Comment 3 for bug 2051560

Noble verification

Confirming the bug:
$ uname -a
Linux n-perf 6.8.0-31-generic #31-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 00:40:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

$ sudo apt install linux-tools-$(uname -r)
(...)

$ python3 -c 'import perf; [print(c) for c in perf.cpu_map()]'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'perf'

Updating to kernel in noble-proposed and rebooting:
$ uname -a
Linux n-perf 6.8.0-32-generic #32-Ubuntu SMP PREEMPT_DYNAMIC Wed May 1 15:30:59 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

linux-tools was also updated:
$ dpkg -l linux-tools-$(uname -r)
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-============================-============-============-========================================================
ii linux-tools-6.8.0-32-generic 6.8.0-32.32 amd64 Linux kernel version specific tools for version 6.8.0-32

The python command now works:
$ python3 -c 'import perf; [print(c) for c in perf.cpu_map()]'
0

Another verification also shows the module is now available:

$ python3 -c 'import perf; print(perf.__file__)'
/usr/lib/python3/dist-packages/linux-tools-6.8.0-32/perf.cpython-312-x86_64-linux-gnu.so

Noble verification succeeded.