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authorYanmin Zhang <yanmin_zhang@linux.intel.com>2011-10-31 17:11:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-31 17:30:53 -0700
commit134620f7a865b3bc9e3d56d460603592b70ede21 (patch)
tree82d455ffba5417b731d0283c6593e101dfb625ac /kernel
parent0eca6b7c78fd997e02bd9850e608102382b7822e (diff)
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printk: add console_suspend module parameter
We are enabling some power features on medfield. To test suspend-2-RAM conveniently, we need turn on/off console_suspend_enabled frequently. Add a module parameter, so users could change it by: /sys/module/printk/parameters/console_suspend Signed-off-by: Yanmin Zhang <yanmin_zhang@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/printk.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index e62f949ec140..6d9dedd11450 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1111,6 +1111,10 @@ static int __init console_suspend_disable(char *str)
return 1;
}
__setup("no_console_suspend", console_suspend_disable);
+module_param_named(console_suspend, console_suspend_enabled,
+ bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(console_suspend, "suspend console during suspend"
+ " and hibernate operations");
/**
* suspend_console - suspend the console subsystem