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[Bug runtime/7043] Support unified trace buffer
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 29 Jan 2009 22:55:09 -0000
- Subject: [Bug runtime/7043] Support unified trace buffer
- References: <20081121133106.7043.mhiramat@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From fche at redhat dot com 2009-01-29 22:55 -------
Let's assess whether the ring buffer widget, or the larger control
structures around it in ftrace, are relevant/useful to systemtap.
We need at least:
- access to the ftrace buffering stuff from modules
- the ring buffers need to contain formatted ascii, since that is what scripts
produce, and not rely on subsequent trace_iter printing like current ftrace
engines; maybe reuse ftrace_printk
- per-script trace files (instead of /debugfs/tracing/trace intermingled) ...
unless some goofy multiplexing is the only way
- probably no connection with the overall control switch
/tracing/tracing_enabled), since scripts come and go at any time
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|systemtap at sources dot |dsmith at redhat dot com
|redhat dot com |
Status|NEW |ASSIGNED
http://sourceware.org/bugzilla/show_bug.cgi?id=7043
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