[PATCH v2 3/7] rust: doctest: add LocalModule fallback for #[vtable] ThisModule
From: Alvin Sun <hidden>
Date: 2026-05-21 07:52:57
Also in:
b4-sent, dri-devel, driver-core, linux-block, linux-kselftest, nova-gpu, rust-for-linux
Subsystem:
kernel unit testing framework (kunit), rust, the rest · Maintainers:
Brendan Higgins, David Gow, Miguel Ojeda, Linus Torvalds
Add a `LocalModule` struct with a null-pointer `ModuleMetadata` impl in the doctest harness, so that `crate::LocalModule` (auto-inserted by `#[vtable]`) resolves correctly when there is no `module!` macro. Signed-off-by: Alvin Sun <redacted> --- scripts/rustdoc_test_gen.rs | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/scripts/rustdoc_test_gen.rs b/scripts/rustdoc_test_gen.rs
index ee76e96b41eea..198af4e446c8c 100644
--- a/scripts/rustdoc_test_gen.rs
+++ b/scripts/rustdoc_test_gen.rs@@ -239,6 +239,22 @@ macro_rules! assert_eq {{ const __LOG_PREFIX: &[u8] = b"rust_doctests_kernel\0"; +/// Dummy module type for doctest context. +struct LocalModule; + +use kernel::{{ + str::CStr, + ModuleMetadata, + ThisModule, // +}}; +use core::ptr::null_mut; + +impl ModuleMetadata for LocalModule {{ + const NAME: &'static CStr = c"rust_doctests_kernel"; + // SAFETY: `try_module_get`/`module_put` handle null module pointers gracefully. + const THIS_MODULE: ThisModule = unsafe {{ ThisModule::from_ptr(null_mut()) }}; +}} + {rust_tests} "# )
--
2.43.0