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[OLK-6.6] arm64: cpufeature: add cmdline option for disable lse

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需求 成员
创建于  
2021-11-22 20:58

bugzilla: 23734

增加启动参数关掉 ARM64 LSE

CSP 分布式场景性能问题分析。

1620 的 LSE 原子操作在不同场景下,性能有好有坏,提供一个 cmdline 接口,让使用者可以选择开关 LSE, 不用重编内核。

评论 (3)

Wei Li 创建了任务

Hi stkid, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at
https://gitee.com/openeuler/community/blob/master/en/sig-infrastructure/command.md.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers: @Xie XiuQi, @YangYingliang, @成坚 (CHENG Jian).

openeuler-ci-bot 添加了
 
sig/Kernel
标签
Xie XiuQi 任务类型任务 修改为需求
Xie XiuQi 任务状态待办的 修改为新建
Xie XiuQi 关联分支设置为OLK-5.10

各分支合入情况如下所示:

分支 commit tag
openEuler-1.0-LTS 01c4459db8d8f47f0604486c2f1f094ac1a48c74 tags/4.19.90-2001.1.0~2771
openEuler-1.0-LTS d5f326978b85f2ecf6b4a883fbaebae03f826d27 tags/4.19.90-2001.1.0~2298
成坚 (CHENG Jian) 修改了描述
成坚 (CHENG Jian) 修改了描述
zhengzengkai 通过src-openeuler/kernel Pull Request !418任务状态新建 修改为已完成
zhengzengkai 修改了标题
zhengzengkai 关联分支OLK-5.10 修改为OLK-6.6

OLK-6.6 test log:

* Before patch:

processor	: 15
BogoMIPS	: 125.00
Features	: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs
CPU implementer	: 0x41
CPU architecture: 8
CPU variant	: 0x4
CPU part	: 0xd0c
CPU revision	: 1

root@localhost:~# uname -a
Linux localhost 6.6.0+ #8 SMP Mon Jan 15 17:50:52 CST 2024 aarch64 GNU/Linux
root@localhost:~# cat /proc/cmdline 
root=/dev/root rw rootfstype=9p rootflags=trans=virtio console=ttyAMA0 kgdboc=ttyAMA0 kdb.cmd_enable=1 earlyprintk=serial oops=panic nmi_watchdog=nopanic panic_on_warn=0 ftrace_dump_on_oops=orig_cpu rodata=n vsyscall=native net.ifnames=0 biosdevname=0 nohz=off nokaslr slub_debug irqchip.gicv3_pseudo_nmi=0 disable_sdei_nmi_watchdog hardlockup_enable=on  pmu_nmi_enable hardlockup_cpu_freq=auto selinux=0 mm.use_clearpage_stnp=1 lse=off 
root@localhost:~# 

* After patch:

processor	: 15
BogoMIPS	: 125.00
Features	: fp asimd evtstrm aes pmull sha1 sha2 crc32 fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs
CPU implementer	: 0x41
CPU architecture: 8
CPU variant	: 0x4
CPU part	: 0xd0c
CPU revision	: 1

root@localhost:~# uname -a
Linux localhost 6.6.0+ #8 SMP Mon Jan 15 17:50:52 CST 2024 aarch64 GNU/Linux
root@localhost:~# cat /proc/cmdline 
root=/dev/root rw rootfstype=9p rootflags=trans=virtio console=ttyAMA0 kgdboc=ttyAMA0 kdb.cmd_enable=1 earlyprintk=serial oops=panic nmi_watchdog=nopanic panic_on_warn=0 ftrace_dump_on_oops=orig_cpu rodata=n vsyscall=native net.ifnames=0 biosdevname=0 nohz=off nokaslr slub_debug irqchip.gicv3_pseudo_nmi=0 disable_sdei_nmi_watchdog hardlockup_enable=on  pmu_nmi_enable hardlockup_cpu_freq=auto selinux=0 mm.use_clearpage_stnp=1 lse=off arm64.nolse
root@localhost:~# 

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