Successfully identified regression in *linux* in CI configuration 
tcwg_kernel/gnu-release-arm-next-allmodconfig.  So far, this commit has 
regressed CI configurations:
 - tcwg_kernel/gnu-release-arm-next-allmodconfig

Culprit:
<cut>
commit 4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4
Merge: 907f2745370d 6f65d2319f21
Author: Stephen Rothwell <s...@canb.auug.org.au>
Date:   Tue Sep 7 10:00:35 2021 +1000

    Merge remote-tracking branch 'pm/linux-next'
</cut>

Results regressed to (for first_bad == 4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1:
-5
# build_abe qemu:
-2
# linux_n_obj:
21778
# First few build errors in logs:

from (for last_good == 907f2745370d3cfcc6efe7772def37c4eee4b960)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1:
-5
# build_abe qemu:
-2
# linux_n_obj:
29889
# linux build successful:
all

Artifacts of last_good build: 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/artifact/artifacts/build-907f2745370d3cfcc6efe7772def37c4eee4b960/
Artifacts of first_bad build: 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/artifact/artifacts/build-4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4/
Build top page/logs: 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/

Configuration details:
rr[linux_git]="https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git#4b93c544e90e2b28326182d31ee008eb80e02074";

Reproduce builds:
<cut>
mkdir investigate-linux-4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4
cd investigate-linux-4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4

git clone https://git.linaro.org/toolchain/jenkins-scripts

mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/artifact/artifacts/manifests/build-baseline.sh
 --fail
curl -o artifacts/manifests/build-parameters.sh 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/artifact/artifacts/manifests/build-parameters.sh
 --fail
curl -o artifacts/test.sh 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/artifact/artifacts/test.sh
 --fail
chmod +x artifacts/test.sh

# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_kernel-build.sh @@ artifacts/manifests/build-baseline.sh

# Save baseline build state (which is then restored in artifacts/test.sh)
mkdir -p ./bisect
rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ 
--exclude /linux/ ./ ./bisect/baseline/

cd linux

# Reproduce first_bad build
git checkout --detach 4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4
../artifacts/test.sh

# Reproduce last_good build
git checkout --detach 907f2745370d3cfcc6efe7772def37c4eee4b960
../artifacts/test.sh

cd ..
</cut>

History of pending regressions and results: 
https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/ci/tcwg_kernel/gnu-release-arm-next-allmodconfig

Artifacts: 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/artifact/artifacts/
Build log: 
https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-release-arm-next-allmodconfig/20/consoleText

Full commit (up to 1000 lines):
<cut>
commit 4d3b252a0a3aed2f6fc70aec3c37275a9ca179a4
Merge: 907f2745370d 6f65d2319f21
Author: Stephen Rothwell <s...@canb.auug.org.au>
Date:   Tue Sep 7 10:00:35 2021 +1000

    Merge remote-tracking branch 'pm/linux-next'

 Documentation/admin-guide/acpi/ssdt-overlays.rst   |  49 +-
 Documentation/cpu-freq/cpu-drivers.rst             |   3 -
 .../devicetree/bindings/cpufreq/cpufreq-dt.txt     |   2 +-
 .../bindings/cpufreq/cpufreq-mediatek.txt          |   2 +-
 .../devicetree/bindings/cpufreq/cpufreq-st.txt     |   6 +-
 .../bindings/cpufreq/nvidia,tegra20-cpufreq.txt    |   2 +-
 .../devicetree/bindings/devfreq/rk3399_dmc.txt     |   2 +-
 .../devicetree/bindings/gpu/arm,mali-bifrost.yaml  |   2 +-
 .../devicetree/bindings/gpu/arm,mali-midgard.yaml  |   2 +-
 .../bindings/interconnect/fsl,imx8m-noc.yaml       |   4 +-
 .../opp/allwinner,sun50i-h6-operating-points.yaml  |   4 +
 Documentation/devicetree/bindings/opp/opp-v1.yaml  |  51 ++
 .../devicetree/bindings/opp/opp-v2-base.yaml       | 214 +++++++
 Documentation/devicetree/bindings/opp/opp-v2.yaml  | 475 ++++++++++++++++
 Documentation/devicetree/bindings/opp/opp.txt      | 622 ---------------------
 Documentation/devicetree/bindings/opp/qcom-opp.txt |   2 +-
 .../bindings/opp/ti-omap5-opp-supply.txt           |   2 +-
 .../devicetree/bindings/power/power-domain.yaml    |   2 +-
 .../translations/zh_CN/cpu-freq/cpu-drivers.rst    |   2 -
 arch/arm/boot/dts/omap34xx.dtsi                    |   1 -
 arch/arm/boot/dts/omap36xx.dtsi                    |   1 -
 drivers/acpi/x86/s2idle.c                          |  67 ++-
 drivers/base/arch_topology.c                       |   2 +
 drivers/cpufreq/acpi-cpufreq.c                     |  14 +-
 drivers/cpufreq/cpufreq-dt-platdev.c               |   4 +
 drivers/cpufreq/cpufreq-dt.c                       |   3 +-
 drivers/cpufreq/cpufreq.c                          |  17 +-
 drivers/cpufreq/imx6q-cpufreq.c                    |   2 +-
 drivers/cpufreq/mediatek-cpufreq.c                 |   3 +-
 drivers/cpufreq/omap-cpufreq.c                     |   2 +-
 drivers/cpufreq/qcom-cpufreq-hw.c                  | 151 ++++-
 drivers/cpufreq/scmi-cpufreq.c                     |  65 ++-
 drivers/cpufreq/scpi-cpufreq.c                     |   3 +-
 drivers/cpufreq/sh-cpufreq.c                       |  11 -
 drivers/cpufreq/vexpress-spc-cpufreq.c             |  25 +-
 drivers/pci/controller/vmd.c                       |  55 ++
 drivers/pci/host-bridge.c                          |   1 +
 drivers/pci/pci-acpi.c                             |  74 +++
 include/linux/cpufreq.h                            |  17 +-
 include/linux/pci-acpi.h                           |   3 +
 40 files changed, 1190 insertions(+), 779 deletions(-)
</cut>
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