dc9ec6856f
1.【需求描述】
L0~L1 支持Trace，提供两种工作模式：在线模式、离线缓存模式， 用于按时间线追踪系统事件，如任务切换、中断、ipc等。
2.【方案描述】
L0:
(1).在内核模块预置静态代码桩
(2).触发桩后，收集系统上下文信息
(3).离线模式则写入内存，用户可通过dump导出；
(4).在线模式通过pipeline对接IDE进行可视化解析和展示；
L1:
新增trace字符设备，位于"/dev/trace",通过对设备节点的read\write\ioctl，实现用户态trace；
BREAKING CHANGE:
1.新增一系列trace的对外API，位于los_trace.h中.
LOS_TRACE_EASY简易插桩
LOS_TRACE标准插桩
LOS_TraceInit配置Trace缓冲区的地址和大小
LOS_TraceStart开启事件记录
LOS_TraceStop停止事件记录
LOS_TraceRecordDump输出Trace缓冲区数据
LOS_TraceRecordGet获取Trace缓冲区的首地址
LOS_TraceReset清除Trace缓冲区中的事件
LOS_TraceEventMaskSet设置事件掩码，仅记录某些模块的事件
LOS_TraceHwiFilterHookReg注册过滤特定中断号事件的钩子函数
Close #I46WA0
Signed-off-by: LiteOS2021 <dinglu@huawei.com>
Change-Id: I6a8e64794c4852f2c2980993a06180e09ec6ee0d
105 lines
3.1 KiB
C
105 lines
3.1 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_trace_pri.h"
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#include "trace_pipeline.h"
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UINT32 OsTraceGetMaskTid(UINT32 taskId)
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{
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return taskId;
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}
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UINT32 OsTraceBufInit(UINT32 size)
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{
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(VOID)size;
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return LOS_OK;
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}
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VOID OsTraceSendHead(VOID)
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{
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TraceBaseHeaderInfo head = {
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.bigLittleEndian = TRACE_BIGLITTLE_WORD,
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.version = TRACE_VERSION(TRACE_MODE_ONLINE),
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.clockFreq = OS_SYS_CLOCK,
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};
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OsTraceDataSend(HEAD, sizeof(TraceBaseHeaderInfo), (UINT8 *)&head);
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}
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VOID OsTraceSendNotify(UINT32 type, UINT32 value)
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{
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TraceNotifyFrame frame = {
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.cmd = type,
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.param = value,
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};
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OsTraceDataSend(NOTIFY, sizeof(TraceNotifyFrame), (UINT8 *)&frame);
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}
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STATIC VOID OsTraceSendObj(const LosTaskCB *tcb)
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{
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ObjData obj;
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OsTraceSetObj(&obj, tcb);
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OsTraceDataSend(OBJ, sizeof(ObjData), (UINT8 *)&obj);
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}
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VOID OsTraceSendObjTable(VOID)
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{
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UINT32 loop;
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LosTaskCB *tcb = NULL;
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for (loop = 0; loop < g_taskMaxNum; ++loop) {
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tcb = g_taskCBArray + loop;
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if (tcb->taskStatus & OS_TASK_STATUS_UNUSED) {
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continue;
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}
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OsTraceSendObj(tcb);
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}
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}
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VOID OsTraceObjAdd(UINT32 eventType, UINT32 taskId)
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{
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if (OsTraceIsEnable()) {
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OsTraceSendObj(OS_TCB_FROM_TID(taskId));
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}
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}
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VOID OsTraceWriteOrSendEvent(const TraceEventFrame *frame)
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{
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OsTraceDataSend(EVENT, sizeof(TraceEventFrame), (UINT8 *)frame);
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}
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OfflineHead *OsTraceRecordGet(VOID)
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{
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return NULL;
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}
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