I've been looking through the socket protocol for UST and am a bit
curious about the construction of it. Is there a reason we haven't just
defined a ustctl package type with a command field, a result field and a
data field?
This would reduce the amount of scanning required by quite a bit.
I have not looked closely at the protocol. Reusing an existing protocol
would make sense. For instance, reusing the GDB protocol could be
interesting since GDB is already capable of listing and activating UST
tracepoints. Moreover, the GDB protocol is also used by kgdb to enable
kernel dynamic tracepoints with kprobes with a recent patch. I doubt
that the GDB protocol would be optimized for fast transfers of tracing
data, but that may be transmitted through a separate channel.
The TCF protocol could be another candidate.
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