Merge tag 'pm-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
"These revert an x86 commit that introduced a nast

Merge tag 'pm-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
"These revert an x86 commit that introduced a nasty power regression on
some systems, fix PSCI cpuidle driver and ACPI cpufreq driver
regressions, add Rust abstractions for cpufreq, OPP, clk, and
cpumasks, add a Rust-based cpufreq-dt driver, and do a minor SCMI
cpufreq driver cleanup:

- Revert an x86 commit that went into 6.15 and caused idle power,
including power in suspend-to-idle, to rise rather dramatically on
systems booting with "nosmt" in the kernel command line (Rafael
Wysocki)

- Prevent freeing an uninitialized pointer in error path of
dt_idle_state_present() in the PSCI cpuidle driver (Dan Carpenter)

- Use KHz as the nominal_freq units in get_max_boost_ratio() in the
ACPI cpufreq driver (iGautham Shenoy)

- Add Rust abstractions for CPUFreq framework (Viresh Kumar)

- Add Rust abstractions for OPP framework (Viresh Kumar)

- Add basic Rust abstractions for Clk and Cpumask frameworks (Viresh
Kumar)

- Clean up the SCMI cpufreq driver somewhat (Mike Tipton)"

* tag 'pm-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (21 commits)
Revert "x86/smp: Eliminate mwait_play_dead_cpuid_hint()"
acpi-cpufreq: Fix nominal_freq units to KHz in get_max_boost_ratio()
rust: opp: Move `cfg(CONFIG_OF)` attribute to the top of doc test
cpuidle: psci: Fix uninitialized variable in dt_idle_state_present()
rust: opp: Make the doctest example depend on CONFIG_OF
cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs
cpufreq: Add Rust-based cpufreq-dt driver
rust: opp: Extend OPP abstractions with cpufreq support
rust: cpufreq: Extend abstractions for driver registration
rust: cpufreq: Extend abstractions for policy and driver ops
rust: cpufreq: Add initial abstractions for cpufreq framework
rust: opp: Add abstractions for the configuration options
rust: opp: Add abstractions for the OPP table
rust: opp: Add initial abstractions for OPP framework
rust: cpu: Add from_cpu()
rust: macros: enable use of hyphens in module names
rust: clk: Add initial abstractions
rust: clk: Add helpers for Rust code
MAINTAINERS: Add entry for Rust cpumask API
rust: cpumask: Add initial abstractions
...

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Merge branch 'pm-cpufreq'

Merge Rust support for cpufreq and OPP, a new Rust-based cpufreq-dt
driver, an SCMI cpufreq driver cleanup, and an ACPI cpufreq driver
regression fix:

- Add Rust abstract

Merge branch 'pm-cpufreq'

Merge Rust support for cpufreq and OPP, a new Rust-based cpufreq-dt
driver, an SCMI cpufreq driver cleanup, and an ACPI cpufreq driver
regression fix:

- Add Rust abstractions for CPUFreq framework (Viresh Kumar).

- Add Rust abstractions for OPP framework (Viresh Kumar).

- Add basic Rust abstractions for Clk and Cpumask frameworks (Viresh
Kumar).

- Clean up the SCMI cpufreq driver somewhat (Mike Tipton).

- Use KHz as the nominal_freq units in get_max_boost_ratio() in the
ACPI cpufreq driver (iGautham Shenoy).

* pm-cpufreq:
acpi-cpufreq: Fix nominal_freq units to KHz in get_max_boost_ratio()
rust: opp: Move `cfg(CONFIG_OF)` attribute to the top of doc test
rust: opp: Make the doctest example depend on CONFIG_OF
cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs
cpufreq: Add Rust-based cpufreq-dt driver
rust: opp: Extend OPP abstractions with cpufreq support
rust: cpufreq: Extend abstractions for driver registration
rust: cpufreq: Extend abstractions for policy and driver ops
rust: cpufreq: Add initial abstractions for cpufreq framework
rust: opp: Add abstractions for the configuration options
rust: opp: Add abstractions for the OPP table
rust: opp: Add initial abstractions for OPP framework
rust: cpu: Add from_cpu()
rust: macros: enable use of hyphens in module names
rust: clk: Add initial abstractions
rust: clk: Add helpers for Rust code
MAINTAINERS: Add entry for Rust cpumask API
rust: cpumask: Add initial abstractions
rust: cpumask: Add few more helpers

show more ...

rust: opp: Move `cfg(CONFIG_OF)` attribute to the top of doc test

Move the `#[cfg(CONFIG_OF)]` attribute to the top of the documentation test
block and hide it. This applies the condition to the ent

rust: opp: Move `cfg(CONFIG_OF)` attribute to the top of doc test

Move the `#[cfg(CONFIG_OF)]` attribute to the top of the documentation test
block and hide it. This applies the condition to the entire test and improves
readability.

