|| ||Mathieu Desnoyers <email@example.com>|
|| ||firstname.lastname@example.org, Ingo Molnar <email@example.com>,
Peter Zijlstra <firstname.lastname@example.org>,
Masami Hiramatsu <email@example.com>|
|| ||[RFC patch 0/3] Tracepoints|
|| ||Thu, 03 Jul 2008 12:05:26 -0400|
Here is the new tracepoint infrastructure, heavily inspired from the Markers. It
applies on 2.6.26-rc8. I also post my fs/ LTTng instrumentation as an example
of the resulting code using tracepoints. Please feel free to comment.
- Tracepoints allow more complete type checking (at compile-time) than markers.
- They allow to connect probes involving in-kernel tracers which must be aware
of complex types such as "struct task_struct *" (not just a void *).
- They are not meant as a replacement for markers, since they do not allow
one-liner printk-style addition of tracing statements for debugging purpose.
- They require a declaration in a header file, which creates a nice stable API.
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
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