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authorMiguel Ojeda <ojeda@kernel.org>2022-11-10 19:41:16 +0300
committerMiguel Ojeda <ojeda@kernel.org>2022-12-01 22:13:11 +0300
commitc3630df66f95e6c18987734b39f0239303dd72d8 (patch)
tree628d0df227bb069221e0d8bfc176fdbe618acaa9 /samples
parentfc6c7cac83f05f455be1f35160a618e9df103838 (diff)
downloadlinux-c3630df66f95e6c18987734b39f0239303dd72d8.tar.xz
rust: samples: add `rust_print` example
Add example to exercise the printing macros (`pr_*!`) introduced in the previous patches. Reviewed-by: Finn Behrens <me@kloenk.dev> Reviewed-by: Wei Liu <wei.liu@kernel.org> Tested-by: Sergio González Collado <sergio.collado@gmail.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'samples')
-rw-r--r--samples/rust/Kconfig10
-rw-r--r--samples/rust/Makefile1
-rw-r--r--samples/rust/rust_print.rs54
3 files changed, 65 insertions, 0 deletions
diff --git a/samples/rust/Kconfig b/samples/rust/Kconfig
index 841e0906e943..b0f74a81c8f9 100644
--- a/samples/rust/Kconfig
+++ b/samples/rust/Kconfig
@@ -20,6 +20,16 @@ config SAMPLE_RUST_MINIMAL
If unsure, say N.
+config SAMPLE_RUST_PRINT
+ tristate "Printing macros"
+ help
+ This option builds the Rust printing macros sample.
+
+ To compile this as a module, choose M here:
+ the module will be called rust_print.
+
+ If unsure, say N.
+
config SAMPLE_RUST_HOSTPROGS
bool "Host programs"
help
diff --git a/samples/rust/Makefile b/samples/rust/Makefile
index 1daba5f8658a..03086dabbea4 100644
--- a/samples/rust/Makefile
+++ b/samples/rust/Makefile
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SAMPLE_RUST_MINIMAL) += rust_minimal.o
+obj-$(CONFIG_SAMPLE_RUST_PRINT) += rust_print.o
subdir-$(CONFIG_SAMPLE_RUST_HOSTPROGS) += hostprogs
diff --git a/samples/rust/rust_print.rs b/samples/rust/rust_print.rs
new file mode 100644
index 000000000000..09f737790f3f
--- /dev/null
+++ b/samples/rust/rust_print.rs
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0
+
+//! Rust printing macros sample.
+
+use kernel::pr_cont;
+use kernel::prelude::*;
+
+module! {
+ type: RustPrint,
+ name: b"rust_print",
+ author: b"Rust for Linux Contributors",
+ description: b"Rust printing macros sample",
+ license: b"GPL",
+}
+
+struct RustPrint;
+
+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");
+
+ Ok(RustPrint)
+ }
+}
+
+impl Drop for RustPrint {
+ fn drop(&mut self) {
+ pr_info!("Rust printing macros sample (exit)\n");
+ }
+}