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[Bug tapsets/21888] New: bpf variants of log()/etc. functions
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Wed, 02 Aug 2017 18:14:45 +0000
- Subject: [Bug tapsets/21888] New: bpf variants of log()/etc. functions
- Auto-submitted: auto-generated
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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