Messages in this thread | | | Date | Mon, 10 Feb 2020 22:15:21 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH] Add gpu memory tracepoints |
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On Mon, 10 Feb 2020 19:05:35 -0800 Yiwei Zhang <zzyiwei@google.com> wrote:
> Thanks for the prompt reply! > > The tracepoint proposed here is for tracking global gpu memory usage > total counter and per-process gpu memory usage total counter. The > tracepoint is for gfx drivers who have implemented gpu memory tracking > system. The tracepoint expects the de-duplication of the shared memory > is done inside the tracking system. > > On Android, the graphics driver has implemented gpu memory tracking. > First, we'd like to profiler GPU memory with this tracepoint. Second, > we implement eBPF programs and attach to this tracepoint for tracking > GPU memory at runtime on production devices. However, the tracepoint + > eBPF approach requires the tracepoint to be upstreamed so that it's > considered a stable interface which Android common kernel can carry it > forever.
Then it needs to live in the drivers/gpu directory. kernel/trace is for tracing infrastructure and not for adding trace points.
-- Steve
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