From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Mon, 30 Mar 2015 23:20:09 +0000 (-0700)
Subject: module: add core_param_unsafe
X-Git-Tag: firefly_0821_release~176^2~1546^2~23
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ec0ccc16a09fc32f7142ef3ddf1c2276fbbb35d0;p=firefly-linux-kernel-4.4.55.git

module: add core_param_unsafe

Similarly to module_param_unsafe(), add the helper to be used by core
code wishing to expose unsafe debugging or testing parameters that taint
the kernel when set.

Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 13923709d30d..6480dcaca275 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -310,6 +310,15 @@ static inline void __kernel_param_unlock(void)
 #define core_param(name, var, type, perm)				\
 	param_check_##type(name, &(var));				\
 	__module_param_call("", name, &param_ops_##type, &var, perm, -1, 0)
+
+/**
+ * core_param_unsafe - same as core_param but taints kernel
+ */
+#define core_param_unsafe(name, var, type, perm)		\
+	param_check_##type(name, &(var));				\
+	__module_param_call("", name, &param_ops_##type, &var, perm,	\
+			    -1, KERNEL_PARAM_FL_UNSAFE)
+
 #endif /* !MODULE */
 
 /**