1cc72b2aef
Add the gfx-pps backbone in `src/pps`. v2: Simplify supported drivers creation. v3: No default getter is provided for counters. v4: Open DRM device in read/write mode. v5: Wait for datasource to be started. v6: Set FIFO scheduler while sampling counters. Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com> Acked-by: Emma Anholt <emma@anholt.net> Reviewed-by: Rob Clark <robdclark@chromium.org> Reviewed-by: John Bates <jbates@chromium.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9652>
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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* Copyright © 2019-2021 Collabora, Ltd.
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* Author: Antonio Caggiano <antonio.caggiano@collabora.com>
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* Author: Robert Beckett <bob.beckett@collabora.com>
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* Author: Corentin Noël <corentin.noel@collabora.com>
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include "pps.h"
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#include "pps_driver.h"
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namespace pps
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{
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struct GpuIncrementalState {
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bool was_cleared = true;
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};
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struct GpuDataSourceTraits : public perfetto::DefaultDataSourceTraits {
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using IncrementalStateType = GpuIncrementalState;
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};
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class Driver;
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/// @brief This datasource samples performance counters at a specified rate.
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/// Once the data is available, it sends a protobuf packet to the perfetto service.
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/// At the very beginning, it sends a description of the counters.
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/// After that, it sends counter values using the IDs set in the description.
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class GpuDataSource : public perfetto::DataSource<GpuDataSource, GpuDataSourceTraits>
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{
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public:
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void OnSetup(const SetupArgs &args) override;
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void OnStart(const StartArgs &args) override;
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void OnStop(const StopArgs &args) override;
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/// Blocks until the data source starts
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static void wait_started();
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/// @brief Perfetto trace callback
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static void trace_callback(TraceContext ctx);
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static void register_data_source(const std::string &driver_name);
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void trace(TraceContext &ctx);
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private:
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State state = State::Stop;
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/// Time between trace callbacks
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std::chrono::nanoseconds time_to_sleep = std::chrono::nanoseconds(1000000);
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/// Used to check whether the datasource is quick enough
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std::chrono::nanoseconds time_to_trace;
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/// A data source supports one driver at a time, but if you need more
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/// than one gpu datasource you can just run another producer
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Driver *driver = nullptr;
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/// Timestamp of packet sent with counter descriptors
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uint64_t descriptor_timestamp = 0;
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};
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} // namespace pps
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