cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids

[[e-mail]]

[SRU Justification]

== Impact ==
See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release.

== Fix ==
This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change
which introduces the EPP tweak for Alderlake.

== Test case ==
<TBD one of the artificial workloads to compare before and after>

== Regression Potential ==
The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed.
For Jammy there is the additional risk of havind a different power usage
on Alderlake which is a Laptop CPU. However that change is part of v5.17
and thus would already be in effect with current 22.04 HWE.

== Original description ==

[Feature Description]
Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor.

Report is published: www.Phoronix.com showing difference of 37%

The goal here is to keep mean performance delta of powersave governor
from performance governor around 10% to 12% by running wide variety
of server workloads. For some bursty workload, this delta can be still
large, as ramp up of frequency will still lag with powersave governor
irrespective of EPP setting. The performance governor always requests
maximum frequency.

Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for
powersave governor is around 12%. But the EPP 0x20 has 18% lower average
power.

Also experiments are done by raising intel_pstate sysfs min_perf_pct as
high as 50%. This didn't bring in any additional improvements compared
to just changing EPP.

Target Kernel: 6.3
Target Release: 22.04 (5.15 kernel)

[HW/SW Information]
Sapphire Rapids

[Business Justification]
Performance Improvements

Upstream: Merged 6.3
Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2008519

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[[e-mail] (pragyan)]

Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/cpufreq/intel_pstate.c?h=next-20230303&id=60675225ebeecea248035fd3a0efc82ae9038a98

[Stefan Bader (smb)]

The requested change is now upstream (v6.3-rc1) as

commit 60675225ebeecea248035fd3a0efc82ae9038a98
Author: Srinivas Pandruvada <email address hidden>
Date: Tue Feb 21 22:45:26 2023 -0800

    cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids

[Stefan Bader (smb)]

@Pragyansri, if you could point out one of the test loads usable to check the difference we would have it documented here. Right now not sure whether we have access to a Sapphire Rapids directly. But best to have all details in one place.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 6.2.0-18.18

---------------
linux (6.2.0-18.18) lunar; urgency=medium

  * lunar/linux: 6.2.0-18.18 -proposed tracker (LP: #2011750)

  * lunar/linux 6.2 fails to boot on arm64 (LP: #2011748)
    - SAUCE: Revert "efi: random: fix NULL-deref when refreshing seed"
    - SAUCE: Revert "efi: random: refresh non-volatile random seed when RNG is
      initialized"

 -- Andrea Righi <email address hidden> Wed, 15 Mar 2023 23:54:18 +0100

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux/5.15.0-70.77 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-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux/5.19.0-40.41 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-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'.

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!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.15.0-70.77

---------------
linux (5.15.0-70.77) jammy; urgency=medium

  * jammy/linux: 5.15.0-70.77 -proposed tracker (LP: #2011918)

  * CVE-2023-26545
    - net: mpls: fix stale pointer if allocation fails during device rename

  * CVE-2023-1281
    - net/sched: tcindex: update imperfect hash filters respecting rcu

  * [SRU][Ubuntu 22.04.1] mpi3mr: Add management application interface(BSG)
    support (LP: #1971151)
    - scsi: mpi3mr: Add bsg device support
    - scsi: mpi3mr: Add support for driver commands
    - scsi: mpi3mr: Move data structures/definitions from MPI headers to uapi
      header
    - scsi: mpi3mr: Add support for MPT commands
    - scsi: mpi3mr: Add support for PEL commands
    - scsi: mpi3mr: Expose adapter state to sysfs
    - scsi: mpi3mr: Add support for NVMe passthrough
    - scsi: mpi3mr: Update driver version to 8.0.0.69.0
    - scsi: mpi3mr: Increase I/O timeout value to 60s
    - scsi: mpi3mr: Hidden drives not removed during soft reset
    - scsi: mpi3mr: Return I/Os to an unrecoverable HBA with DID_ERROR
    - scsi: mpi3mr: Fix a NULL vs IS_ERR() bug in mpi3mr_bsg_init()
    - scsi: mpi3mr: Return error if dma_alloc_coherent() fails
    - scsi: mpi3mr: Add shost related sysfs attributes
    - scsi: mpi3mr: Add target device related sysfs attributes
    - scsi: mpi3mr: Rework mrioc->bsg_device model to fix warnings
    - scsi: mpi3mr: Fix kernel-doc

  * cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
    (LP: #2008519)
    - cpufreq: intel_pstate: Update EPP for AlderLake mobile
    - cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids

  * Fail to output sound to external monitor which connects via docking station
    (LP: #2009024)
    - [Config] Enable CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM

  * Fix mediatek wifi driver crash when loading wrong SAR table (LP: #2009118)
    - wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read

  * Jammy update: v5.15.92 upstream stable release (LP: #2011472)
    - ARM: dts: imx: Fix pca9547 i2c-mux node name
    - ARM: dts: vf610: Fix pca9548 i2c-mux node names
    - arm64: dts: freescale: Fix pca954x i2c-mux node names
    - arm64: dts: imx8mq-thor96: fix no-mmc property for SDHCI
    - firmware: arm_scmi: Clear stale xfer->hdr.status
    - bpf: Skip task with pid=1 in send_signal_common()
    - erofs/zmap.c: Fix incorrect offset calculation
    - blk-cgroup: fix missing pd_online_fn() while activating policy
    - HID: playstation: sanity check DualSense calibration data.
    - dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init
    - cifs: fix return of uninitialized rc in dfs_cache_update_tgthint()
    - extcon: usbc-tusb320: fix kernel-doc warning
    - Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt
    - tools: fix ARRAY_SIZE defines in tools and selftests hdrs
    - selftests/vm: remove ARRAY_SIZE define from individual tests
    - selftests: Provide local define of __cpuid_count()
    - net: fix NULL pointer in skb_segment_list
    - net: mctp: purge receive queues on sk destruction
    - Linux 5.15.92

  * Jammy update: v5.15....

