2020-09-08 10:21:39 +08:00
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/*
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2021-03-11 18:43:57 +08:00
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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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2020-09-08 10:21:39 +08:00
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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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/**
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* @defgroup los_err Error handling
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* @ingroup kernel
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*/
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#ifndef _LOS_ERR_H
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#define _LOS_ERR_H
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#include "los_typedef.h"
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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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/**
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* @ingroup los_err
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* @brief Define the pointer to the error handling function.
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*
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* @par Description:
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* This API is used to define the pointer to the error handling function.
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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 fileName [IN] Log file that stores error information.
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* @param lineNo [IN] Line number of the erroneous line.
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* @param errorNo [IN] Error code.
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* @param paraLen [IN] Length of the input parameter pPara.
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* @param para [IN] User label of the error.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_err.h: the header file that contains the API declaration.</li></ul>
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* @see None.
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*/
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typedef VOID (*LOS_ERRORHANDLE_FUNC)(CHAR *fileName,
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UINT32 lineNo,
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UINT32 errorNo,
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UINT32 paraLen,
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VOID *para);
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/**
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* @ingroup los_err
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* @brief Error handling function.
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*
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* @par Description:
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* This API is used to perform different operations according to error types.
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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 fileName [IN] Log file that stores error information.
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* @param lineNo [IN] Line number of the erroneous line which should not be OS_ERR_MAGIC_WORD.
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* @param errorNo [IN] Error code.
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* @param paraLen [IN] Length of the input parameter pPara.
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* @param para [IN] User label of the error.
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*
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* @retval LOS_OK The error is successfully processed.
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* @par Dependency:
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* <ul><li>los_err.h: the header file that contains the API declaration.</li></ul>
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* @see None
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*/
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extern UINT32 LOS_ErrHandle(CHAR *fileName, UINT32 lineNo,
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UINT32 errorNo, UINT32 paraLen,
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VOID *para);
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/**
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* @ingroup los_err
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* @brief set Error handling function.
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*
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* @param fun [IN] the error handle function.
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*/
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extern VOID LOS_SetErrHandleHook(LOS_ERRORHANDLE_FUNC fun);
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enum LOS_MOUDLE_ID {
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LOS_MOD_SYS = 0x0,
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LOS_MOD_MEM = 0x1,
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LOS_MOD_TSK = 0x2,
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LOS_MOD_SWTMR = 0x3,
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LOS_MOD_TICK = 0x4,
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LOS_MOD_MSG = 0x5,
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LOS_MOD_QUE = 0x6,
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LOS_MOD_SEM = 0x7,
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LOS_MOD_MBOX = 0x8,
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LOS_MOD_HWI = 0x9,
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LOS_MOD_HWWDG = 0xa,
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LOS_MOD_CACHE = 0xb,
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LOS_MOD_HWTMR = 0xc,
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LOS_MOD_MMU = 0xd,
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LOS_MOD_LOG = 0xe,
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LOS_MOD_ERR = 0xf,
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LOS_MOD_EXC = 0x10,
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LOS_MOD_CSTK = 0x11,
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LOS_MOD_MPU = 0x12,
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LOS_MOD_NMHWI = 0x13,
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LOS_MOD_TRACE = 0x14,
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LOS_MOD_KNLSTAT = 0x15,
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LOS_MOD_EVTTIME = 0x16,
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LOS_MOD_THRDCPUP = 0x17,
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LOS_MOD_IPC = 0x18,
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LOS_MOD_STKMON = 0x19,
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LOS_MOD_TIMER = 0x1a,
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LOS_MOD_RESLEAKMON = 0x1b,
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LOS_MOD_EVENT = 0x1c,
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LOS_MOD_MUX = 0X1d,
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LOS_MOD_CPUP = 0x1e,
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2021-08-31 16:36:04 +08:00
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LOS_MOD_HOOK = 0x1f,
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feat: L0-L1 支持Perf
1.【需求描述】:
L0-L1 支持Perf,提供2种模式的配置, 及3大类型的事件配置:
2种模式:计数模式(仅统计事件发生次数)、采样模式(收集上下文如任务ID、pc、backtrace等)。
3种事件类型:CPU硬件事件(cycle、branch、icache、dcache等)、OS软件事件(task switch、mux pend、irq等)、高精度周期事件(cpu clock)。
2.【方案描述】:
L0:
基于事件采样原理,以性能事件为基础,当事件发生时,相应的事件计数器溢出发生中断,在中断处理函数中记录事件信息,包括当前的pc、当前运 行的任务ID以及调用栈等信息。
L1:
新增perf字符设备,位于“dev/perf”,通过对设备节点的read\ioctl,实现用户态perf
BREAKING CHANGE:
1.新增一系列perf的对外API,位于los_perf.h中.
LOS_PerfInit配置采样数据缓冲区
LOS_PerfStart开启Perf采样
LOS_PerfStop停止Perf采样
LOS_PerfConfig配置Perf采样事件
LOS_PerfDataRead读取采样数据
LOS_PerfNotifyHookReg 注册采样数据缓冲区的钩子函数
LOS_PerfFlushHookReg 注册缓冲区刷cache的钩子
2. 用户态新增perf命令
【Usage】:
./perf [start] /[start id] Start perf.
./perf [stop] Stop perf.
./perf [read nBytes] Read nBytes raw data from perf buffer and print out.
./perf [list] List events to be used in -e.
./perf [stat] or [record] <option> <command>
-e, event selector. use './perf list' to list available events.
-p, event period.
-o, perf data output filename.
-t, taskId filter(whiltelist), if not set perf will sample all tasks.
-s, type of data to sample defined in PerfSampleType los_perf.h.
-P, processId filter(whiltelist), if not set perf will sample all processes.
-d, whether to prescaler (once every 64 counts), which only take effect on cpu cycle hardware event.
Close #I47I9A
Signed-off-by: LiteOS2021 <dinglu@huawei.com>
Change-Id: Ieb9b7483c85d1495df7c55bc0027f4309dff9814
2021-09-14 10:38:15 +08:00
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LOS_MOD_PERF = 0x20,
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2021-11-29 11:05:52 +08:00
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LOS_MOD_PM = 0x21,
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2020-09-08 10:21:39 +08:00
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LOS_MOD_SHELL = 0x31,
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LOS_MOD_DRIVER = 0x41,
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LOS_MOD_BUTT
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};
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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_ERR_H */
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