2020-09-08 10:21:39 +08:00
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menu "Kernel"
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config KERNEL_SMP
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bool "Enable Kernel SMP"
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default n
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help
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This option will enable smp support of LiteOS.
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config KERNEL_SMP_CORE_NUM
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int "Muti-processing Core Numbers"
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default 2
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depends on KERNEL_SMP
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help
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This represents the number of muti-processing cores.
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config KERNEL_SMP_LOCKDEP
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bool "Enable Spinlock Lockdep Check"
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default n
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depends on KERNEL_SMP
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help
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This option will enable spinlock lockdep check.
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config KERNEL_SMP_TASK_SYNC
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bool "Enable Synchronized Task Operations"
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default n
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depends on KERNEL_SMP
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help
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This option will enable task synchronized operate task across cores.
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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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config KERNEL_SMP_CALL
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bool "Enable Function call cross Multi-core"
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default n
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depends on KERNEL_SMP
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help
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This option will enable function call on multi-core.
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2020-09-08 10:21:39 +08:00
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config KERNEL_SCHED_STATISTICS
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bool "Enable Scheduler statistics"
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default n
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depends on KERNEL_SMP
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help
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This option will enable schedulder statistics.
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2021-03-29 14:30:09 +08:00
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config KERNEL_MMU
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bool "Enable MMU"
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default y
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help
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This option will enable mmu.
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config KERNEL_VM
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bool "Enable VM"
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default y
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depends on KERNEL_MMU
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help
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This option will enable vmm, pmm, page fault, etc.
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2021-03-26 20:12:50 +08:00
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config KERNEL_SYSCALL
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bool "Enable Syscall"
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default y
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2021-03-29 14:30:09 +08:00
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depends on KERNEL_VM
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2021-03-26 20:12:50 +08:00
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help
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This option will enable syscall.
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2021-09-06 16:55:45 +08:00
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######################### config options of extended #####################
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source "kernel/extended/Kconfig"
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2020-09-08 10:21:39 +08:00
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endmenu
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