Placing configuration flags like `CONFIG_OF` at the top serves as a clear
indicator of the conditions under which the example is valid, effectively
acting like configuration metadata for the example itself.

Suggested-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/9d93c783cc4419f16dd8942a4359d74bc0149203.1748323971.git.viresh.kumar@linaro.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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rust: opp: Make the doctest example depend on CONFIG_OF

The doctest example uses a function only available for CONFIG_OF and so
the build with doc tests fails when it isn't enabled.

error[E0599]:

rust: opp: Make the doctest example depend on CONFIG_OF

The doctest example uses a function only available for CONFIG_OF and so
the build with doc tests fails when it isn't enabled.

error[E0599]: no function or associated item named `from_of_cpumask`
found for struct `rust_doctest_kernel_alloc_kbox_rs_4::kernel::opp::Table`
in the current scope

Fix this by making the doctest depend on CONFIG_OF.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505260856.ZQWHW2xT-lkp@intel.com/
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/a80bfedcb4d94531dc27d3b48062db5042078e88.1748237646.git.viresh.kumar@linaro.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

show more ...

Merge tag 'cpufreq-arm-updates-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Merge ARM CPUFreq updates for 6.16 from Viresh Kumar:

"- Rust abstractions for CPUFreq framework (Vi

Merge tag 'cpufreq-arm-updates-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Merge ARM CPUFreq updates for 6.16 from Viresh Kumar:

"- Rust abstractions for CPUFreq framework (Viresh Kumar).

- Rust abstractions for OPP framework (Viresh Kumar).

- Basic Rust abstractions for Clk and Cpumask frameworks (Viresh Kumar).

- Minor cleanup to the SCMI cpufreq driver (Mike Tipton)."

* tag 'cpufreq-arm-updates-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: (24 commits)
cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs
cpufreq: Add Rust-based cpufreq-dt driver
rust: opp: Extend OPP abstractions with cpufreq support
rust: cpufreq: Extend abstractions for driver registration
rust: cpufreq: Extend abstractions for policy and driver ops
rust: cpufreq: Add initial abstractions for cpufreq framework
rust: opp: Add abstractions for the configuration options
rust: opp: Add abstractions for the OPP table
rust: opp: Add initial abstractions for OPP framework
rust: cpu: Add from_cpu()
rust: macros: enable use of hyphens in module names
rust: clk: Add initial abstractions
rust: clk: Add helpers for Rust code
MAINTAINERS: Add entry for Rust cpumask API
rust: cpumask: Add initial abstractions
rust: cpumask: Add few more helpers
rust: devres: require a bound device
rust: pci: move iomap_region() to impl Device<Bound>
rust: device: implement Bound device context
rust: pci: preserve device context in AsRef
...

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Merge branch 'rust/cpufreq-dt' into cpufreq/arm/linux-next

rust: opp: Extend OPP abstractions with cpufreq support

Extend the OPP abstractions to include support for interacting with the
cpufreq core, including the ability to retrieve frequency tables from

rust: opp: Extend OPP abstractions with cpufreq support

Extend the OPP abstractions to include support for interacting with the
cpufreq core, including the ability to retrieve frequency tables from
OPP table.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

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rust: opp: Add abstractions for the configuration options

Introduce Rust abstractions for the OPP core configuration options,
enabling safe access to various configurable aspects of the OPP
framewor

rust: opp: Add abstractions for the configuration options

Introduce Rust abstractions for the OPP core configuration options,
enabling safe access to various configurable aspects of the OPP
framework.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

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rust: opp: Add abstractions for the OPP table

Introduce Rust abstractions for `struct opp_table`, enabling access to
OPP tables from Rust.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

rust: opp: Add initial abstractions for OPP framework

Introduce initial Rust abstractions for the Operating Performance Points
(OPP) framework. This includes bindings for `struct dev_pm_opp` and
`st

rust: opp: Add initial abstractions for OPP framework

Introduce initial Rust abstractions for the Operating Performance Points
(OPP) framework. This includes bindings for `struct dev_pm_opp` and
`struct dev_pm_opp_data`, laying the groundwork for further OPP
integration.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

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