linux-kernel - [PATCH v13 5/6] rust: samples: add a module parameter to the rust

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Message-Id: <20250612-module-params-v3-v13-5-bc219cd1a3f8@kernel.org>
Date: Thu, 12 Jun 2025 15:40:06 +0200
From: Andreas Hindborg <a.hindborg@...nel.org>
To: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Alice Ryhl <aliceryhl@...gle.com>, Masahiro Yamada <masahiroy@...nel.org>, 
 Nathan Chancellor <nathan@...nel.org>, Luis Chamberlain <mcgrof@...nel.org>, 
 Danilo Krummrich <dakr@...nel.org>, Benno Lossin <lossin@...nel.org>, 
 Benno Lossin <lossin@...nel.org>, Nicolas Schier <nicolas.schier@...ux.dev>
Cc: Trevor Gross <tmgross@...ch.edu>, 
 Adam Bratschi-Kaye <ark.email@...il.com>, rust-for-linux@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, 
 Petr Pavlu <petr.pavlu@...e.com>, Sami Tolvanen <samitolvanen@...gle.com>, 
 Daniel Gomez <da.gomez@...sung.com>, Simona Vetter <simona.vetter@...ll.ch>, 
 Greg KH <gregkh@...uxfoundation.org>, Fiona Behrens <me@...enk.dev>, 
 Daniel Almeida <daniel.almeida@...labora.com>, 
 linux-modules@...r.kernel.org, Andreas Hindborg <a.hindborg@...nel.org>
Subject: [PATCH v13 5/6] rust: samples: add a module parameter to the
 rust_minimal sample

Showcase the rust module parameter support by adding a module parameter to
the `rust_minimal` sample.

Signed-off-by: Andreas Hindborg <a.hindborg@...nel.org>
---
 samples/rust/rust_minimal.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/samples/rust/rust_minimal.rs b/samples/rust/rust_minimal.rs
index 1fc7a1be6b6d..c04cc07b3249 100644
--- a/samples/rust/rust_minimal.rs
+++ b/samples/rust/rust_minimal.rs
@@ -10,6 +10,12 @@
     authors: ["Rust for Linux Contributors"],
     description: "Rust minimal sample",
     license: "GPL",
+    params: {
+        test_parameter: i64 {
+            default: 1,
+            description: "This parameter has a default of 1",
+        },
+    },
 }
 
 struct RustMinimal {
@@ -20,6 +26,10 @@ impl kernel::Module for RustMinimal {
     fn init(_module: &'static ThisModule) -> Result<Self> {
         pr_info!("Rust minimal sample (init)\n");
         pr_info!("Am I built-in? {}\n", !cfg!(MODULE));
+        pr_info!(
+            "test_parameter: {}\n",
+            *module_parameters::test_parameter.get()
+        );
 
         let mut numbers = KVec::new();
         numbers.push(72, GFP_KERNEL)?;

-- 
2.47.2