Introduce a config option which allows to selectively compile out
printk messages based on a specified verbosity level.
Signed-off-by: Marc Andre Tanner <m...@brain-dump.org>
---
init/Kconfig | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig
index 3f7e609..3618168 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -833,6 +833,34 @@ config PRINTK
very difficult to diagnose system problems, saying N here is
strongly discouraged.
+config PRINTK_VERBOSITY
+ int "Printk compile time verbosity"
+ depends on EMBEDDED && PRINTK
+ range 0 7
+ default 0
+ help
+
+ Select the maximum printk verbosity level to be compiled into
+ the kernel.
+
+ Messages above the specified verbosity level are removed from
+ the kernel at compile time. This reduces the kernel image size
+ at the cost of a calmer kernel.
+
+ Possible verbosity levels are:
+
+ 0 Disable this feature and compile all messages in.
+
+ 1 KERN_ALERT /* action must be taken immediately */
+ 2 KERN_CRIT /* critical conditions */
+ 3 KERN_ERR /* error conditions */
+ 4 KERN_WARNING /* warning conditions */
+ 5 KERN_NOTICE /* normal but significant condition */
+ 6 KERN_INFO /* informational */
+ 7 KERN_DEBUG /* debug-level messages */
+
+ If unsure, just move on and leave this option alone.
+
config BUG
bool "BUG() support" if EMBEDDED
default y
--
1.6.3.3
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