mathexpr_powermodel.cc revision 11967
17405SAli.Saidi@ARM.com/* 212667Schuan.zhu@arm.com * Copyright (c) 2016-2017 ARM Limited 37405SAli.Saidi@ARM.com * All rights reserved 47405SAli.Saidi@ARM.com * 57405SAli.Saidi@ARM.com * The license below extends only to copyright in the software and shall 67405SAli.Saidi@ARM.com * not be construed as granting a license to any other intellectual 77405SAli.Saidi@ARM.com * property including but not limited to intellectual property relating 87405SAli.Saidi@ARM.com * to a hardware implementation of the functionality of the software 97405SAli.Saidi@ARM.com * licensed hereunder. You may use the software subject to the license 107405SAli.Saidi@ARM.com * terms below provided that you ensure that this notice is replicated 117405SAli.Saidi@ARM.com * unmodified and in its entirety in all distributions of the software, 127405SAli.Saidi@ARM.com * modified or unmodified, in source code or in binary form. 137405SAli.Saidi@ARM.com * 147405SAli.Saidi@ARM.com * Redistribution and use in source and binary forms, with or without 157405SAli.Saidi@ARM.com * modification, are permitted provided that the following conditions are 167405SAli.Saidi@ARM.com * met: redistributions of source code must retain the above copyright 177405SAli.Saidi@ARM.com * notice, this list of conditions and the following disclaimer; 187405SAli.Saidi@ARM.com * redistributions in binary form must reproduce the above copyright 197405SAli.Saidi@ARM.com * notice, this list of conditions and the following disclaimer in the 207405SAli.Saidi@ARM.com * documentation and/or other materials provided with the distribution; 217405SAli.Saidi@ARM.com * neither the name of the copyright holders nor the names of its 227405SAli.Saidi@ARM.com * contributors may be used to endorse or promote products derived from 237405SAli.Saidi@ARM.com * this software without specific prior written permission. 247405SAli.Saidi@ARM.com * 257405SAli.Saidi@ARM.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 267405SAli.Saidi@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 277405SAli.Saidi@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 287405SAli.Saidi@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 297405SAli.Saidi@ARM.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 307405SAli.Saidi@ARM.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 317405SAli.Saidi@ARM.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 327405SAli.Saidi@ARM.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 337405SAli.Saidi@ARM.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 347405SAli.Saidi@ARM.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 357405SAli.Saidi@ARM.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 367405SAli.Saidi@ARM.com * 377405SAli.Saidi@ARM.com * Authors: David Guillen Fandos 387405SAli.Saidi@ARM.com */ 397405SAli.Saidi@ARM.com 407405SAli.Saidi@ARM.com#include "sim/power/mathexpr_powermodel.hh" 417405SAli.Saidi@ARM.com 4210461SAndreas.Sandberg@ARM.com#include "base/statistics.hh" 439050Schander.sudanthi@arm.com#include "params/MathExprPowerModel.hh" 4412406Sgabeblack@google.com#include "sim/mathexpr.hh" 4512605Sgiacomo.travaglini@arm.com#include "sim/power/thermal_model.hh" 4611793Sbrandon.potter@amd.com#include "sim/sim_object.hh" 478887Sgeoffrey.blake@arm.com 488232Snate@binkert.orgMathExprPowerModel::MathExprPowerModel(const Params *p) 498232Snate@binkert.org : PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st), failed(false) 5010844Sandreas.sandberg@arm.com{ 519384SAndreas.Sandberg@arm.com // Calculate the name of the object we belong to 527678Sgblack@eecs.umich.edu std::vector<std::string> path; 538059SAli.Saidi@ARM.com tokenize(path, name(), '.', true); 548284SAli.Saidi@ARM.com // It's something like xyz.power_model.pm2 557405SAli.Saidi@ARM.com assert(path.size() > 2); 567405SAli.Saidi@ARM.com for (unsigned i = 0; i < path.size() - 2; i++) 577405SAli.Saidi@ARM.com basename += path[i] + "."; 587405SAli.Saidi@ARM.com} 599384SAndreas.Sandberg@arm.com 6010461SAndreas.Sandberg@ARM.comvoid 6110461SAndreas.Sandberg@ARM.comMathExprPowerModel::startup() 6211165SRekai.GonzalezAlberquilla@arm.com{ 6312109SRekai.GonzalezAlberquilla@arm.com // Create a map with stats and pointers for quick access 6412714Sgiacomo.travaglini@arm.com // Has to be done here, since we need access to the statsList 