Quoting Tvrtko Ursulin (2018-02-21 09:24:46) > As I said, it would be easy to support opening our PMU regardless on > which CPU it currently lives on by wrapping the "try the next cpu" logic > in the perf open wrappers. In kernel perf tool for instance does that > already. > > I could also change i915 to always try to move to CPU0 if it is > available, on any online events. But I am not sure that's in the spirit > of things. Ok, I got lost at why i915 perf requires a specific CPU, it is just that is part of the perf ABI, right? > I think making IGT perf open wrapper more robust makes most sense. Yeah, if it's part of the ABI we shouldn't just expect CPU0. Then throwing a test of the robust perf open in the midst of online/offline seems sensible. I guess we will will end up with a perf open before and after each stage, and keep the pmu fd around until the end. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
