[PATCH] clean up kernel messages
Arrange for all kernel printks to be no-ops. Only available if
CONFIG_EMBEDDED.
This patch saves about 375k on my laptop config and nearly 100k on minimal
configs.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/init/Kconfig b/init/Kconfig
index 42dca39..40d286d 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -275,6 +275,17 @@
reported. KALLSYMS_EXTRA_PASS is only a temporary workaround while
you wait for kallsyms to be fixed.
+
+config PRINTK
+ default y
+ bool "Enable support for printk" if EMBEDDED
+ help
+ This option enables normal printk support. Removing it
+ eliminates most of the message strings from the kernel image
+ and makes the kernel more or less silent. As this makes it
+ very difficult to diagnose system problems, saying N here is
+ strongly discouraged.
+
config BUG
bool "BUG() support" if EMBEDDED
default y