linux-kernel - Re: [PATCH V11 00/15] Rust abstractions for clk, cpumask, cpufreq, OPP

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Message-ID: <20250506101311.142475-1-andrewjballance@gmail.com>
Date: Tue,  6 May 2025 05:13:11 -0500
From: Andrew Ballance <andrewjballance@...il.com>
To: viresh.kumar@...aro.org
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Subject: Re: [PATCH V11 00/15] Rust abstractions for clk, cpumask, cpufreq, OPP

On Fri, May 02, 2025 at 12:31:09PM +0530, Viresh Kumar wrote:
> Applied to the cpufreq tree few days back and is now included in
> linux-next:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/log/?h=cpufreq/arm/linux-next
> 
> Will send it for v6.16-rc1 (unless there are any objections).
> 
> -- 
> viresh

Hi,

I have tried building the latest linux-next and I think that this
patch series causes a build error with the defconfig for x86_64.

commit: 407f60a151df3c44397e5afc0111eb9b026c38d3

steps to reproduce:
    make LLVM=1 defconfig
    make LLVM=1 rust.config
    make LLVM=1

build error message:
    error[E0432]: unresolved import `crate::clk`
      --> rust/kernel/cpufreq.rs:12:5
       |
    12 |     clk::{Clk, Hertz},
       |     ^^^ could not find `clk` in the crate root
       |
    note: found an item that was configured out
      --> rust/kernel/lib.rs:48:9
       |
    48 | pub mod clk;
       |         ^^^
    note: the item is gated here
      --> rust/kernel/lib.rs:47:1
       |
    47 | #[cfg(CONFIG_COMMON_CLK)]
       | ^^^^^^^^^^^^^^^^^^^^^^^^^

    error: aborting due to 1 previous error

it looks like this occurs when CONFIG_COMMON_CLK=n and CONFIG_CPU_FREQ=y.

Best regards,
Andrew Ballance