diff mbox series

[v5,10/12] Add durable_name_printk_ratelimited

Message ID 20200925161929.1136806-11-tasleson@redhat.com
State Not Applicable
Delegated to: David Miller
Headers show
Series Add persistent durable identifier to storage log messages | expand

Commit Message

Tony Asleson Sept. 25, 2020, 4:19 p.m. UTC 
Create a rate limited macro for durable_name_printk so that
we can use this for printk_ratelimited usage in the block
layers and add the durable name key/value to the log
message.

Signed-off-by: Tony Asleson <tasleson@redhat.com>
---
 include/linux/dev_printk.h | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/include/linux/dev_printk.h b/include/linux/dev_printk.h
index 4d57b940b692..9fd675b9ac7c 100644
--- a/include/linux/dev_printk.h
+++ b/include/linux/dev_printk.h
@@ -37,6 +37,15 @@  __printf(3, 4) __cold
 void durable_name_printk(const char *level, const struct device *dev,
 			const char *fmt, ...);
 
+#define durable_name_printk_ratelimited(level, dev, fmt, ...)		\
+do {									\
+	static DEFINE_RATELIMIT_STATE(_rs,				\
+					DEFAULT_RATELIMIT_INTERVAL,	\
+					DEFAULT_RATELIMIT_BURST);	\
+	if (__ratelimit(&_rs))						\
+		durable_name_printk(level, dev, fmt, ##__VA_ARGS__);	\
+} while (0)
+
 __printf(2, 3) __cold
 void _dev_emerg(const struct device *dev, const char *fmt, ...);
 __printf(2, 3) __cold