CML: perf enabling for core

[quanxian]

[SRU Justification]

[Impact]
There is no complete perf support for Comet Lake CPU. For Ice Lake, some
changes has been included in v5.3, but still misses CPU IDs.

[Fix]
perf support for Comet Lake is based on previous works for Ice Lake, so
changes for both have to be backported.

[Test Case]
On platforms with Comet Lake/Ice Lake CPUs, one should find new
cstate_pkg events c{8,9,10}-residency appear in output of `perf list`
for use.

[Regression Potential]
Low. This backports perf support for previously incompletedly supported
cpu models.

========== original bug description ==========

Description:

CML perf enabling for core

v5.4-rc3
1ffa6c04dae39776a3c222bdf88051e394386c01 9066288b2aab1804dc1eebec6ff88474363b89cb 9674b1cc0f94c34f76e58c102623a866836f269e

Target Kernel: 5.4
Target Release: 20.04

[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 1848978

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.

[You-Sheng Yang (vicamo)]

WIP: https://code.launchpad.net/~vicamo/+git/ubuntu-kernel/+ref/bug-1848978/perf-enabling-for-comet-ice-lake/oem-osp1-bionic
PPA: https://launchpad.net/~vicamo/+archive/ubuntu/ppa-1848978

[Kent Lin (kent-jclin)]

perf/x86/cstate: Add Comet Lake CPU support:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.4-rc7&id=1ffa6c04dae39776a3c222bdf88051e394386c01
perf/x86/msr: Add Comet Lake CPU support:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.4-rc7&id=9674b1cc0f94c34f76e58c102623a866836f269e
perf/x86/intel: Add Comet Lake CPU support:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.4-rc7&id=9066288b2aab1804dc1eebec6ff88474363b89cb

[You-Sheng Yang (vicamo)]

There are still something already committed to mainline but missed on the list. I have to include also IceLake support for CometLake backports to D/OEM-OSP1-B, but `perf list` doesn't give PC8-10 for IceLake platforms. However, by installing v5.4-generic kernel from https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/unstable, they're back.

[You-Sheng Yang (vicamo)]

Fixed that for two more patches for IceLake, but the resulting tree fails to enter deeper state than PC3.

[You-Sheng Yang (vicamo)]

This (cannot enter PC8,9,10 on Ice Lake) can still be reproduced on 5.3.0-24.26+lp1848978.3 in my PPA, but not in ubuntu unstable kernel 5.4.0-6.7. Perhaps still some other fixes should be included as well.

[You-Sheng Yang (vicamo)]

Sorry, that should be a false alarm. Verified built kernels for oem-osp1, disco and eoan in my ppa on an Ice Lake platform, PC10 residency is still valid. Will proceed to send SRU patches after verified on CML as well.

[You-Sheng Yang (vicamo)]

To read PC10 residency, one may want to install `powertop` from ppa:canonical-hwe-team/powertop[1], which contains the latest version 2.11+.

[1]: https://launchpad.net/~canonical-hwe-team/+archive/ubuntu/powertop

[You-Sheng Yang (vicamo)]

For Comet Lake to read PC10 residency, please use `perf` from linux-tools packages:

  $ perf stat -e cstate_pkg/c10-residency/ \
              -e cstate_pkg/c9-residency/ \
              -e cstate_pkg/c8-residency/
  (this will block until interrupted)

as `powertop` doesn't currently support CML, either.

[You-Sheng Yang (vicamo)]

Mark linux-4.15 bionic as WONFIX as the scope is limited to 5.0. Actually this depends on Ice Lake function, so it has to be 5.0+ as well.

[You-Sheng Yang (vicamo)]

D/OEM-OSP1-B: https://lists.ubuntu.com/archives/kernel-team/2019-November/105643.html
E: https://lists.ubuntu.com/archives/kernel-team/2019-November/105663.html

[You-Sheng Yang (vicamo)]

Mark linux/disco as WONTFIX per review comment.

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

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-eoan' to 'verification-done-eoan'. If the problem still exists, change the tag 'verification-needed-eoan' to 'verification-failed-eoan'.

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!

[You-Sheng Yang (vicamo)]

Verified 5.3.0-25.27/eoan-proposed

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.3.0-26.28

---------------
linux (5.3.0-26.28) eoan; urgency=medium

  * eoan/linux: 5.3.0-26.28 -proposed tracker (LP: #1856807)

  * nvidia-435 is in eoan, linux-restricted-modules only builds against 430,
    ubiquity gives me the self-signed modules experience instead of using the
    Canonical-signed modules (LP: #1856407)
    - Add nvidia-435 dkms build

linux (5.3.0-25.27) eoan; urgency=medium

  * eoan/linux: 5.3.0-25.27 -proposed tracker (LP: #1854762)

  * CVE-2019-14901
    - SAUCE: mwifiex: Fix heap overflow in mmwifiex_process_tdls_action_frame()

  * CVE-2019-14896 // CVE-2019-14897
    - SAUCE: libertas: Fix two buffer overflows at parsing bss descriptor

  * CVE-2019-14895
    - SAUCE: mwifiex: fix possible heap overflow in mwifiex_process_country_ie()

  * [CML] New device id's for CMP-H (LP: #1846335)
    - mmc: sdhci-pci: Add another Id for Intel CML
    - i2c: i801: Add support for Intel Comet Lake PCH-H
    - mtd: spi-nor: intel-spi: Add support for Intel Comet Lake-H SPI serial flash
    - mfd: intel-lpss: Add Intel Comet Lake PCH-H PCI IDs