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.19.0-40.41

---------------
linux (5.19.0-40.41) kinetic; urgency=medium

  * kinetic/linux: 5.19.0-40.41 -proposed tracker (LP: #2012668)

  * CVE-2023-0468
    - io_uring: fix tw losing poll events
    - io_uring: make poll refs more robust

  * Regression in ext4 during online resize (LP: #2003816)
    - ext4: fix bad checksum after online resize
    - ext4: fix corruption when online resizing a 1K bigalloc fs
    - ext4: fix corrupt backup group descriptors after online resize

linux (5.19.0-39.40) kinetic; urgency=medium

  * kinetic/linux: 5.19.0-39.40 -proposed tracker (LP: #2011876)

  * CVE-2023-26545
    - net: mpls: fix stale pointer if allocation fails during device rename

  * CVE-2023-1032
    - net: avoid double iput when sock_alloc_file fails

  * CVE-2022-41218 // CVE-2022-41218 is assigned to those bugs above.
    - media: dvb-core: Fix UAF due to refcount races at releasing

  * CVE-2023-1281
    - net/sched: tcindex: update imperfect hash filters respecting rcu

  * linux: CONFIG_SERIAL_8250_MID=y (LP: #2009283)
    - [Config] enable CONFIG_SERIAL_8250_MID=y

  * apply the latest TDX attestation driver from Intel (LP: #2009437)
    - Revert "UBUNTU: SAUCE: selftests: tdx: Test GetReport TDX attestation
      feature"
    - Revert "UBUNTU: SAUCE: x86/tdx: Add TDX Guest attestation interface driver"
    - x86/tdx: Add a wrapper to get TDREPORT0 from the TDX Module
    - virt: Add TDX guest driver
    - selftests/tdx: Test TDX attestation GetReport support
    - [Config] enable TDX attestation driver as module by default

  * cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
    (LP: #2008519)
    - cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids

  * Fail to output sound to external monitor which connects via docking station
    (LP: #2009024)
    - [Config] Enable CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM

  * Fix mediatek wifi driver crash when loading wrong SAR table (LP: #2009118)
    - wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read

  * CVE-2022-47929
    - net: sched: disallow noqueue for qdisc classes

  * Intel graphic driver is not probing[8086:468b] (LP: #1990242)
    - drm/i915: Add new ADL-S pci id

  * Some QHD panels fail to refresh when PSR2 enabled (LP: #2009014)
    - drm/i915/psr: Use full update In case of area calculation fails
    - drm/i915: Ensure damage clip area is within pipe area
    - SAUCE: drm/i915/psr: Use calculated io and fast wake lines

  * overlayfs mounts as R/O over idmapped mount (LP: #2009065)
    - SAUCE: overlayfs: handle idmapped mounts in ovl_do_(set|remove)xattr

  * Kinetic update: upstream stable patchset 2023-02-28 (LP: #2008832)
    - usb: musb: remove extra check in musb_gadget_vbus_draw
    - arm64: dts: qcom: ipq6018-cp01-c1: use BLSPI1 pins
    - arm64: dts: qcom: sm8250-sony-xperia-edo: fix touchscreen bias-disable
    - arm64: dts: qcom: msm8996: Add MSM8996 Pro support
    - arm64: dts: qcom: msm8996: fix supported-hw in cpufreq OPP tables
    - arm64: dts: qcom: msm8996: fix GPU OPP table
    - ARM: dts: qcom: apq8064: fix coresight compatible
    - arm64: dts:...

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-hwe-5.15/5.15.0-71.78~20.04.1 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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-ibm/5.19.0-1021.23 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-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws/5.19.0-1025.26 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-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-azure/5.19.0-1026.29 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-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws/5.15.0-1036.40 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-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-azure/5.15.0-1038.45 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-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-nvidia-5.19/5.19.0-1010.10 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-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-intel-iotg-5.15/5.15.0-1029.34~20.04.1 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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-xilinx-zynqmp/5.15.0-1021.25 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-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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!

[Jian Hui Lee (jianhuilee)]

since intel-iotg kernel does not use Sapphire Rapids, so mark it as done.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws-5.15/5.15.0-1046.51~20.04.1 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-linux-aws-5.15' to 'verification-done-focal-linux-aws-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-aws-5.15' to 'verification-failed-focal-linux-aws-5.15'.

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!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-mtk/5.15.0-1030.34 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-jammy-linux-mtk' to 'verification-done-jammy-linux-mtk'. If the problem still exists, change the tag 'verification-needed-jammy-linux-mtk' to 'verification-failed-jammy-linux-mtk'.

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!