[$] Using drgn on production kernels

The drgn Python-based kerneldebugger was developed by Omar Sandoval for use in his job on the kernelteam at Meta. He now spends most of his time working on drgn, both indeveloping new features for the tool and in usingit to debug production problems at Meta, which gives him a view of bothends of that feedback loop. At the 2023 Linux Plumbers Conference (LPC), he led a session on drgn in the kernel debuggingmicroconference, where he wanted to brainstorm on how to add some newfeatures to the debugger and, in particular, how to allow them to work onproduction kernels.