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
142 lines
4.0 KiB
C
142 lines
4.0 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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#ifndef _LOS_HOOK_H
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#define _LOS_HOOK_H
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#include "los_config.h"
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#include "los_err.h"
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#include "los_errno.h"
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#ifdef LOSCFG_KERNEL_HOOK
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#include "los_hook_types.h"
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#endif
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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#ifdef LOSCFG_KERNEL_HOOK
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/**
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* @ingroup los_hook
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* Hook error code: The hook pool is insufficient.
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*
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* Value: 0x02001f00
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*
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* Solution: Deregister the registered hook.
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*/
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#define LOS_ERRNO_HOOK_POOL_IS_FULL LOS_ERRNO_OS_ERROR(LOS_MOD_HOOK, 0x00)
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/**
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* @ingroup los_hook
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* Hook error code: Invalid parameter.
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*
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* Value: 0x02001f01
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*
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* Solution: Check the input parameters of LOS_HookReg.
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*/
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#define LOS_ERRNO_HOOK_REG_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HOOK, 0x01)
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/**
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* @ingroup los_hook
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* Hook error code: Invalid parameter.
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*
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* Value: 0x02001f02
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*
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* Solution: Check the input parameters of LOS_HookUnReg.
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*/
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#define LOS_ERRNO_HOOK_UNREG_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HOOK, 0x02)
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/**
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* @ingroup los_hook
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* @brief Registration of hook function.
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*
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* @par Description:
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* This API is used to register hook function.
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*
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* @attention
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* <ul>
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* <li> None.</li>
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* </ul>
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*
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* @param hookType [IN] Register the type of the hook.
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* @param hookFn [IN] The function to be registered.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_hook.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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#define LOS_HookReg(hookType, hookFn) hookType##_RegHook(hookFn)
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/**
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* @ingroup los_hook
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* @brief Deregistration of hook function.
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*
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* @par Description:
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* This API is used to deregister hook function.
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*
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* @attention
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* <ul>
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* <li> None.</li>
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* </ul>
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*
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* @param hookType [IN] Deregister the type of the hook.
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* @param hookFn [IN] The function to be deregistered.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_hook.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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#define LOS_HookUnReg(hookType, hookFn) hookType##_UnRegHook(hookFn)
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/**
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* Call hook functions.
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*/
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#define OsHookCall(hookType, ...) hookType##_CallHook(__VA_ARGS__)
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#else
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#define LOS_HookReg(hookType, hookFn)
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#define LOS_HookUnReg(hookType, hookFn)
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#define OsHookCall(hookType, ...)
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#endif
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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#endif /* _LOS_HOOK_H */
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