samples: rust: fix `rust_print` build making it a combined module

The `rust_print` module, when built as a module, fails to build with:

    ERROR: modpost: missing MODULE_LICENSE() in samples/rust/rust_print_events.o
    ERROR: modpost: "__tracepoint_rust_sample_loaded" [samples/rust/rust_print.ko] undefined!
    ERROR: modpost: "rust_do_trace_rust_sample_loaded" [samples/rust/rust_print.ko] undefined!

Fix it by building it as a combined one.

Cc: Masami Hiramatsu <[email protected]>
Cc: Alex Gaynor <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Boqun Feng <[email protected]>
Cc: Gary Guo <[email protected]>
Cc: Björn Roy Baron <[email protected]>
Cc: Benno Lossin <[email protected]>
Cc: Andreas Hindborg <[email protected]>
Cc: Alice Ryhl <[email protected]>
Cc: Trevor Gross <[email protected]>
Cc: "Linux Next Mailing List" <[email protected]>
Link: https://lore.kernel.org/[email protected]
Reported-by: Stephen Rothwell <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Fixes: 91d39024e1b0 ("rust: samples: add tracepoint to Rust sample")
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>

1 files changed, 0 insertions, 98 deletions

diff --git a/samples/rust/rust_print.rs b/samples/rust/rust_print.rs
deleted file mode 100644
index 6d14b08cac1c..000000000000
--- a/samples/rust/rust_print.rs
+++ /dev/null
@@ -1,98 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-//! Rust printing macros sample.
-
-use kernel::pr_cont;
-use kernel::prelude::*;
-
-module! {
-    type: RustPrint,
-    name: "rust_print",
-    author: "Rust for Linux Contributors",
-    description: "Rust printing macros sample",
-    license: "GPL",
-}
-
-struct RustPrint;
-
-fn arc_print() -> Result {
-    use kernel::sync::*;
-
-    let a = Arc::new(1, GFP_KERNEL)?;
-    let b = UniqueArc::new("hello, world", GFP_KERNEL)?;
-
-    // Prints the value of data in `a`.
-    pr_info!("{}", a);
-
-    // Uses ":?" to print debug fmt of `b`.
-    pr_info!("{:?}", b);
-
-    let a: Arc<&str> = b.into();
-    let c = a.clone();
-
-    // Uses `dbg` to print, will move `c` (for temporary debugging purposes).
-    dbg!(c);
-
-    // Pretty-prints the debug formatting with lower-case hexadecimal integers.
-    pr_info!("{:#x?}", a);
-
-    Ok(())
-}
-
-impl kernel::Module for RustPrint {
-    fn init(_module: &'static ThisModule) -> Result<Self> {
-        pr_info!("Rust printing macros sample (init)\n");
-
-        pr_emerg!("Emergency message (level 0) without args\n");
-        pr_alert!("Alert message (level 1) without args\n");
-        pr_crit!("Critical message (level 2) without args\n");
-        pr_err!("Error message (level 3) without args\n");
-        pr_warn!("Warning message (level 4) without args\n");
-        pr_notice!("Notice message (level 5) without args\n");
-        pr_info!("Info message (level 6) without args\n");
-
-        pr_info!("A line that");
-        pr_cont!(" is continued");
-        pr_cont!(" without args\n");
-
-        pr_emerg!("{} message (level {}) with args\n", "Emergency", 0);
-        pr_alert!("{} message (level {}) with args\n", "Alert", 1);
-        pr_crit!("{} message (level {}) with args\n", "Critical", 2);
-        pr_err!("{} message (level {}) with args\n", "Error", 3);
-        pr_warn!("{} message (level {}) with args\n", "Warning", 4);
-        pr_notice!("{} message (level {}) with args\n", "Notice", 5);
-        pr_info!("{} message (level {}) with args\n", "Info", 6);
-
-        pr_info!("A {} that", "line");
-        pr_cont!(" is {}", "continued");
-        pr_cont!(" with {}\n", "args");
-
-        arc_print()?;
-
-        trace::trace_rust_sample_loaded(42);
-
-        Ok(RustPrint)
-    }
-}
-
-impl Drop for RustPrint {
-    fn drop(&mut self) {
-        pr_info!("Rust printing macros sample (exit)\n");
-    }
-}
-
-mod trace {
-    use core::ffi::c_int;
-
-    kernel::declare_trace! {
-        /// # Safety
-        ///
-        /// Always safe to call.
-        unsafe fn rust_sample_loaded(magic: c_int);
-    }
-
-    pub(crate) fn trace_rust_sample_loaded(magic: i32) {
-        // SAFETY: Always safe to call.
-        unsafe { rust_sample_loaded(magic as c_int) }
-    }
-}