[v5 08/12] Add durable_name_printk

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Ideally block related code would standardize on using dev_printk,
but dev_printk does change the user visible messages which is
questionable.  Adding this function which adds the structured
key/value durable name to the log entry.  It has the
same signature as dev_printk.  In the future, code that
is using this could easily transition to dev_printk when that
becomes workable.

Signed-off-by: Tony Asleson <tasleson@xxxxxxxxxx>
---
 drivers/base/core.c        | 15 +++++++++++++++
 include/linux/dev_printk.h |  5 +++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 72a93b041a2d..447b0ebc93af 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -3975,6 +3975,21 @@ void dev_printk(const char *level, const struct device *dev,
 }
 EXPORT_SYMBOL(dev_printk);
 
+void durable_name_printk(const char *level, const struct device *dev,
+		const char *fmt, ...)
+{
+	size_t dictlen;
+	va_list args;
+	char dict[288];
+
+	dictlen = dev_durable_name(dev, dict, sizeof(dict));
+
+	va_start(args, fmt);
+	vprintk_emit(0, level[1] - '0', dict, dictlen, fmt, args);
+	va_end(args);
+}
+EXPORT_SYMBOL(durable_name_printk);
+
 #define define_dev_printk_level(func, kern_level)		\
 void func(const struct device *dev, const char *fmt, ...)	\
 {								\
diff --git a/include/linux/dev_printk.h b/include/linux/dev_printk.h
index 3028b644b4fb..4d57b940b692 100644
--- a/include/linux/dev_printk.h
+++ b/include/linux/dev_printk.h
@@ -32,6 +32,11 @@ int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
 __printf(3, 4) __cold
 void dev_printk(const char *level, const struct device *dev,
 		const char *fmt, ...);
+
+__printf(3, 4) __cold
+void durable_name_printk(const char *level, const struct device *dev,
+			const char *fmt, ...);
+
 __printf(2, 3) __cold
 void _dev_emerg(const struct device *dev, const char *fmt, ...);
 __printf(2, 3) __cold
-- 
2.26.2




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