On 07/27/2011 03:55 PM, Stefan Hajnoczi wrote:
> > trace-cmd has a plugin API (and a kvm plugin) that you can use for > this, and I expect perf either does as well or can make use of one. > I don't think it's useful to complicate the print format description > further to support our weird use case. The problem with relying on a plugin is that every userspace application (currently two that I am aware of: perf and trace-cmd) has to add special-case kvm code to work around our crappy format.
Move the plugins to tools/trace-formats and install them in /lib/modules/$(uname -r)/tracepoint-formats/*.so.
With these patches we at least get back to an event format that is self-describing - no plugin necessary.
There will always be special cases. Look at how trace-cmd formats the kvm_emulate_insn event.
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