  * i915: Display flickers (monitor loses signal briefly) during "flickerfree"
    boot, while showing the BIOS logo on a black background (LP: #1836858)
    - [Config] FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER=y

  * Please add patch fixing RK818 ID detection (LP: #1853192)
    - SAUCE: mfd: rk808: Fix RK818 ID template

  * Kernel build log filled with "/bin/bash: line 5: warning: command
    substitution: ignored null byte in input" (LP: #1853843)
    - [Debian] Fix warnings when checking for modules signatures

  * Lenovo dock MAC Address pass through doesn't work in Ubuntu (LP: #1827961)
    - r8152: Add macpassthru support for ThinkPad Thunderbolt 3 Dock Gen 2

  * Dell XPS 13 9350/9360 headphone audio hiss (LP: #1654448) // [XPS 13 9360,
    Realtek ALC3246, Black Headphone Out, Front] High noise floor (LP: #1845810)
    - ALSA: hda/realtek: Reduce the Headphone static noise on XPS 9350/9360

  * no HDMI video output since GDM greeter after linux-oem-osp1 version
    5.0.0-1026 (LP: #1852386)
    - drm/i915: Add new CNL PCH ID seen on a CML platform
    - SAUCE: drm/i915: Fix detection for a CMP-V PCH

  * [broadwell-rt286, playback] Since Linux 5.2rc2 audio playback no longer
    works on Dell Venue 11 Pro 7140 (LP: #1846539)
    - [Config] Drop snd-sof-intel-bdw build
    - SAUCE: ASoC: SOF: Intel: Broadwell: clarify mutual exclusion with legacy
      driver

  * [CML-S62] Need enable turbostat patch support for Comet lake- S 6+2
    (LP: #1847451)
    - SAUCE: tools/power turbostat: Add Cometlake support

  * External microphone can't work on some dell machines with the codec alc256
    or alc236 (LP: #1853791)
    - SAUCE: ALSA: hda/realtek - Move some alc256 pintbls to fallback table
    - SAUCE: ALSA: hda/realtek - Move some alc236 pintbls to fallback table

  * Memory leak in net/xfrm/xfrm_state.c - 8 pages per ipsec connection
    (LP: #1853197)
    - xfrm: Fix memleak on xfrm state destroy

  * CVE-2019-18660: patches for Ubuntu (LP: #1853142) // CVE-2019-18660
    - powerpc/64s: support nospectre_v2 cmdline option
    - powerp...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-osp1 - 5.0.0-1033.38

---------------
linux-oem-osp1 (5.0.0-1033.38) bionic; urgency=medium

  * bionic/linux-oem-osp1: 5.0.0-1033.38 -proposed tracker (LP: #1856522)

  * change kconfig of the soundwire bus driver from y to m (LP: #1855685)
    - [config]: SOUNDWIRE=m

  * alsa/sof: change to use hda hdmi codec driver to make hdmi audio on the
    docking station work (LP: #1855666)
    - ALSA: hda/hdmi - implement mst_no_extra_pcms flag
    - ASoC: hdac_hda: add support for HDMI/DP as a HDA codec
    - ASoC: Intel: skl-hda-dsp-generic: use snd-hda-codec-hdmi
    - ASoC: Intel: skl-hda-dsp-generic: fix include guard name
    - ASoC: SOF: Intel: add support for snd-hda-codec-hdmi
    - ASoC: SOF: enable sync_write in hdac_bus
    - [config]: SND_SOC_SOF_HDA_COMMON_HDMI_CODEC=y

  * Support DPCD aux brightness control (LP: #1856134)
    - SAUCE: drm/i915: Fix eDP DPCD aux max backlight calculations
    - SAUCE: drm/i915: Assume 100% brightness when not in DPCD control mode
    - SAUCE: drm/i915: Fix DPCD register order in intel_dp_aux_enable_backlight()
    - SAUCE: drm/i915: Check backlight type while doing eDP backlight
      initializaiton
    - SAUCE: drm/i915: Auto detect DPCD backlight support by default
    - SAUCE: drm/i915: Force DPCD backlight mode on X1 Extreme 2nd Gen 4K AMOLED
      panel
    - SAUCE: drm/i915: Force DPCD backlight mode on Dell Precision 4K sku

  * Make hotplugging docking station to Thunderbolt port more reliable
    (LP: #1853991)
    - PCI: PM: Avoid skipping bus-level PM on platforms without ACPI
    - PCI: Make pcie_downstream_port() available outside of access.c
    - PCI/PM: Add pcie_wait_for_link_delay()
    - PCI/PM: Add missing link delays required by the PCIe spec

  * X crashes if set to external monitor only and then remove HDMI cable during
    suspend (LP: #1856517)
    - SAUCE: drm/i915/icl: add missing GT workaround

  * Fix Realtek Bluetooth firmware download (LP: #1856079)
    - Bluetooth: btrtl: Fix an issue that failing to download the FW which size is
      over 32K bytes

  * Fix unusable USB hub on Dell TB16 after S3 (LP: #1855312)
    - SAUCE: USB: core: Make port power cycle a seperate helper function
    - SAUCE: USB: core: Attempt power cycle port when it's in eSS.Disabled state

  * alsa/hda/realtek: the line-out jack doens't work on a dell AIO
    (LP: #1855999)
    - SAUCE: ALSA: hda/realtek - Line-out jack doesn't work on a Dell AIO

 -- Timo Aaltonen <email address hidden> Mon, 16 Dec 2019 14:56:37 +0200

[You-Sheng Yang (vicamo)]

Already in v5.4 and above.