6512714Sgiacomo.travaglini@arm.com for (auto & i: Stats::statsList()) 669384SAndreas.Sandberg@arm.com if (i->name.find(basename) == 0) 6711770SCurtis.Dunham@arm.com stats_map[i->name.substr(basename.size())] = i; 6810037SARM gem5 Developers 6910461SAndreas.Sandberg@ARM.com tryEval(st_expr); 7010461SAndreas.Sandberg@ARM.com const bool st_failed = failed; 7110461SAndreas.Sandberg@ARM.com 7210461SAndreas.Sandberg@ARM.com tryEval(dyn_expr); 7310461SAndreas.Sandberg@ARM.com const bool dyn_failed = failed; 7410461SAndreas.Sandberg@ARM.com 7510609Sandreas.sandberg@arm.com if (st_failed || dyn_failed) { 7610609Sandreas.sandberg@arm.com const auto *p = dynamic_cast<const Params *>(params()); 7710609Sandreas.sandberg@arm.com assert(p); 7810037SARM gem5 Developers 7910037SARM gem5 Developers fatal("Failed to evaluate power expressions:\n%s%s%s\n", 8010037SARM gem5 Developers st_failed ? p->st : "", 8110037SARM gem5 Developers st_failed && dyn_failed ? "\n" : "", 8211771SCurtis.Dunham@arm.com dyn_failed ? p->dyn : ""); 8310037SARM gem5 Developers } 8410037SARM gem5 Developers} 8510037SARM gem5 Developers 8610037SARM gem5 Developersdouble 8710037SARM gem5 DevelopersMathExprPowerModel::eval(const MathExpr &expr) const 8810037SARM gem5 Developers{ 8911771SCurtis.Dunham@arm.com const double value = tryEval(expr); 9010037SARM gem5 Developers 9110037SARM gem5 Developers // This shouldn't happen unless something went wrong the equations 9210037SARM gem5 Developers // were verified in startup(). 9310037SARM gem5 Developers panic_if(failed, "Failed to evaluate power expression '%s'\n", 9410037SARM gem5 Developers expr.toStr()); 9512477SCurtis.Dunham@arm.com 9610037SARM gem5 Developers return value; 9710037SARM gem5 Developers} 989384SAndreas.Sandberg@arm.com 999384SAndreas.Sandberg@arm.comdouble 1009384SAndreas.Sandberg@arm.comMathExprPowerModel::tryEval(const MathExpr &expr) const 10112479SCurtis.Dunham@arm.com{ 10212479SCurtis.Dunham@arm.com failed = false; 1039384SAndreas.Sandberg@arm.com const double value = expr.eval( 1049384SAndreas.Sandberg@arm.com std::bind(&MathExprPowerModel::getStatValue, 1059384SAndreas.Sandberg@arm.com this, std::placeholders::_1) 1069384SAndreas.Sandberg@arm.com ); 1079384SAndreas.Sandberg@arm.com 1089384SAndreas.Sandberg@arm.com return value; 1097427Sgblack@eecs.umich.edu} 1107427Sgblack@eecs.umich.edu 1117427Sgblack@eecs.umich.edu 1129385SAndreas.Sandberg@arm.comdouble 1139385SAndreas.Sandberg@arm.comMathExprPowerModel::getStatValue(const std::string &name) const 1147427Sgblack@eecs.umich.edu{ 1157427Sgblack@eecs.umich.edu using namespace Stats; 11610037SARM gem5 Developers 11710037SARM gem5 Developers // Automatic variables: 11810037SARM gem5 Developers if (name == "temp") 11910037SARM gem5 Developers return _temp; 12010037SARM gem5 Developers 12110037SARM gem5 Developers // Try to cast the stat, only these are supported right now 12212690Sgiacomo.travaglini@arm.com const auto it = stats_map.find(name); 12312690Sgiacomo.travaglini@arm.com if (it == stats_map.cend()) { 12412690Sgiacomo.travaglini@arm.com warn("Failed to find stat '%s'\n", name); 12512690Sgiacomo.travaglini@arm.com failed = true; 12612690Sgiacomo.travaglini@arm.com return 0; 12712690Sgiacomo.travaglini@arm.com } 12812690Sgiacomo.travaglini@arm.com 12912690Sgiacomo.travaglini@arm.com const Info *info = it->second; 13012690Sgiacomo.travaglini@arm.com 13112690Sgiacomo.travaglini@arm.com auto si = dynamic_cast<const ScalarInfo *>(info); 13212690Sgiacomo.travaglini@arm.com if (si) 13312690Sgiacomo.travaglini@arm.com return si->value(); 13410037SARM gem5 Developers auto fi = dynamic_cast<const FormulaInfo *>(info); 13510037SARM gem5 Developers if (fi) 13610037SARM gem5 Developers return fi->total(); 13710037SARM gem5 Developers 13810037SARM gem5 Developers panic("Unknown stat type!\n"); 13910037SARM gem5 Developers} 14010037SARM gem5 Developers 14110037SARM gem5 Developersvoid 1427427Sgblack@eecs.umich.eduMathExprPowerModel::regStats() 1437427Sgblack@eecs.umich.edu{ 1447427Sgblack@eecs.umich.edu PowerModelState::regStats(); 1457427Sgblack@eecs.umich.edu} 1467427Sgblack@eecs.umich.edu 1477427Sgblack@eecs.umich.eduMathExprPowerModel* 14810037SARM gem5 DevelopersMathExprPowerModelParams::create() 14910037SARM gem5 Developers{ 15010037SARM gem5 Developers return new MathExprPowerModel(this); 15110037SARM gem5 Developers} 1527427Sgblack@eecs.umich.edu