[Bug tapsets/21888] New: bpf variants of log()/etc. functions

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21888

            Bug ID: 21888
           Summary: bpf variants of log()/etc. functions
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
          Assignee: systemtap at sourceware dot org
          Reporter: fche at redhat dot com
  Target Milestone: ---

If runtime=bpf, then log() etc. should relay to { printf(...) } rather than %{
embedded-c %} that won't work under bpf.

Generally review tapset *.stp files to see how many of them can grow a bpf
variant easily.  The list of lower level "bpf helper" functions is very small
(kernel tools/include/uapi/linux/bpf.h), so we may need to approximate or stub
out, or let the current error message stay for them.

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