<dec f='src/src/sys/sys/callback.h' l='39' type='void *'/>
<offset>192</offset>
<use f='src/src/sys/kern/subr_callback.c' l='68' u='w' c='callback_register'/>
<use f='src/src/sys/kern/subr_callback.c' l='105' u='r' c='callback_runone'/>
