From: Yanmin Zhang <yanmin_zhang@linux.intel.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH ] printk: add module parameter ignore_loglevel to control ignore_loglevel
Date: Tue, 09 Aug 2011 11:12:44 +0800 [thread overview]
Message-ID: <1312859564.1743.13.camel@ymzhang> (raw)
We are enabling some power features on medfield. To test suspend-2-RAM
conveniently, we need turn on/off ignore_loglevel frequently without rebooting.
Below patch adds a module parameter, so users could change it by:
/sys/module/printk/parameters/ignore_loglevel
Signed-off-by: Yanmin Zhang <yanmin.zhang@intel.com>
---
kernel/printk.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/printk.c b/kernel/printk.c
index ce00f1b..12d4437 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -530,6 +530,7 @@ 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
--
1.7.1
reply other threads:[~2011-08-09 3:13 UTC|newest]
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