Re: Convert an error_report to tracepoint

["Daniel P. Berrangé" <berrange@redhat.com>]

On Mon, Sep 30, 2024 at 01:36:21PM +0200, Anthony Harivel wrote:
> Hello, 
> 
> There is an error_report() in target/i386/kvm/vmsr_energy.c that would 
> benefit for being a tracepoint because this is not actually an "error" 
> as per se, but more a notification that could be used for debugging, and 
> it is quite verbose.
> 
> Could someone give me some pointer on how I could manage that so I can 
> send a patch to rectify this ?

Modify the file target/i386/kvm/trace-events   to define your desired
tracepoint(s).

Then #include "trace-event.h"  in your vmsr_energy.c  file

Call your probepoint using  trace_{probe name}(...args...)

See docs/devel/tracing.rst for general info on tracing

With regards,
Daniel
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