diff options
| author | Yanmin Zhang <yanmin_zhang@linux.intel.com> | 2011-10-31 17:11:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-31 17:30:53 -0700 |
| commit | 0eca6b7c78fd997e02bd9850e608102382b7822e (patch) | |
| tree | 39dd9b7b952da5560f4addb3df3e1f907b345d2e /kernel/printk.c | |
| parent | 73efc0394e148d0e15583e13712637831f926720 (diff) | |
| download | lwn-0eca6b7c78fd997e02bd9850e608102382b7822e.tar.gz lwn-0eca6b7c78fd997e02bd9850e608102382b7822e.zip | |
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>
Diffstat (limited to 'kernel/printk.c')
| -rw-r--r-- | kernel/printk.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/printk.c b/kernel/printk.c index b7da18391c38..e62f949ec140 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -532,6 +532,9 @@ 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); +MODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to" + "print all kernel messages to the console."); /* * Write out chars from start to end - 1 inclusive |