Description of problem: perf_event_tests测试套下的events用例失败，Unexpected char ? Testing format of event files under /sys/... 该用例在更换的倚天机型是failed，原来的kunpeng机型用例pass 测试日志如下： [root@localhost perf_event_tests]# ./tests/sysfs/events Testing files under /sys/bus/event_source/devices To see if they match ABI documented in Documentation/ABI/testing/sysfs-bus-event_source-devices-format Documentation/ABI/testing/sysfs-bus-event_source-devices-events Base 10 number used: type=0x7770,eventid=0x2,wp_dev_sel=?,wp_chn_sel=?,wp_grp=?,wp_val=?,wp_mask=? This has since been allowed by the ABI Unexpected char ? Testing format of event files under /sys/... FAILED Version-Release number of selected component (if applicable): # perf -v perf version 5.10.134-759.git.f019c570a1.an8.aarch64 How reproducible: 必现 Steps to Reproduce: git clone https://github.com/deater/perf_event_tests.git cd perf_event_tests make 执行用例 ./tests/sysfs/events Actual results: 用例执行fail Expected results: 用例执行pass Additional info: 内核信息：# uname -r 5.10.134-759.git.f019c570a1.an8.aarch64 版本信息：# cat /etc/os-release NAME="Anolis OS" VERSION="8.8" ID="anolis" ID_LIKE="rhel fedora centos" VERSION_ID="8.8" PLATFORM_ID="platform:an8" PRETTY_NAME="Anolis OS 8.8" ANSI_COLOR="0;31" HOME_URL="https://openanolis.cn/" 内存信息：# free -h total used free shared buff/cache available Mem: 250Gi 4.8Gi 245Gi 4.0Mi 988Mi 243Gi Swap: 0B 0B 0B cpu信息：# lscpu Architecture: aarch64 Byte Order: Little Endian CPU(s): 128 On-line CPU(s) list: 0-127 Thread(s) per core: 1 Core(s) per socket: 128 Socket(s): 1 NUMA node(s): 2 Vendor ID: ARM BIOS Vendor ID: T-HEAD Model: 0 Model name: Neoverse-N2 BIOS Model name: Yitian710-128 Stepping: r0p0 BogoMIPS: 100.00 L1d cache: 64K L1i cache: 64K L2 cache: 1024K L3 cache: 65536K NUMA node0 CPU(s): 0-63 NUMA node1 CPU(s): 64-127 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm ssbs sb dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh