module_param: split perm field into flags and perm

Impact: cleanup

Rather than hack KPARAM_KMALLOCED into the perm field, separate it out.
Since the perm field was 32 bits and only needs 16, we don't add bloat.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 9bbca8e8c19f..009a5f768768 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -36,9 +36,13 @@ typedef int (*param_set_fn)(const char *val, struct kernel_param *kp);
 /* Returns length written or -errno.  Buffer is 4k (ie. be short!) */
 typedef int (*param_get_fn)(char *buffer, struct kernel_param *kp);
 
+/* Flag bits for kernel_param.flags */
+#define KPARAM_KMALLOCED        1
+
 struct kernel_param {
         const char *name;
-        unsigned int perm;
+        u16 perm;
+        u16 flags;
         param_set_fn set;
         param_get_fn get;
         union {
@@ -88,7 +92,7 @@ struct kparam_array
         static struct kernel_param __moduleparam_const __param_##name   \
         __used                                                          \
     __attribute__ ((unused,__section__ ("__param"),aligned(sizeof(void *)))) \
-        = { __param_str_##name, perm, set, get, { arg } }
+        = { __param_str_##name, perm, 0, set, get, { arg } }
 
 #define module_param_call(name, set, get, arg, perm)                          \
         __module_param_call(MODULE_PARAM_PREFIX, name, set, get, arg, perm)