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Diffstat (limited to 'src/sim/clocked_object.cc')
| -rw-r--r-- | src/sim/clocked_object.cc | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/src/sim/clocked_object.cc b/src/sim/clocked_object.cc deleted file mode 100644 index 9a682a4ce..000000000 --- a/src/sim/clocked_object.cc +++ /dev/null @@ -1,177 +0,0 @@ -/* - * Copyright (c) 2015 ARM Limited - * All rights reserved - * - * The license below extends only to copyright in the software and shall - * not be construed as granting a license to any other intellectual - * property including but not limited to intellectual property relating - * to a hardware implementation of the functionality of the software - * licensed hereunder. You may use the software subject to the license - * terms below provided that you ensure that this notice is replicated - * unmodified and in its entirety in all distributions of the software, - * modified or unmodified, in source code or in binary form. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * 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; - * neither the name of the copyright holders 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 - * OWNER 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. - * - * Authors: Akash Bagdia - * David Guillen Fandos - */ - -#include "sim/clocked_object.hh" - -#include "base/misc.hh" - -void -ClockedObject::serialize(CheckpointOut &cp) const -{ - unsigned int currPwrState = (unsigned int)_currPwrState; - - SERIALIZE_SCALAR(currPwrState); - SERIALIZE_SCALAR(prvEvalTick); -} - -void -ClockedObject::unserialize(CheckpointIn &cp) -{ - unsigned int currPwrState; - - UNSERIALIZE_SCALAR(currPwrState); - UNSERIALIZE_SCALAR(prvEvalTick); - - _currPwrState = Enums::PwrState(currPwrState); -} - -void -ClockedObject::pwrState(Enums::PwrState p) -{ - // Function should ideally be called only when there is a state change - if (_currPwrState == p) { - warn("ClockedObject: Already in the requested power state, request "\ - "ignored"); - return; - } - - // No need to compute stats if in the same tick, update state - // though. This can happen in cases like a) during start of the - // simulation multiple state changes happens in init/startup phase, - // b) one takes a decision to migrate state but decides to reverts - // back to the original state in the same tick if other conditions - // are not met elsewhere. Any state change related stats would have - // been recorded on previous call to the pwrState() function. - if (prvEvalTick == curTick()) { - warn("ClockedObject: More than one power state change request "\ - "encountered within the same simulation tick"); - _currPwrState = p; - return; - } - - // Record stats for previous state. - computeStats(); - - _currPwrState = p; - - numPwrStateTransitions++; -} - -void -ClockedObject::computeStats() -{ - // Calculate time elapsed from last (valid) state change - Tick elapsed_time = curTick() - prvEvalTick; - - pwrStateResidencyTicks[_currPwrState] += elapsed_time; - - // Time spent in CLK_GATED state, this might change depending on - // transition to other low power states in respective simulation - // objects. - if (_currPwrState == Enums::PwrState::CLK_GATED) { - pwrStateClkGateDist.sample(elapsed_time); - } - - prvEvalTick = curTick(); -} - -std::vector<double> -ClockedObject::pwrStateWeights() const -{ - // Get residency stats - std::vector<double> ret; - Stats::VCounter residencies; - pwrStateResidencyTicks.value(residencies); - - // Account for current state too! - Tick elapsed_time = curTick() - prvEvalTick; - residencies[_currPwrState] += elapsed_time; - - ret.resize(Enums::PwrState::Num_PwrState); - for (unsigned i = 0; i < Enums::PwrState::Num_PwrState; i++) - ret[i] = residencies[i] / - (pwrStateResidencyTicks.total() + elapsed_time); - - return ret; -} - -void -ClockedObject::regStats() -{ - SimObject::regStats(); - - using namespace Stats; - - numPwrStateTransitions - .name(params()->name + ".numPwrStateTransitions") - .desc("Number of power state transitions") - ; - - // Each sample is time in ticks - unsigned num_bins = std::max(params()->p_state_clk_gate_bins, 10U); - pwrStateClkGateDist - .init(params()->p_state_clk_gate_min, params()->p_state_clk_gate_max, - (params()->p_state_clk_gate_max / num_bins)) - .name(params()->name + ".pwrStateClkGateDist") - .desc("Distribution of time spent in the clock gated state") - .flags(pdf) - ; - - pwrStateResidencyTicks - .init(Enums::PwrState::Num_PwrState) - .name(params()->name + ".pwrStateResidencyTicks") - .desc("Cumulative time (in ticks) in various power states") - ; - for (int i = 0; i < Enums::PwrState::Num_PwrState; i++) { - pwrStateResidencyTicks.subname(i, Enums::PwrStateStrings[i]); - } - - numPwrStateTransitions = 0; - - /** - * For every stats dump, the power state residency and other distribution - * stats should be computed just before the dump to ensure correct stats - * value being reported for current dump window. It avoids things like - * having any unreported time spent in a power state to be forwarded to the - * next dump window which might have rather unpleasant effects (like - * perturbing the distribution stats). - */ - registerDumpCallback(new ClockedObjectDumpCallback(this)); -} |