On 16 October 2015 at 14:30, Paolo Bonzini <pbonz...@redhat.com> wrote: > > > On 16/10/2015 15:29, Peter Maydell wrote: >>> > You can use globs in tracepoint names you want to enable. So if the >>> > tracepoints have structured / well considerd name prefixes, you can >>> > enable classses at once. >> ...but in practice we don't really do that very much, and we >> don't have documented lists of classes which we support either. >> Guessing what might be a plausible glob of tracepoint names to >> enable seems like a definite step back from the formalized >> logging categories we have currently. > > We could add "-d trace:help" to list valid tracepoint names.
I think people are mostly going to care about categories (eg "enable tracing for device X", or "enable tracing for all unimplemented features", or "enable a medium level of debug tracing for device Y". If we want to get there we need to define standards for naming tracepoints and enforce them somehow (subsystem_category_level_tracepointname ?) thanks -- PMM
