Add Event Recorder Profiling

* Add event recorded profiling to ethosu_profiler.
* Rename ethosu_profiler to layer_by_layer_profiler.

Change-Id: Ie39c29845b2d1eb6d9d72e3fce68bf373e9dc888

3 files changed, 0 insertions, 187 deletions

diff --git a/lib/ethosu_profiler/CMakeLists.txt b/lib/ethosu_profiler/CMakeLists.txt
deleted file mode 100644
index 336a696..0000000
--- a/lib/ethosu_profiler/CMakeLists.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-#
-# Copyright (c) 2021 Arm Limited. All rights reserved.
-#
-# SPDX-License-Identifier: Apache-2.0
-#
-# Licensed under the Apache License, Version 2.0 (the License); you may
-# not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an AS IS BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-if (NOT TARGET ethosu_core_driver)
-    return()
-endif()
-add_library(ethosu_profiler INTERFACE)
-
-target_link_libraries(ethosu_profiler INTERFACE ethosu_core_driver tflu)
-target_include_directories(ethosu_profiler INTERFACE include)
-target_sources(ethosu_profiler INTERFACE src/ethosu_profiler.cpp)
diff --git a/lib/ethosu_profiler/include/ethosu_profiler.hpp b/lib/ethosu_profiler/include/ethosu_profiler.hpp
deleted file mode 100644
index 12c337c..0000000
--- a/lib/ethosu_profiler/include/ethosu_profiler.hpp
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2021 Arm Limited. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ETHOSU_PROFILER_H
-#define ETHOSU_PROFILER_H
-
-#include "tensorflow/lite/kernels/internal/compatibility.h"
-#include <memory>
-#include <pmu_ethosu.h>
-
-// NOTE: This profiler only works on systems with 1 NPU due to the use of
-// ethosu_reserve_driver().
-namespace tflite {
-class EthosUProfiler : public MicroProfiler {
-public:
-    EthosUProfiler(size_t max_events = 200);
-    uint32_t BeginEvent(const char *tag);
-    void EndEvent(uint32_t event_handle);
-    uint64_t GetTotalTicks() const;
-    void Log() const;
-
-private:
-    size_t max_events_;
-    std::unique_ptr<const char *[]> tags_;
-    std::unique_ptr<uint64_t[]> start_ticks_;
-    std::unique_ptr<uint64_t[]> end_ticks_;
-    size_t num_events_;
-
-    TF_LITE_REMOVE_VIRTUAL_DELETE;
-};
-
-} // namespace tflite
-
-#endif
diff --git a/lib/ethosu_profiler/src/ethosu_profiler.cpp b/lib/ethosu_profiler/src/ethosu_profiler.cpp
deleted file mode 100644
index 50b65f0..0000000
--- a/lib/ethosu_profiler/src/ethosu_profiler.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (c) 2021 Arm Limited. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "tensorflow/lite/kernels/internal/compatibility.h"
-#include "tensorflow/lite/micro/micro_error_reporter.h"
-#include "tensorflow/lite/micro/micro_profiler.h"
-#include "tensorflow/lite/micro/micro_time.h"
-
-#include <string.h>
-
-#include "ethosu_profiler.hpp"
-#include <ethosu_driver.h>
-#include <inttypes.h>
-#include <stdio.h>
-
-namespace {
-
-uint64_t GetCurrentEthosuTicks(struct ethosu_driver *drv) {
-    return ETHOSU_PMU_Get_CCNTR(drv);
-}
-
-} // namespace
-
-namespace tflite {
-
-EthosUProfiler::EthosUProfiler(size_t max_events) : max_events_(max_events), num_events_(0) {
-    tags_        = std::make_unique<const char *[]>(max_events_);
-    start_ticks_ = std::make_unique<uint64_t[]>(max_events_);
-    end_ticks_   = std::make_unique<uint64_t[]>(max_events_);
-
-    struct ethosu_driver *drv = ethosu_reserve_driver();
-    ETHOSU_PMU_CNTR_Enable(drv, ETHOSU_PMU_CCNT_Msk);
-    ETHOSU_PMU_CYCCNT_Reset(drv);
-    ethosu_release_driver(drv);
-}
-
-// NOTE: THIS PROFILER ONLY WORKS ON SYSTEMS WITH 1 NPU
-uint32_t EthosUProfiler::BeginEvent(const char *tag) {
-    if (num_events_ == max_events_) {
-        tflite::GetMicroErrorReporter()->Report("Profiling event overflow, max: %u events", max_events_);
-        num_events_ = 0;
-    }
-
-    tags_[num_events_] = tag;
-
-    if (strcmp("ethos-u", tag) == 0) {
-        struct ethosu_driver *ethosu_drv = ethosu_reserve_driver();
-        ETHOSU_PMU_CYCCNT_Reset(ethosu_drv);
-        ETHOSU_PMU_PMCCNTR_CFG_Set_Start_Event(ethosu_drv, ETHOSU_PMU_NPU_ACTIVE);
-        ETHOSU_PMU_PMCCNTR_CFG_Set_Stop_Event(ethosu_drv, ETHOSU_PMU_NPU_IDLE);
-        start_ticks_[num_events_] = GetCurrentEthosuTicks(ethosu_drv);
-        ethosu_release_driver(ethosu_drv);
-    } else {
-        start_ticks_[num_events_] = GetCurrentTimeTicks();
-    }
-
-    end_ticks_[num_events_] = start_ticks_[num_events_] - 1;
-    return num_events_++;
-}
-
-// NOTE: THIS PROFILER ONLY WORKS ON SYSTEMS WITH 1 NPU
-void EthosUProfiler::EndEvent(uint32_t event_handle) {
-    TFLITE_DCHECK(event_handle < max_events_);
-
-    if (strcmp("ethos-u", tags_[event_handle]) == 0) {
-        struct ethosu_driver *ethosu_drv = ethosu_reserve_driver();
-        end_ticks_[event_handle]         = GetCurrentEthosuTicks(ethosu_drv);
-        ethosu_release_driver(ethosu_drv);
-    } else {
-        end_ticks_[event_handle] = GetCurrentTimeTicks();
-    }
-
-    printf("%s : cycle_cnt : %" PRIu64 " cycles\n",
-           tags_[event_handle],
-           end_ticks_[event_handle] - start_ticks_[event_handle]);
-}
-
-uint64_t EthosUProfiler::GetTotalTicks() const {
-    uint64_t ticks = 0;
-
-    for (size_t i = 0; i < num_events_; ++i) {
-        ticks += end_ticks_[i] - start_ticks_[i];
-    }
-
-    return ticks;
-}
-
-void EthosUProfiler::Log() const {
-#if !defined(TF_LITE_STRIP_ERROR_STRINGS)
-    for (int i = 0; i < num_events_; ++i) {
-        uint64_t ticks = end_ticks_[i] - start_ticks_[i];
-        printf("%s took %" PRIu64 " cycles\n", tags_[i], ticks);
-    }
-#endif
-}
-
-} // namespace tflite