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Defer Sysman Frequency Initialization

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With this change, init for sysman Frequency API would not be done during zeInit.
Rather init and thereby Frequency API handle creation would be done only
when user explicitly requests to enumerate handles
using zesDeviceEnumFrequencyDomains.

Related-To: LOCI-3127

Signed-off-by: Kulkarni, Ashwin Kumar <ashwin.kumar.kulkarni@intel.com>
This commit is contained in:
Kulkarni, Ashwin Kumar
2022-07-06 12:07:17 +00:00
committed by Compute-Runtime-Automation
parent f53ae0a50e
commit 97a3368aad
5 changed files with 10 additions and 7 deletions
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6
level_zero/tools/source/sysman/frequency/frequency.cpp
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2020-2021 Intel Corporation
* Copyright (C) 2020-2022 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
@@ -11,6 +11,7 @@
#include "level_zero/tools/source/sysman/frequency/frequency_imp.h"
#include "level_zero/tools/source/sysman/frequency/os_frequency.h"
#include "level_zero/tools/source/sysman/os_sysman.h"
namespace L0 {
@@ -37,6 +38,9 @@ ze_result_t FrequencyHandleContext::init(std::vector<ze_device_handle_t> &device
}
ze_result_t FrequencyHandleContext::frequencyGet(uint32_t *pCount, zes_freq_handle_t *phFrequency) {
std::call_once(initFrequencyOnce, [this]() {
this->init(pOsSysman->getDeviceHandles());
});
uint32_t handleListSize = static_cast<uint32_t>(handleList.size());
uint32_t numToCopy = std::min(*pCount, handleListSize);
if (0 == *pCount || *pCount > handleListSize) {

2
level_zero/tools/source/sysman/frequency/frequency.h
View File

@@ -9,6 +9,7 @@
#include "level_zero/core/source/device/device.h"
#include <level_zero/zes_api.h>
#include <mutex>
#include <vector>
struct _zes_freq_handle_t {
@@ -64,6 +65,7 @@ struct FrequencyHandleContext {
private:
void createHandle(ze_device_handle_t deviceHandle, zes_freq_domain_t frequencyDomain);
std::once_flag initFrequencyOnce;
};
} // namespace L0

3
level_zero/tools/source/sysman/sysman_imp.cpp
View File

@@ -100,9 +100,6 @@ ze_result_t SysmanDeviceImp::init() {
if (pPowerHandleContext) {
pPowerHandleContext->init(deviceHandles, hCoreDevice);
}
if (pFrequencyHandleContext) {
pFrequencyHandleContext->init(deviceHandles);
}
if (pFabricPortHandleContext) {
pFabricPortHandleContext->init();
}