From 46c40f938f5f15e0a3ecfdd0feba485f8feaff92 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Mon, 17 Nov 2025 09:24:52 +0900 Subject: [PATCH] rust: print: Add pr_*_once macros Add Rust version of pr_[emerg|alert|crit|err|warn|notice|info]_once macros, which print a message only once. Reviewed-by: Alice Ryhl Signed-off-by: FUJITA Tomonori Link: https://patch.msgid.link/20251117002452.4068692-3-fujita.tomonori@gmail.com [ Added prefix to title. Fixed typo. - Miguel ] Signed-off-by: Miguel Ojeda --- rust/kernel/print.rs | 70 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/rust/kernel/print.rs b/rust/kernel/print.rs index af32054be5a29..6fd84389a8582 100644 --- a/rust/kernel/print.rs +++ b/rust/kernel/print.rs @@ -506,3 +506,73 @@ macro_rules! do_once_lite { ONCE.call_once(|| { $($e)* }); }}; } + +/// Prints an emergency-level message (level 0) only once. +/// +/// Equivalent to the kernel's `pr_emerg_once` macro. +#[macro_export] +macro_rules! pr_emerg_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_emerg!($($arg)*) } + ) +); + +/// Prints an alert-level message (level 1) only once. +/// +/// Equivalent to the kernel's `pr_alert_once` macro. +#[macro_export] +macro_rules! pr_alert_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_alert!($($arg)*) } + ) +); + +/// Prints a critical-level message (level 2) only once. +/// +/// Equivalent to the kernel's `pr_crit_once` macro. +#[macro_export] +macro_rules! pr_crit_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_crit!($($arg)*) } + ) +); + +/// Prints an error-level message (level 3) only once. +/// +/// Equivalent to the kernel's `pr_err_once` macro. +#[macro_export] +macro_rules! pr_err_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_err!($($arg)*) } + ) +); + +/// Prints a warning-level message (level 4) only once. +/// +/// Equivalent to the kernel's `pr_warn_once` macro. +#[macro_export] +macro_rules! pr_warn_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_warn!($($arg)*) } + ) +); + +/// Prints a notice-level message (level 5) only once. +/// +/// Equivalent to the kernel's `pr_notice_once` macro. +#[macro_export] +macro_rules! pr_notice_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_notice!($($arg)*) } + ) +); + +/// Prints an info-level message (level 6) only once. +/// +/// Equivalent to the kernel's `pr_info_once` macro. +#[macro_export] +macro_rules! pr_info_once ( + ($($arg:tt)*) => ( + $crate::do_once_lite! { $crate::pr_info!($($arg)*) } + ) +); -- 2.47.3