perf vendor events s390: Add new deflate counters for IBM z15

Bug #1888551 reported by Sultan Alsawaf
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu on IBM z Systems
Fix Released
Undecided
Unassigned
linux (Ubuntu)
Fix Released
Undecided
Unassigned
Focal
Fix Released
Undecided
Unassigned
Groovy
Fix Released
Undecided
Unassigned

Bug Description

SRU Justification:
==================

[Impact]

* With perf from Ubuntu 20.04 on IBM z15 hardware, some counters reported with lscpumf are not usable with 'perf stat -e'.

* 'lscpumf -c' provides a list of available counters, but the following are not usable: DFLT_ACCESS, DFLT_CYCLES, DFLT_CC, DFLT_CCERROR

* 'perf list' is also not offering these counters.

* On the kernel side this is fixed with the following upstream accepted commit:

[Fix]

* e7950166e40271c025e0eec348cdf5c63ac734fa "perf vendor events s390: Add new deflate counters for IBM z15"

[Test Case]

* Requires the fix/patch of the kernel (d68d5d51dc898895b4e15bea52e5668ca9e76180 "s390/cpum_cf: Add new extended counters for IBM z15")

* An IBM z15 (or LinuxONE III) system with Ubuntu 20.04 installed in LPAR is needed where the counters are enabled in the activation profile.

* Use 'perf list' to determine if the counters DFLT_ACCESS, DFLT_CYCLES, DFLT_CC, DFLT_CCERROR are listed

* Use 'perf stat -e' to enable amd make use of these counters.

[Regression Potential]

* The regression can be considered as low, since:

* it's architecture specific (s390x)

* limited to IBM z15 hardware

* and only additional (s390x) hardware counters are defined and added.

[Other]

* Since these patches are upstream in kernel 5.7 they will automatically land in groovy.

Changed in linux (Ubuntu):
status: New → In Progress
Changed in linux (Ubuntu Focal):
status: New → In Progress
Frank Heimes (fheimes)
Changed in ubuntu-z-systems:
status: New → In Progress
Changed in linux (Ubuntu Focal):
status: In Progress → Fix Committed
Frank Heimes (fheimes)
Changed in ubuntu-z-systems:
status: In Progress → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-focal
Revision history for this message
Frank Heimes (fheimes) wrote :

Kernel 5.8 migrated in between from groovy proposed to main, hence updating the groovy part to Fix Released.

Changed in linux (Ubuntu Groovy):
status: In Progress → Fix Released
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (97.9 KiB)

This bug was fixed in the package linux - 5.4.0-45.49

---------------
linux (5.4.0-45.49) focal; urgency=medium

  * focal/linux: 5.4.0-45.49 -proposed tracker (LP: #1893050)

  * [Potential Regression] dscr_inherit_exec_test from powerpc in
    ubuntu_kernel_selftests failed on B/E/F (LP: #1888332)
    - powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()

linux (5.4.0-44.48) focal; urgency=medium

  * focal/linux: 5.4.0-44.48 -proposed tracker (LP: #1891049)

  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts

  * ipsec: policy priority management is broken (LP: #1890796)
    - xfrm: policy: match with both mark and mask on user interfaces

linux (5.4.0-43.47) focal; urgency=medium

  * focal/linux: 5.4.0-43.47 -proposed tracker (LP: #1890746)

  * Packaging resync (LP: #1786013)
    - update dkms package versions

  * Devlink - add RoCE disable kernel support (LP: #1877270)
    - devlink: Add new "enable_roce" generic device param
    - net/mlx5: Document flow_steering_mode devlink param
    - net/mlx5: Handle "enable_roce" devlink param
    - IB/mlx5: Rename profile and init methods
    - IB/mlx5: Load profile according to RoCE enablement state
    - net/mlx5: Remove unneeded variable in mlx5_unload_one
    - net/mlx5: Add devlink reload
    - IB/mlx5: Do reverse sequence during device removal

  * msg_zerocopy.sh in net from ubuntu_kernel_selftests failed (LP: #1812620)
    - selftests/net: relax cpu affinity requirement in msg_zerocopy test

  * Enlarge hisi_sec2 capability (LP: #1890222)
    - Revert "UBUNTU: [Config] Disable hisi_sec2 temporarily"
    - crypto: hisilicon - update SEC driver module parameter

  * Fix missing HDMI/DP Audio on an HP Desktop (LP: #1890441)
    - ALSA: hda/hdmi: Add quirk to force connectivity

  * Fix IOMMU error on AMD Radeon Pro W5700 (LP: #1890306)
    - PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken

  * ASoC:amd:renoir: the dmic can't record sound after suspend and resume
    (LP: #1890220)
    - SAUCE: ASoC: amd: renoir: restore two more registers during resume

  * No sound, Dummy output on Acer Swift 3 SF314-57G with Ice Lake core-i7 CPU
    (LP: #1877757)
    - ASoC: SOF: Intel: hda: fix generic hda codec support

  * Fix right speaker of HP laptop (LP: #1889375)
    - SAUCE: hda/realtek: Fix right speaker of HP laptop

  * blk_update_request error when mount nvme partition (LP: #1872383)
    - SAUCE: nvme-pci: prevent SK hynix PC400 from using Write Zeroes command

  * soc/amd/renoir: detect dmic from acpi table (LP: #1887734)
    - ASoC: amd: add logic to check dmic hardware runtime
    - ASoC: amd: add ACPI dependency check
    - ASoC: amd: fixed kernel warnings

  * soc/amd/renoir: change the module name to make it work with ucm3
    (LP: #1888166)
    - AsoC: amd: add missing snd- module prefix to the acp3x-rn driver kernel
      module
    - SAUCE: remove a kernel module since its name is changed

  * Focal update: v5.4.55 upstream stable release (LP: #1890343)
    - AX.25: Fix out-of-bounds read in ax25_connect()
    - AX.25: Prevent out-of-bounds read in ax25_sendmsg()
    - dev: Defer free of skbs in flush_backlog
    - drivers/net/wan/x25_asy: Fix to make i...

Changed in linux (Ubuntu Focal):
status: Fix Committed → Fix Released
Frank Heimes (fheimes)
Changed in ubuntu-z-systems:
status: Fix Committed → Fix Released
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.