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From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug tapsets/21888] New: bpf variants of log()/etc. functions
Date: Wed, 02 Aug 2017 18:14:00 -0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: new
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X-Bugzilla-Product: systemtap
X-Bugzilla-Component: tapsets
X-Bugzilla-Version: unspecified
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X-Bugzilla-Who: fche at redhat dot com
X-Bugzilla-Status: NEW
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D21888

            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=3Dbpf, then log() etc. should relay to { printf(...) } rather th=
an %{
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 sma=
ll
(kernel tools/include/uapi/linux/bpf.h), so we may need to approximate or s=
tub
out, or let the current error message stay for them.

--=20
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