From: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Date: Wed, 5 Oct 2011 00:43:27 +0000 (+1100)
Subject: printk: add module parameter ignore_loglevel to control ignore_loglevel
X-Git-Tag: next-20111005~2^2~106
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=da7954040b4773ca25eb6b077ef122c0b1937c77;p=karo-tx-linux.git

printk: add module parameter ignore_loglevel to control ignore_loglevel

We are enabling some power features on medfield.  To test suspend-2-RAM
conveniently, we need turn on/off ignore_loglevel frequently without
rebooting.

Add a module parameter, so users can change it by:
/sys/module/printk/parameters/ignore_loglevel

Signed-off-by: Yanmin Zhang <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@google.com>
---

diff --git a/kernel/printk.c b/kernel/printk.c
index b7da18391c38..92d13358cea5 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -532,6 +532,7 @@ static int __init ignore_loglevel_setup(char *str)
 }
 
 early_param("ignore_loglevel", ignore_loglevel_setup);
+module_param_named(ignore_loglevel, ignore_loglevel, bool, S_IRUGO | S_IWUSR);
 
 /*
  * Write out chars from start to end - 1 inclusive