*** This bug is a duplicate of bug 2103415 ***
https://bugs.launchpad.net/bugs/2103415
------- Comment From [email protected] 2025-09-03 05:31 EDT-------
Copied from bz 211786 comment 14.
I looked at this repo:
url = https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy
$ git log|head -8
commit 0ee81da15edce5acd1f1d3f6df05c25563ea165b
Author: Mehmet Basaran <[email protected]>
Date: Sat Aug 9 02:40:31 2025 +0300
UBUNTU: Ubuntu-5.15.0-156.166
Signed-off-by: Mehmet Basaran <[email protected]>
$ git branch
master
master-next
* master-prep
z17-toleration
I hope that is a pretty recent one.
You are correct, the directory:
$ ll tools/perf/pmu-events/arch/s390/
total 28
drwxrwxr-x 2 tmricht tmricht 4096 Aug 23 2023 cf_z10/
drwxrwxr-x 2 tmricht tmricht 4096 Aug 23 2023 cf_z13/
drwxrwxr-x 2 tmricht tmricht 4096 Aug 23 2023 cf_z14/
drwxrwxr-x 2 tmricht tmricht 4096 Aug 23 2023 cf_z15/
drwxrwxr-x 2 tmricht tmricht 4096 Aug 23 2023 cf_z196/
drwxrwxr-x 2 tmricht tmricht 4096 Aug 23 2023 cf_zec12/
-rw-rw-r-- 1 tmricht tmricht 366 Aug 23 2023 mapfile.csv
$
does not contain the perf json files for z16.
Interesting is the kernel supports z16, the file
arch/s390/kernel/perf_cpum_cf_events.c supports all z16 counter sets.
It just missing in the perf tool.
To update Ubuntu 22.04 (jammy) perf-tool to the latest s390 counter set
definition for machines z13 to z17 apply the following patches
in that sequence (it worked for me):
7f76b31130680 perf list: Add IBM z16 event description for s390
74395567a3011 perf vendor events s390: Add common metrics
1158a21357abe perf vendor events s390: Add cache metrics for z13
90a22bc2e01ee perf vendor events s390: Add cache metrics for z14
48346c0fe5187 perf vendor events s390: Add cache metrics for z15
f8a6cea4839bc perf vendor events s390: Add cache metrics for z16
cac6f9bc0d958 perf vendor events s390: Add metric for TLB and cache
34e0ce568b3c0 perf stat: Do not fail on metrics on s390 z/VM systems
9cba16715a528 perf report: Fix PAI counter names for s390 virtual machines
55e25b2aad7a5 perf list: Add IBM z17 event descriptions
The second last patch 9cba16715a528 has a somehow misleading title as
Jammy does not support PAI counters at all, but all this patch does
is changing the machine detection statement in
tools/perf/pmu-events/arch/s390/mapfile.
Hope this helps and let me know if you run into issue.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2121809
Title:
[UBUNTU 22.04] Support CPU-MF Counters for new IBM z17 - perf part
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2121809/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
