From 1a7d3f9fcb76a68540dd948f91413533a383bfde Mon Sep 17 00:00:00 2001
From: Tony Gutierrez <anthony.gutierrez@amd.com>
Date: Tue, 19 Jan 2016 14:28:22 -0500
Subject: gpu-compute: AMD's baseline GPU model

---
 src/gpu-compute/rr_scheduling_policy.cc | 67 +++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 src/gpu-compute/rr_scheduling_policy.cc

(limited to 'src/gpu-compute/rr_scheduling_policy.cc')

diff --git a/src/gpu-compute/rr_scheduling_policy.cc b/src/gpu-compute/rr_scheduling_policy.cc
new file mode 100644
index 000000000..5d3591901
--- /dev/null
+++ b/src/gpu-compute/rr_scheduling_policy.cc
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2014-2015 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * For use for simulation and test purposes only
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Sooraj Puthoor
+ */
+
+#include "gpu-compute/rr_scheduling_policy.hh"
+
+#include "gpu-compute/wavefront.hh"
+
+Wavefront*
+RRSchedulingPolicy::chooseWave()
+{
+    Wavefront *selectedWave = nullptr;
+
+    // Check to make sure ready list had atleast one schedulable wave
+    if (scheduleList->size()) {
+        // For RR policy, select the wave which is at the
+        // front of the list. The selected wave is popped
+        // out from the schedule list immediately after selection
+        // to avoid starvation. It is the responsibility of the
+        // module invoking the RR scheduler to make surei scheduling
+        // eligible waves are added to the back of the schedule
+        // list
+        selectedWave = scheduleList->front();
+        scheduleList->erase(scheduleList->begin() + 0);
+    } else {
+        panic("Empty ready list");
+    }
+
+    return selectedWave;
+}
+
+void
+RRSchedulingPolicy::bindList(std::vector<Wavefront*> *list)
+{
+    scheduleList = list;
+}
-- 
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