Re: [PATCH] usb: rust: mark Device and Interface methods as inline

On Tue Jun 16, 2026 at 11:36 PM BST, Nicolás Antinori wrote:
> When building the kernel using llvm-19.1.7-rust-1.85.1-x86_64, the
> following symbols are generated:
> 
> $ nm vmlinux | grep ' _R'.*usb.*Device | rustfilt
> ...
> ffffffff823f2490 T <kernel::usb::Device as kernel::sync::aref::AlwaysRefCounted>::dec_ref
> ffffffff823f2470 T <kernel::usb::Device as kernel::sync::aref::AlwaysRefCounted>::inc_ref
> ...
> 
> $ nm vmlinux | grep ' _R'.*usb.*Interface | rustfilt
> ffffffff823f2450 T <kernel::usb::Interface as kernel::sync::aref::AlwaysRefCounted>::dec_ref
> ffffffff823f2430 T <kernel::usb::Interface as kernel::sync::aref::AlwaysRefCounted>::inc_ref
> ...
> 
> However, these Rust symbols are trivial wrappers around the
> `usb_get_dev`, `usb_put_dev`, `usb_get_intf` and `usb_put_intf`
> functions. It doesn't make sense to go through a trivial wrapper
> for these functions.
> 
> Link: https://github.com/Rust-for-Linux/linux/issues/1145
> Suggested-by: Alice Ryhl <[email protected]>
> Signed-off-by: Nicolás Antinori <[email protected]>

Reviewed-by: Gary Guo <[email protected]>

> ---
>  rust/kernel/usb.rs | 4 ++++
>  1 file changed, 4 insertions(+)