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[Bug bpf/23475] New: bpf backtrace tapset


https://sourceware.org/bugzilla/show_bug.cgi?id=23475

            Bug ID: 23475
           Summary: bpf backtrace tapset
           Product: systemtap
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: bpf
          Assignee: systemtap at sourceware dot org
          Reporter: me at serhei dot io
  Target Milestone: ---

From the 'language features' brainstorm:

# Backtrace tapset

Backtraces can be recorded to eBPF's BPF_MAP_TYPE_STACK_TRACE. Backtrace
analysis+printing can be handled in userspace. This requires replacing the
trace_printk() functionality with a messaging protocol that offloads printing
to userspace (PR22330), then adding a new message type that requests a
backtrace to be printed.

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