* Non-atomic decrement. Only used by reader, apply to reader-owned subbuffer.
*/
static inline
-void _v_dec(const struct lttng_ust_lib_ring_buffer_config *config, union v_atomic *v_a)
+void _v_dec(const struct lttng_ust_lib_ring_buffer_config *config __attribute__((unused)), union v_atomic *v_a)
{
--v_a->v;
}