The patch titled
printk: add ignore_loglevel as module parameter
has been added to the -mm tree. Its filename is
printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel-fix.patch
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------------------------------------------------------
Subject: printk: add ignore_loglevel as module parameter
From: Yanmin Zhang <yanmin_zhang@xxxxxxxxxxxxxxx>
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 could change it by:
/sys/module/printk/parameters/ignore_loglevel
Signed-off-by: Zhang Yanmin <yanmin_zhang@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/kernel-parameters.txt | 3 +++
kernel/printk.c | 2 ++
2 files changed, 5 insertions(+)
diff -puN Documentation/kernel-parameters.txt~printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel-fix Documentation/kernel-parameters.txt
--- a/Documentation/kernel-parameters.txt~printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel-fix
+++ a/Documentation/kernel-parameters.txt
@@ -973,6 +973,9 @@ bytes respectively. Such letter suffixes
ignore_loglevel [KNL]
Ignore loglevel setting - this will print /all/
kernel messages to the console. Useful for debugging.
+ We also add it as printk module parameter, so users
+ could change it dynamically, usually by
+ /sys/module/printk/parameters/ignore_loglevel.
ihash_entries= [KNL]
Set number of hash buckets for inode cache.
diff -puN kernel/printk.c~printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel-fix kernel/printk.c
--- a/kernel/printk.c~printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel-fix
+++ a/kernel/printk.c
@@ -533,6 +533,8 @@ static int __init ignore_loglevel_setup(
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
_
Patches currently in -mm which might be from yanmin_zhang@xxxxxxxxxxxxxxx are
printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel.patch
printk-add-module-parameter-ignore_loglevel-to-control-ignore_loglevel-fix.patch
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