Re: [PATCH V12 00/15] Rust abstractions for clk, cpumask, cpufreq, OPP

[Andreas Hindborg <a.hindborg@kernel.org>]

Hi Viresh,

"Viresh Kumar" <viresh.kumar@linaro.org> writes:

> Hello,
>
> I have queued this up for v6.16-rc1, will merge it via the PM tree soon.
> Thanks.
>
> This series introduces initial Rust abstractions for a few subsystems: clk,
> cpumask, cpufreq and Operating Performance Points (OPP).
>
> The abstractions cover most of the interfaces exposed by cpufreq and OPP
> subsystems. It also includes minimal abstractions for the clk and cpumask
> frameworks, which are required by the cpufreq / OPP abstractions.
>
> Additionally, a sample `rcpufreq-dt` driver is included. This is a
> duplicate of the existing `cpufreq-dt` driver, which is a
> platform-agnostic, device-tree based cpufreq driver commonly used on ARM
> platforms.
>
> The implementation has been tested using QEMU, ensuring that frequency
> transitions, various configurations, and driver binding/unbinding work as
> expected. However, performance measurements have not been conducted yet.
>
> For those interested in testing these patches, they can be found at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git rust/cpufreq-dt
>
> Based on 6.15-rc1 + rust/devres dependencies + PM/cpufreq dependencies.

I was testing an unrelated patch and found this kunit failure in
mainline today:

[19:45:34] # rust_doctest_kernel_cpumask_rs_0.location: rust/kernel/cpumask.rs:180
[19:45:34] # rust_doctest_kernel_cpumask_rs_0: ASSERTION FAILED at rust/kernel/cpumask.rs:190

This is for arm64 defconfig. The test seems to passes on x86_64.


Best regards,
Andreas Hindborg