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 console_suspend_enabled to control console_suspend_enabled
Date: Tue, 09 Aug 2011 11:09:04 +0800 [thread overview]
Message-ID: <1312859345.1743.9.camel@ymzhang> (raw)
We are enabling some power features on medfield. To test suspend-2-RAM
conveniently, we need turn on/off console_suspend_enabled frequently.
Below patch adds a module parameter, so users could change it by:
/sys/module/printk/parameters/console_suspend_enabled
Signed-off-by: Yanmin Zhang <yanmin.zhang@intel.com>
---
kernel/printk.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/kernel/printk.c b/kernel/printk.c
index 37dff34..ce00f1b 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1106,6 +1106,8 @@ static int __init console_suspend_disable(char *str)
return 1;
}
__setup("no_console_suspend", console_suspend_disable);
+module_param_named(console_suspend_enabled, console_suspend_enabled,
+ bool, S_IRUGO | S_IWUSR);
/**
* suspend_console - suspend the console subsystem
--
1.7.1
next reply other threads:[~2011-08-09 3:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-09 3:09 Yanmin Zhang [this message]
2011-08-09 8:01 ` [PATCH ] printk: add module parameter console_suspend_enabled to control console_suspend_enabled Dave Young
2011-08-09 8:55 ` [PATCH ] printk: add module parameter console_suspend " Yanmin Zhang
2011-08-09 9:59 ` Dave Young
2011-08-10 0:57 ` Yanmin Zhang
2011-08-10 1:16 ` Dave Young
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