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authorStefan Hajnoczi <stefanha@redhat.com>2014-06-22 21:46:05 +0800
committerStefan Hajnoczi <stefanha@redhat.com>2014-08-12 14:26:11 +0100
commit3f8b112d6b9ab65e165096582c78154dda1adc69 (patch)
tree052097276ce312b408517fe4ac7748f79b2db0a3 /sysconfigs
parenta76ccf3c1cb06576af091c5ac8bc264515b1bb7f (diff)
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hqemu-3f8b112d6b9ab65e165096582c78154dda1adc69.tar.gz
trace: add tracetool simpletrace_stap format
This new tracetool "format" generates a SystemTap .stp file that outputs simpletrace binary trace data. In contrast to simpletrace or ftrace, SystemTap does not define its own trace format. All output from SystemTap is generated by .stp files. This patch lets us generate a .stp file that outputs in the simpletrace binary format. This makes it possible to reuse simpletrace.py to analyze traces recorded using SystemTap. The simpletrace binary format is especially useful for long-running traces like flight-recorder mode where string formatting can be expensive. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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