8df3e8c965
方案描述：
1.周期软件定时器超时添加一个startTime字段，用于记录当前软件定时器的开始计时的时间，
在定时器响应时，开始时间修改为上一次响应的结束时间(消除了中断执行时间对软件定时器
的影响)。
2.在执行tick中断的过程当中，持有tick动态计算锁，保证在该过程中不会触发tick周期
的计算，在tick中断结束时统一计算设置。 --- 提升tick中断的执行效率
3.在设置tick周期时，减掉tick中断执行的时间，减小周期动态化带来的时间误差
4.新增LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI配置宏，用于配置tick中断的最小响应精度
Close #I43UQJ
Signed-off-by: zhushengle <zhushengle@huawei.com>
Change-Id: Icd1159a1890046b13602b7a18dcd6234d5c61a89
112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "los_mp.h"
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#include "los_init.h"
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#include "los_percpu_pri.h"
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#include "los_sched_pri.h"
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#include "los_swtmr.h"
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#include "los_task_pri.h"
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#ifdef LOSCFG_KERNEL_SMP
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VOID LOS_MpSchedule(UINT32 target)
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{
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UINT32 cpuid = ArchCurrCpuid();
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target &= ~(1U << cpuid);
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HalIrqSendIpi(target, LOS_MP_IPI_SCHEDULE);
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}
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VOID OsMpWakeHandler(VOID)
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{
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/* generic wakeup ipi, do nothing */
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}
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VOID OsMpScheduleHandler(VOID)
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{
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/*
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* set schedule flag to differ from wake function,
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* so that the scheduler can be triggered at the end of irq.
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*/
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OsPercpuGet()->schedFlag |= INT_PEND_RESCH;
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}
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VOID OsMpHaltHandler(VOID)
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{
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(VOID)LOS_IntLock();
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OsPercpuGet()->excFlag = CPU_HALT;
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while (1) {}
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}
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VOID OsMpCollectTasks(VOID)
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{
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LosTaskCB *taskCB = NULL;
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UINT32 taskID = 0;
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UINT32 ret;
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/* recursive checking all the available task */
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for (; taskID <= g_taskMaxNum; taskID++) {
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taskCB = &g_taskCBArray[taskID];
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if (OsTaskIsUnused(taskCB) || OsTaskIsRunning(taskCB)) {
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continue;
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}
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/*
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* though task status is not atomic, this check may success but not accomplish
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* the deletion; this deletion will be handled until the next run.
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*/
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if (taskCB->signal & SIGNAL_KILL) {
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ret = LOS_TaskDelete(taskID);
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if (ret != LOS_OK) {
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PRINT_WARN("GC collect task failed err:0x%x\n", ret);
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}
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}
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}
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}
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UINT32 OsMpInit(VOID)
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{
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UINT16 swtmrId;
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(VOID)LOS_SwtmrCreate(OS_MP_GC_PERIOD, LOS_SWTMR_MODE_PERIOD,
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(SWTMR_PROC_FUNC)OsMpCollectTasks, &swtmrId, 0);
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(VOID)LOS_SwtmrStart(swtmrId);
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return LOS_OK;
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}
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LOS_MODULE_INIT(OsMpInit, LOS_INIT_LEVEL_KMOD_TASK);
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#endif
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