Messages in this thread | | | Date | Sat, 09 Apr 2011 21:50:29 -0600 | From | David Ahern <> | Subject | adding trace-cmd's plugins to perf |
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Right now perf script cannot process kvm tracepoints:
perf record -e kvm:* -p 6446 -- sleep 5
perf script Warning: Error: expected type 4 but read 7 Warning: Error: expected type 5 but read 0 Warning: failed to read event print fmt for kvm_apic Warning: Error: expected type 4 but read 7 Warning: Error: expected type 5 but read 0 Warning: failed to read event print fmt for kvm_inj_exception Fatal: bad op token {
trace-cmd can parse the events through the kvm plugin.
As I understand it trace-cmd and perf have a lot of similar code, so I would expect to be able to add the plugin capability to perf somewhat easily. However, that does not seem to be the right thing to do (copying yet more code between the two).
Before I invest a lot of time on this path I figured I should ask what the intentions (roadmap seems to be too formal a word ;-)) are about merging common code between the two commands. Also, trace-cmd and perf are in separate repositories so a shared lib is going to inconvenience one of the two.
Thanks, David
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