83 lines
3.4 KiB
C++
83 lines
3.4 KiB
C++
/*
|
|
* Copyright (c) 2018, Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <cstdint>
|
|
#include "runtime/helpers/kmd_notify_properties.h"
|
|
|
|
using namespace OCLRT;
|
|
|
|
bool KmdNotifyHelper::obtainTimeoutParams(int64_t &timeoutValueOutput,
|
|
bool quickKmdSleepRequest,
|
|
uint32_t currentHwTag,
|
|
uint32_t taskCountToWait,
|
|
FlushStamp flushStampToWait) {
|
|
int64_t multiplier = (currentHwTag < taskCountToWait) ? static_cast<int64_t>(taskCountToWait - currentHwTag) : 1;
|
|
if (!properties->enableKmdNotify && multiplier > KmdNotifyConstants::minimumTaskCountDiffToCheckAcLine) {
|
|
updateAcLineStatus();
|
|
}
|
|
|
|
quickKmdSleepRequest |= applyQuickKmdSleepForSporadicWait();
|
|
|
|
if (maxPowerSavingMode) {
|
|
timeoutValueOutput = 1;
|
|
} else if (!properties->enableKmdNotify && !acLineConnected) {
|
|
timeoutValueOutput = KmdNotifyConstants::timeoutInMicrosecondsForDisconnectedAcLine;
|
|
} else if (quickKmdSleepRequest && properties->enableQuickKmdSleep) {
|
|
timeoutValueOutput = properties->delayQuickKmdSleepMicroseconds;
|
|
} else {
|
|
timeoutValueOutput = getBaseTimeout(multiplier);
|
|
}
|
|
|
|
return flushStampToWait != 0 && (properties->enableKmdNotify || !acLineConnected);
|
|
}
|
|
|
|
bool KmdNotifyHelper::applyQuickKmdSleepForSporadicWait() const {
|
|
if (properties->enableQuickKmdSleepForSporadicWaits) {
|
|
auto timeDiff = getMicrosecondsSinceEpoch() - lastWaitForCompletionTimestampUs.load();
|
|
if (timeDiff > properties->delayQuickKmdSleepForSporadicWaitsMicroseconds) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void KmdNotifyHelper::updateLastWaitForCompletionTimestamp() {
|
|
lastWaitForCompletionTimestampUs = getMicrosecondsSinceEpoch();
|
|
}
|
|
|
|
int64_t KmdNotifyHelper::getMicrosecondsSinceEpoch() const {
|
|
auto now = std::chrono::high_resolution_clock::now().time_since_epoch();
|
|
return std::chrono::duration_cast<std::chrono::microseconds>(now).count();
|
|
}
|
|
|
|
void KmdNotifyHelper::overrideFromDebugVariable(int32_t debugVariableValue, int64_t &destination) {
|
|
if (debugVariableValue >= 0) {
|
|
destination = static_cast<int64_t>(debugVariableValue);
|
|
}
|
|
}
|
|
|
|
void KmdNotifyHelper::overrideFromDebugVariable(int32_t debugVariableValue, bool &destination) {
|
|
if (debugVariableValue >= 0) {
|
|
destination = !!(debugVariableValue);
|
|
}
|
|
}
|