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2021-02-01trace: update docs with meson build informationStefan Hajnoczi
The documentation still refers to the makefile and the old sub-directory layout. Meson works differently: tracetool output is placed into the builddir with mangled filenames like <builddir>/trace/trace-accel_kvm.h for the accel/kvm/ trace.h definition. This meson setup also requires a manually-created accel/kvm/trace.h file that #includes the <builddir>/trace/trace-accel_kvm.h file. Document this! Reported-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20210112165859.225534-3-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-01trace: document how to specify multiple --trace patternsStefan Hajnoczi
It is possible to repeat the --trace option to specify multiple patterns. This may be preferrable to users who do not want to create a file with a list of patterns. Suggested-by: BALATON Zoltan <balaton@eik.bme.hu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20210112165859.225534-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-01trace: make the 'log' backend timestamp configurableStefan Hajnoczi
Timestamps in tracing output can be distracting. Make it possible to control tid/timestamp printing with -msg timestamp=on|off. The default is no tid/timestamps. Previously they were always printed. Suggested-by: BALATON Zoltan <balaton@eik.bme.hu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: BALATON Zoltan <balaton@eik.bme.hu> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20210125113507.224287-3-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-01trace: recommend "log" backend for getting started with tracingStefan Hajnoczi
The "simple" backend is actually more complicated to use than the "log" backend. Update the quickstart documentation to feature the "log" backend instead of the "simple" backend. Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20201216160923.722894-4-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-01tracing: convert documentation to rSTStefan Hajnoczi
This is a simple rST conversion of the documentation. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20201216160923.722894-3-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>