1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/printk.h b/include/linux/printk.h
index f086d6c99dbc..37f3a6589c1c 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -210,6 +210,12 @@ extern asmlinkage void dump_stack(void) __cold;
 #define pr_fmt(fmt) fmt
 #endif
 
+/*
+ * These can be used to print at the various log levels.
+ * All of these will print unconditionally, although note that pr_debug()
+ * and other debug macros are compiled out unless either DEBUG is defined
+ * or CONFIG_DYNAMIC_DEBUG is set.
+ */
 #define pr_emerg(fmt, ...) \
         printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
 #define pr_alert(fmt, ...) \