Description zhixin01 2025-02-25 14:10:52 UTC

[缺陷描述]：
perf-sanity-tests测试套Check_Arm_CoreSight_trace_data_recording_and_synthesized_samples用例执行失败，cat: '/sys/bus/coresight/devices/etm*/cpu': No such file or directory

测试日志如下：
#perf test -v 105
105: Check Arm CoreSight trace data recording and synthesized samples:
--- start ---
test child forked, pid 1237752
cat: '/sys/bus/coresight/devices/etm*/cpu': No such file or directory
Recording trace with system wide mode
Looking at perf.data file for dumping branch samples:
CoreSight system wide testing: FAIL
Recording trace with snapshot mode
/usr/libexec/perf-core/tests/shell/test_arm_coresight.sh: line 173: kill: (1237762) - No such process
/usr/libexec/perf-core/tests/shell/test_arm_coresight.sh: line 176: kill: (1237762) - No such process
Looking at perf.data file for dumping branch samples:
CoreSight snapshot testing: FAIL
Recording trace with '-e cs_etm/timestamp=0/ --per-thread'
Looking at perf.data file for dumping branch samples:
CoreSight basic testing with '-e cs_etm/timestamp=0/ --per-thread': FAIL
Recording trace with '-e cs_etm/timestamp=1/ --per-thread'
Looking at perf.data file for dumping branch samples:
CoreSight basic testing with '-e cs_etm/timestamp=1/ --per-thread': FAIL
Recording trace with '-e cs_etm/timestamp=0/ -a'
Looking at perf.data file for dumping branch samples:
CoreSight basic testing with '-e cs_etm/timestamp=0/ -a': FAIL
Recording trace with '-e cs_etm/timestamp=1/ -a'
Looking at perf.data file for dumping branch samples:
CoreSight basic testing with '-e cs_etm/timestamp=1/ -a': FAIL
Recording trace with '-e cs_etm/timestamp=0/'
Looking at perf.data file for dumping branch samples:
CoreSight basic testing with '-e cs_etm/timestamp=0/': FAIL
Recording trace with '-e cs_etm/timestamp=1/'
Looking at perf.data file for dumping branch samples:
CoreSight basic testing with '-e cs_etm/timestamp=1/': FAIL
test child finished with -1
---- end ----
Check Arm CoreSight trace data recording and synthesized samples: FAILED!

[重现概率]：
必现

[重现环境]：
环境信息：倚天710机器
11.163.178.238

#uname -r
6.6.71-3_rc1.al8.aarch64

#cat /etc/os-release
NAME="Alibaba Cloud Linux"
VERSION="3 (Soaring Falcon)"
ID="alinux"
ID_LIKE="rhel fedora centos anolis"
VERSION_ID="3"
UPDATE_ID="10"
PLATFORM_ID="platform:al8"
PRETTY_NAME="Alibaba Cloud Linux 3 (Soaring Falcon)"
ANSI_COLOR="0;31"
HOME_URL="https://www.aliyun.com/"

#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
CPU MHz:             2750.000
BogoMIPS:            100.00
Hypervisor vendor:   Alibaba
Virtualization type: full
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 sb dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh

#free -h
              total        used        free      shared  buff/cache   available
Mem:          125Gi       3.6Gi       121Gi        12Mi       1.0Gi       122Gi
Swap:         2.0Gi          0B       2.0Gi

#cat /proc/cmdline
BOOT_IMAGE=(hd0,gpt2)/boot/vmlinuz-6.6.71-3_rc1.al8.aarch64 root=UUID=d0af582f-7147-41de-85e3-deb2e14cde99 ro biosdevname=0 rd.driver.pre=ahci iommu.passthrough=1 iommu.strict=0 nospectre_bhb ssbd=force-off systemd.unified_cgroup_hierarchy=0 cgroup.memory=nokmem console=ttyS0,115200 fsck.repair=yes crashkernel=0M-2G:0M,2G-256G:256M,256G-1024G:320M,1024G-:384M

#rpm -qa |grep perf
iperf3-3.9-13.al8.1.aarch64
python3-perf-6.6.71-3_rc1.al8.aarch64
gperf-3.1-5.1.al8.aarch64
perf-6.6.71-3_rc1.al8.aarch64

[重现步骤]：
#安装随内核发布的perf包
https://koji.alibaba-inc.com/taskinfo?taskID=730244

# 执行测试
perf test -v 105

[期望结果]：
用例执行PASS

[实际结果]：
用例执行Fail