linux-kernel - Re: [tip:locking/core 1/13] error[E0425]: cannot find function `atomic

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Message-ID: <20250915073245.GQ3419281@noisy.programming.kicks-ass.net>
Date: Mon, 15 Sep 2025 09:32:45 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: kernel test robot <lkp@...el.com>
Cc: Boqun Feng <boqun.feng@...il.com>, llvm@...ts.linux.dev,
	oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	x86@...nel.org, Alice Ryhl <aliceryhl@...gle.com>,
	Benno Lossin <lossin@...nel.org>,
	Elle Rhumsaa <elle@...thered-steel.dev>
Subject: Re: [tip:locking/core 1/13] error[E0425]: cannot find function
 `atomic_add` in crate `bindings`

On Sun, Sep 14, 2025 at 02:10:26PM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
> head:   502ae97746ab6d7b7b48d54b6a85a11815f390d0
> commit: eb57133305f61b612252382d0c1478bba7f57b67 [1/13] rust: sync: Add basic atomic operation mapping framework
> config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250914/202509141437.5iiM1sOF-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250914/202509141437.5iiM1sOF-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202509141437.5iiM1sOF-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> error[E0425]: cannot find function `atomic_read_acquire` in crate `bindings`
>    --> rust/kernel/sync/atomic/internal.rs:124:37
>    |
>    124 |                   $unsafe { bindings::[< $ctype _ $func >]($($c_arg,)*) }
>    |                                       ^^^^^^^^^^^^^^^^^^^^ not found in `bindings`
>    ...
>    201 | / declare_and_impl_atomic_methods!(
>    202 | |     /// Basic atomic operations
>    203 | |     pub trait AtomicBasicOps {
>    204 | |         /// Atomic read (load).
>    ...   |
>    216 | | );
>    | |_- in this macro invocation
>    |
>    = note: this error originates in the macro `impl_atomic_method` which comes from the expansion of the macro `declare_and_impl_atomic_methods` (in Nightly builds, run with -Z macro-backtrace for more info)


Boqun, did I mess things up? I can rebase this tree, but I've no real
clue with this rust stuff.