From b5d250a50ec0ae873fea50cc574d056620032ec5 Mon Sep 17 00:00:00 2001
From: FreeArtMan <dos21h@gmail.com>
Date: Thu, 15 Sep 2016 20:03:05 +0100
Subject: Kernel debug messages: new chapter about different printk macroses

---
 md/writeup/kernel_debug_messages.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'md')

diff --git a/md/writeup/kernel_debug_messages.md b/md/writeup/kernel_debug_messages.md
index 38b566a..2a36696 100644
--- a/md/writeup/kernel_debug_messages.md
+++ b/md/writeup/kernel_debug_messages.md
@@ -141,6 +141,26 @@ Here is defined formating specifiers __Documentation/printk-formats.txt__
 | bitfields such as page flags, gfp_flags | %pG[pgv] |
 | netdev_features_t | %pNF |
 
+## Shortened printk versions
+Header files defines shortcut versions of print functions for each of log level.
+
+| Function names | Note |
+| --- | --- |
+| pr_emerg | |
+| pr_alert | |
+| pr_crit | |
+| pr_err | |
+| pr_warn | |
+| pr_notice | |
+| pr_info | |
+| no_printk | dummy printk without output |
+| pr_devel | when DEBUG is defined |
+| printk_once | print one time messages |
+| printk_deferred_once | |
+| pr_*_once | print once loglevel specific|
+| printk_ratelimited | |
+| pr_*_ratelimited | printk with loglevel and ratelimit |
+
 ## Links
 
 1. http://elinux.org/Debugging_by_printing
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