printk: add module parameter ignore_loglevel to control ignore_loglevel
authorYanmin Zhang <yanmin_zhang@linux.intel.com>
Tue, 1 Nov 2011 00:11:25 +0000 (17:11 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 1 Nov 2011 00:30:53 +0000 (17:30 -0700)
commit0eca6b7c78fd997e02bd9850e608102382b7822e
tree39dd9b7b952da5560f4addb3df3e1f907b345d2e
parent73efc0394e148d0e15583e13712637831f926720
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@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/kernel-parameters.txt
kernel/printk.c