Hi NormanI will try the tracing machanism to test the USB driver. Is there public the trace monitor version used to bring up the Rpi USB driver on base_hw?
Best regards On 05/04/2015 04:55 AM, Norman Feske wrote:
Hi Reinier,I've been testing the USB driver in the RaspberryPI assigning priorities to each processes, but continue losing events. I have also tried changing the top value of cnt, but still the same result. I will continue doing some independent tests of the driver, mouse, keyboard and network independently. If you have any other suggestions?admittedly, I am (almost) running out of ideas. The last resort would be to use Genode's tracing mechanism [1] to obtain a trace of interrupts as received by the USB driver along with information about the state of the USB driver. I would then compare the trace generated with base-hw against the trace generated with base-foc. Unfortunately, employing the tracing mechanism requires a bit of labor on your side. You will need to develop a so-called trace monitor that assigns a tracing policy to the threads of interest (the ones living in the USB driver) and captures the tracing data. You can find a simple example at os/run/trace.run. BTW, the tracing framework played an instrumental role for bringing the Rpi USB driver to Genode in the first place. Without it, I certainly would not have succeeded. [1] http://genode.org/documentation/release-notes/13.08#Light-weight_event_tracing Best regards Norman
-- Lic. Reinier Millo Sánchez Centro de Estudios de Informática Universidad Central "Marta Abreu" de Las Villas Carretera a Camajuaní Km 5 1/2 Santa Clara, Villa Clara, Cuba CP 54830 "antes de discutir ... respira; antes de hablar ... escucha; antes de escribir ... piensa; antes de herir ... siente; antes de rendirte ... intenta; antes de morir ... vive"
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