1 files changed, 43 insertions, 15 deletions

diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index c47f4d60db0b..ea36486378d8 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -47,14 +47,11 @@ struct kernel_param_ops {
         void (*free)(void *arg);
 };
 
-/* Flag bits for kernel_param.flags */
-#define KPARAM_ISBOOL           2
-
 struct kernel_param {
         const char *name;
         const struct kernel_param_ops *ops;
         u16 perm;
-        u16 flags;
+        s16 level;
         union {
                 void *arg;
                 const struct kparam_string *str;
@@ -131,8 +128,40 @@ struct kparam_array
  * The ops can have NULL set or get functions.
  */
 #define module_param_cb(name, ops, arg, perm)                                 \
-        __module_param_call(MODULE_PARAM_PREFIX,                              \
-                            name, ops, arg, __same_type((arg), bool *), perm)
+        __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, 0)
+
+/**
+ * <level>_param_cb - general callback for a module/cmdline parameter
+ *                    to be evaluated before certain initcall level
+ * @name: a valid C identifier which is the parameter name.
+ * @ops: the set & get operations for this parameter.
+ * @perm: visibility in sysfs.
+ *
+ * The ops can have NULL set or get functions.
+ */
+#define __level_param_cb(name, ops, arg, perm, level)                   \
+        __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, level)
+
+#define core_param_cb(name, ops, arg, perm)             \
+        __level_param_cb(name, ops, arg, perm, 1)
+
+#define postcore_param_cb(name, ops, arg, perm)         \
+        __level_param_cb(name, ops, arg, perm, 2)
+
+#define arch_param_cb(name, ops, arg, perm)             \
+        __level_param_cb(name, ops, arg, perm, 3)
+
+#define subsys_param_cb(name, ops, arg, perm)           \
+        __level_param_cb(name, ops, arg, perm, 4)
+
+#define fs_param_cb(name, ops, arg, perm)               \
+        __level_param_cb(name, ops, arg, perm, 5)
+
+#define device_param_cb(name, ops, arg, perm)           \
+        __level_param_cb(name, ops, arg, perm, 6)
+
+#define late_param_cb(name, ops, arg, perm)             \
+        __level_param_cb(name, ops, arg, perm, 7)
 
 /* On alpha, ia64 and ppc64 relocations to global data cannot go into
    read-only sections (which is part of respective UNIX ABI on these
@@ -146,7 +175,7 @@ struct kparam_array
 
 /* This is the fundamental function for registering boot/module
    parameters. */
-#define __module_param_call(prefix, name, ops, arg, isbool, perm)       \
+#define __module_param_call(prefix, name, ops, arg, perm, level)        \
         /* Default value instead of permissions? */                     \
         static int __param_perm_check_##name __attribute__((unused)) =  \
         BUILD_BUG_ON_ZERO((perm) < 0 || (perm) > 0777 || ((perm) & 2))  \
@@ -155,8 +184,7 @@ struct kparam_array
         static struct kernel_param __moduleparam_const __param_##name   \
         __used                                                          \
     __attribute__ ((unused,__section__ ("__param"),aligned(sizeof(void *)))) \
-        = { __param_str_##name, ops, perm, isbool ? KPARAM_ISBOOL : 0,  \
-            { arg } }
+        = { __param_str_##name, ops, perm, level, { arg } }
 
 /* Obsolete - use module_param_cb() */
 #define module_param_call(name, set, get, arg, perm)                    \
@@ -164,8 +192,7 @@ struct kparam_array
                  { (void *)set, (void *)get };                          \
         __module_param_call(MODULE_PARAM_PREFIX,                        \
                             name, &__param_ops_##name, arg,             \
-                            __same_type(arg, bool *),                   \
-                            (perm) + sizeof(__check_old_set_param(set))*0)
+                            (perm) + sizeof(__check_old_set_param(set))*0, 0)
 
 /* We don't get oldget: it's often a new-style param_get_uint, etc. */
 static inline int
@@ -245,8 +272,7 @@ 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, __same_type(var, bool), perm)
+        __module_param_call("", name, &param_ops_##type, &var, perm, 0)
 #endif /* !MODULE */
 
 /**
@@ -264,7 +290,7 @@ static inline void __kernel_param_unlock(void)
                 = { len, string };                                      \
         __module_param_call(MODULE_PARAM_PREFIX, name,                  \
                             &param_ops_string,                          \
-                            .str = &__param_string_##name, 0, perm);    \
+                            .str = &__param_string_##name, perm, 0);    \
         __MODULE_PARM_TYPE(name, "string")
 
 /**
@@ -292,6 +318,8 @@ extern int parse_args(const char *name,
                       char *args,
                       const struct kernel_param *params,
                       unsigned num,
+                      s16 level_min,
+                      s16 level_max,
                       int (*unknown)(char *param, char *val));
 
 /* Called by module remove. */
@@ -403,7 +431,7 @@ extern int param_set_bint(const char *val, const struct kernel_param *kp);
         __module_param_call(MODULE_PARAM_PREFIX, name,                  \
                             &param_array_ops,                           \
                             .arr = &__param_arr_##name,                 \
-                            __same_type(array[0], bool), perm);         \
+                            perm, 0);                                   \
         __MODULE_PARM_TYPE(name, "array of " #type)
 
 extern struct kernel_param_ops param_array_ops;