Messages in this thread | | | From | Finn Behrens <> | Subject | Re: [PATCH v1 04/28] rust: samples: add `rust_print` example | Date | Fri, 11 Nov 2022 10:40:44 +0100 |
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On 10 Nov 2022, at 17:41, Miguel Ojeda wrote:
> Add example to exercise the printing macros (`pr_*!`) introduced > in the previous patches. > > Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Finn Behrens <me@kloenk.dev>
> --- > samples/rust/Kconfig | 10 +++++++ > samples/rust/Makefile | 1 + > samples/rust/rust_print.rs | 54 ++++++++++++++++++++++++++++++++++++++ > 3 files changed, 65 insertions(+) > create mode 100644 samples/rust/rust_print.rs > > 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"); Could be nice, to also have an int or similar as arg, but as internal the same macro is used as above, not really of interest.
Regards, Finn > + > + Ok(RustPrint) > + } > +} > + > +impl Drop for RustPrint { > + fn drop(&mut self) { > + pr_info!("Rust printing macros sample (exit)\n"); > + } > +} > -- > 2.38.1
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