RETRIGGERABLE_ONESHOT,
+  COUNTER_COUNT_MODE_RATE_GENERATOR,
+  COUNTER_COUNT_MODE_SQUARE_WAVE_MODE,
+  COUNTER_COUNT_MODE_SOFTWARE_TRIGGERED_STROBE,
+  COUNTER_COUNT_MODE_HARDWARE_TRIGGERED_STROBE,
 };
 enum counter_function {
   COUNTER_FUNCTION_INCREASE,