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
This commit is contained in:
LiteOS2021
2021-09-14 10:38:15 +08:00
parent 92f33ab9c4
commit 6e0a3f10bb
54 changed files with 4690 additions and 35 deletions
+28
View File
@@ -33,6 +33,7 @@
#define _LOS_MP_H
#include "los_config.h"
#include "los_list.h"
#ifdef __cplusplus
#if __cplusplus
@@ -48,8 +49,13 @@ typedef enum {
LOS_MP_IPI_WAKEUP,
LOS_MP_IPI_SCHEDULE,
LOS_MP_IPI_HALT,
#ifdef LOSCFG_KERNEL_SMP_CALL
LOS_MP_IPI_FUNC_CALL,
#endif
} MP_IPI_TYPE;
typedef VOID (*SMP_FUNC_CALL)(VOID *args);
#ifdef LOSCFG_KERNEL_SMP
extern VOID LOS_MpSchedule(UINT32 target);
extern VOID OsMpWakeHandler(VOID);
@@ -63,6 +69,28 @@ STATIC INLINE VOID LOS_MpSchedule(UINT32 target)
}
#endif
#ifdef LOSCFG_KERNEL_SMP_CALL
typedef struct {
LOS_DL_LIST node;
SMP_FUNC_CALL func;
VOID *args;
} MpCallFunc;
/**
* It is used to call function on target cpus by sending ipi, and the first param is target cpu mask value.
*/
extern VOID OsMpFuncCall(UINT32 target, SMP_FUNC_CALL func, VOID *args);
extern VOID OsMpFuncCallHandler(VOID);
#else
INLINE VOID OsMpFuncCall(UINT32 target, SMP_FUNC_CALL func, VOID *args)
{
(VOID)target;
if (func != NULL) {
func(args);
}
}
#endif /* LOSCFG_KERNEL_SMP_CALL */
#ifdef __cplusplus
#if __cplusplus
}