1/*
| 1/*
|
2 * Copyright (c) 2014-2015 Advanced Micro Devices, Inc.
| 2 * Copyright (c) 2014-2017 Advanced Micro Devices, Inc.
|
3 * All rights reserved.
4 *
5 * For use for simulation and test purposes only
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 *
| 3 * All rights reserved.
4 *
5 * For use for simulation and test purposes only
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 *
|
17 * 3. Neither the name of the copyright holder nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
| 17 * 3. Neither the name of the copyright holder nor the names of its
18 * contributors may be used to endorse or promote products derived from this
19 * software without specific prior written permission.
|
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
| 20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
|
33 * Author: Sooraj Puthoor
| 33 * Authors: Sooraj Puthoor,
34 * Anthony Gutierrez
|
34 */
35
| 35 */
36
|
36#ifndef __RR_SCHEDULING_POLICY_HH__
37#define __RR_SCHEDULING_POLICY_HH__
| 37#ifndef __GPU_COMPUTE_RR_SCHEDULING_POLICY_HH__
38#define __GPU_COMPUTE_RR_SCHEDULING_POLICY_HH__
|
38
| 39
|
39#include <inttypes.h>
40
41#include <cstddef>
42#include <utility>
| |
43#include <vector>
44
| 40#include <vector>
41
|
45#include "base/logging.hh"
| 42#include "gpu-compute/scheduling_policy.hh"
43#include "gpu-compute/wavefront.hh"
|
46
| 44
|
47class Wavefront;
48
49// Round-Robin pick among the list of ready waves
50class RRSchedulingPolicy
| 45// round-robin pick among the list of ready waves
46class RRSchedulingPolicy final : public __SchedulingPolicy<RRSchedulingPolicy>
|
51{
52 public:
| 47{
48 public:
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53 RRSchedulingPolicy() : scheduleList(nullptr) { }
| 49 RRSchedulingPolicy()
50 {
51 }
|
54
| 52
|
55 Wavefront* chooseWave();
56 void bindList(std::vector<Wavefront*> *list);
| 53 static Wavefront*
54 __chooseWave(std::vector<Wavefront*> *sched_list)
55 {
56 panic_if(!sched_list->size(), "RR scheduling policy sched list is "
57 "empty.\n");
58 Wavefront *selected_wave(nullptr);
|
57
| 59
|
58 private:
59 // List of waves which are participating in scheduling.
60 // This scheduler selects one wave from this list based on
61 // round robin policy
62 std::vector<Wavefront*> *scheduleList;
| 60 /**
61 * For RR policy, select the wave that is at the front of
62 * the list. The selected wave is popped out from the schedule
63 * list immediately after selection to avoid starvation. It
64 * is the responsibility of the module invoking the RR scheduler
65 * to make sure it is scheduling eligible waves are added to the
66 * back of the schedule list.
67 */
68 selected_wave = sched_list->front();
69 panic_if(!selected_wave, "No wave found by RR scheduling policy.\n");
70 sched_list->erase(sched_list->begin());
71
72 return selected_wave;
73 }
|
63};
64
| 74};
75
|
65#endif // __RR_SCHEDULING_POLICY_HH__
| 76#endif // __GPU_COMPUTE_RR_SCHEDULING_POLICY_HH__
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| |