Carp::Clan (3pm)     - Report errors from perspective of caller of a "clan" o...
Devel::Caller (3pm)  - meatier versions of "caller"
getunwind (2)        - copy the unwind data to caller's buffer
git-remote-fd (1)    - Reflect smart transport stream back to caller
printk_timed_ratelimit (9) - caller-controlled printk ratelimiting
raise (3)            - send a signal to the caller
svc_getcaller (3)    - library routines for remote procedure calls