[PATCH] add ignore_loglevel boot option

Sometimes the kernel prints something interesting while userspace bootup
keeps messages turned off via loglevel.  Enable the printing of /all/
kernel messages via the "ignore_loglevel" boot option.  Off by default.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 2a40d9f6ffad..6b3c3e37a277 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -650,6 +650,10 @@ and is between 256 and 4096 characters. It is defined in the file
         idle=           [HW]
                         Format: idle=poll or idle=halt
 
+        ignore_loglevel [KNL]
+                        Ignore loglevel setting - this will print /all/
+                        kernel messages to the console. Useful for debugging.
+
         ihash_entries=  [KNL]
                         Set number of hash buckets for inode cache.