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printk ratelimiting #472

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printk ratelimiting #472

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8 changes: 8 additions & 0 deletions rust/helpers.c
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#include <linux/platform_device.h>
#include <linux/security.h>
#include <asm/io.h>
#include <linux/printk.h>

__noreturn void rust_helper_BUG(void)
{
Expand Down Expand Up @@ -278,6 +279,13 @@ void *rust_helper_dev_get_drvdata(struct device *dev)
}
EXPORT_SYMBOL_GPL(rust_helper_dev_get_drvdata);

void rust_helper_ratelimit_state_init(struct ratelimit_state *rs)
{
static DEFINE_RATELIMIT_STATE(rs_tmpl, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST);
*rs = rs_tmpl;
}
EXPORT_SYMBOL_GPL(rust_helper_ratelimit_state_init);

/* We use bindgen's --size_t-is-usize option to bind the C size_t type
* as the Rust usize type, so we can use it in contexts where Rust
* expects a usize like slice (array) indices. usize is defined to be
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6 changes: 5 additions & 1 deletion rust/kernel/prelude.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,11 @@ pub use macros::{module, module_misc_device};

pub use super::build_assert;

pub use super::{dbg, pr_alert, pr_crit, pr_debug, pr_emerg, pr_err, pr_info, pr_notice, pr_warn};
pub use super::{
dbg, pr_alert, pr_alert_ratelimited, pr_crit, pr_crit_ratelimited, pr_debug, pr_emerg,
pr_emerg_ratelimited, pr_err, pr_err_ratelimited, pr_info, pr_info_ratelimited, pr_notice,
pr_notice_ratelimited, pr_warn, pr_warn_ratelimited, printk_ratelimit,
};

pub use super::static_assert;

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