// 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::try_new(1)?; let b = UniqueArc::try_new("hello, world")?; // 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()?; Ok(RustPrint) }} impl Drop for RustPrint { fn drop(&mut self) { pr_info!("Rust printing macros sample (exit)\n"); }}
// 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::try_new(1)?;
let b = UniqueArc::try_new("hello, world")?;
// 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()?;
Ok(RustPrint)
}
}
impl Drop for RustPrint {
fn drop(&mut self) {
pr_info!("Rust printing macros sample (exit)\n");
}
}