7c46a8eb2b
Change-Id: If2c626544f208e15c91be975dee9253126862ced Reviewed-on: https://gem5-review.googlesource.com/10222 Reviewed-by: Alexandru Duțu <alexandru.dutu@amd.com> Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>
84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
/*
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* Copyright (c) 2014-2017 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Sooraj Puthoor,
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* Anthony Gutierrez
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*/
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#ifndef __GPU_COMPUTE_OF_SCHEDULING_POLICY_HH__
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#define __GPU_COMPUTE_OF_SCHEDULING_POLICY_HH__
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#include <vector>
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#include "gpu-compute/scheduling_policy.hh"
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#include "gpu-compute/wavefront.hh"
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// oldest first where age is marked by the wave id
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class OFSchedulingPolicy final : public __SchedulingPolicy<OFSchedulingPolicy>
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{
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public:
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OFSchedulingPolicy()
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{
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}
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static Wavefront*
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__chooseWave(std::vector<Wavefront*> *sched_list)
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{
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panic_if(!sched_list->size(), "OF scheduling policy sched list is "
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"empty.\n");
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// set when policy choose a wave to schedule
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Wavefront *selected_wave(nullptr);
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int selected_wave_id = -1;
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int selected_position = 0;
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for (int position = 0; position < sched_list->size(); ++position) {
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Wavefront *cur_wave = sched_list->at(position);
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int cur_wave_id = cur_wave->wfDynId;
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// Choosed wave with the lowest wave ID
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if (selected_wave_id == -1 || cur_wave_id < selected_wave_id) {
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selected_wave_id = cur_wave_id;
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selected_wave = cur_wave;
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selected_position = position;
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}
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}
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// Check to make sure ready list had at least one schedulable wave
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panic_if(!selected_wave, "No wave found by OF scheduling policy.\n");
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sched_list->erase(sched_list->begin() + selected_position);
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return selected_wave;
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}
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};
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#endif // __GPU_COMPUTE_OF_SCHEDULING_POLICY_HH__
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