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[Bug translator/14884] New: expose TRACE_SYSTEM for kernel.trace() probes
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Tue, 27 Nov 2012 20:27:28 +0000
- Subject: [Bug translator/14884] New: expose TRACE_SYSTEM for kernel.trace() probes
- Auto-submitted: auto-generated
http://sourceware.org/bugzilla/show_bug.cgi?id=14884
Bug #: 14884
Summary: expose TRACE_SYSTEM for kernel.trace() probes
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: translator
AssignedTo: systemtap@sourceware.org
ReportedBy: fche@redhat.com
Classification: Unclassified
In kernel tracepoint headers, #define TRACE_SYSTEM gives a baby namespace
prefix for the tracepoints defined therein. These are in turn used as FOO:
prefixes for "perf list | grep Tracepoint", and serve to group them. stap
ignores TRACE_SYSTEM, so only the basic tracepoint names are exposed.
We should suck out the marrow from the femurs life - or at least the
TRACE_SYSTEM from these headers. We should expose that string for probe
points, as kernel.trace("foo:bar") or perhaps
kernel.trace("bar").system("foo"), and as appropriate $$-variables.
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