From: Magnus Damm <[email protected]>
The code of autoparam - modified include files. Stores parameter name, type
and description in a section called __param_strings.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Domen Puncer <[email protected]>
include/linux/init.h | 24 ++++++++++++++++++------
include/linux/module.h | 8 ++++++++
include/linux/moduleparam.h | 15 ++++++++++++---
3 files changed, 38 insertions(+), 9 deletions(-)
Index: a/include/linux/init.h
===================================================================
--- a.orig/include/linux/init.h
+++ a/include/linux/init.h
@@ -119,19 +119,30 @@ struct obs_kernel_param {
* Force the alignment so the compiler doesn't space elements of the
* obs_kernel_param "array" too far apart in .init.setup.
*/
-#define __setup_param(str, unique_id, fn, early) \
+#define __setup_param(str, unique_id, fn, early, mark) \
static char __setup_str_##unique_id[] __initdata = str; \
static struct obs_kernel_param __setup_##unique_id \
__attribute_used__ \
__attribute__((__section__(".init.setup"))) \
__attribute__((aligned((sizeof(long))))) \
- = { __setup_str_##unique_id, fn, early }
+ = { __setup_str_##unique_id, fn, early }; \
+ static const char __setup_doc_##unique_id[] \
+ __attribute_used__ \
+ __attribute__((section("__param_strings"))) \
+ = mark str
#define __setup_null_param(str, unique_id) \
- __setup_param(str, unique_id, NULL, 0)
+ __setup_param(str, unique_id, NULL, 0, "o:")
#define __setup(str, fn) \
- __setup_param(str, fn, fn, 0)
+ __setup_param(str, fn, fn, 0, "s:")
+
+#define __setup_desc(str, fn, desc) \
+ __setup(str, fn); \
+ static const char __param_doc_desc_##_parm[] \
+ __attribute_used__ \
+ __attribute__((section("__param_strings"))) \
+ = "d:" str ":" desc
#define __obsolete_setup(str) \
__setup_null_param(str, __LINE__)
@@ -139,7 +150,7 @@ struct obs_kernel_param {
/* NOTE: fn is as per module_param, not __setup! Emits warning if fn
* returns non-zero. */
#define early_param(str, fn) \
- __setup_param(str, fn, fn, 1)
+ __setup_param(str, fn, fn, 1, "e:")
/* Relies on saved_command_line being set */
void __init parse_early_param(void);
@@ -198,9 +209,10 @@ void __init parse_early_param(void);
{ return exitfn; } \
void cleanup_module(void) __attribute__((alias(#exitfn)));
-#define __setup_param(str, unique_id, fn) /* nothing */
+#define __setup_param(str, unique_id, fn, early, mark) /* nothing */
#define __setup_null_param(str, unique_id) /* nothing */
#define __setup(str, func) /* nothing */
+#define __setup_desc(str, fn, desc) /* nothing */
#define __obsolete_setup(str) /* nothing */
#endif
Index: a/include/linux/module.h
===================================================================
--- a.orig/include/linux/module.h
+++ a/include/linux/module.h
@@ -131,10 +131,18 @@ extern struct module __this_module;
/* What your module does. */
#define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
+#ifdef MODULE
/* One for each parameter, describing how to use it. Some files do
multiple of these per line, so can't just use MODULE_INFO. */
#define MODULE_PARM_DESC(_parm, desc) \
__MODULE_INFO(parm, _parm, #_parm ":" desc)
+#else
+#define MODULE_PARM_DESC(_parm, desc) \
+ static const char __param_doc_desc_##_parm[] \
+ __attribute_used__ \
+ __attribute__((section("__param_strings"))) \
+ = "d:" __stringify(KBUILD_MODNAME) "." #_parm ":" desc
+#endif
#define MODULE_DEVICE_TABLE(type,name) \
MODULE_GENERIC_TABLE(type##_device,name)
Index: a/include/linux/moduleparam.h
===================================================================
--- a.orig/include/linux/moduleparam.h
+++ a/include/linux/moduleparam.h
@@ -69,6 +69,12 @@ struct kparam_array
__attribute__ ((unused,__section__ ("__param"),aligned(sizeof(void *)))) \
= { __param_str_##name, perm, set, get, arg }
+#define module_param_doc(prefix, name, type) \
+ static const char __param_doc_##name[] \
+ __attribute_used__ \
+ __attribute__((section("__param_strings"))) \
+ = "m:" prefix #name ":" #type
+
#define module_param_call(name, set, get, arg, perm) \
__module_param_call(MODULE_PARAM_PREFIX, name, set, get, arg, perm)
@@ -78,7 +84,8 @@ struct kparam_array
#define module_param_named(name, value, type, perm) \
param_check_##type(name, &(value)); \
module_param_call(name, param_set_##type, param_get_##type, &value, perm); \
- __MODULE_PARM_TYPE(name, #type)
+ __MODULE_PARM_TYPE(name, #type); \
+ module_param_doc(MODULE_PARAM_PREFIX, name, type)
#define module_param(name, type, perm) \
module_param_named(name, name, type, perm)
@@ -89,7 +96,8 @@ struct kparam_array
= { len, string }; \
module_param_call(name, param_set_copystring, param_get_string, \
&__param_string_##name, perm); \
- __MODULE_PARM_TYPE(name, "string")
+ __MODULE_PARM_TYPE(name, "string"); \
+ module_param_doc(MODULE_PARAM_PREFIX, name, type)
/* Called on module insert or kernel boot */
extern int parse_args(const char *name,
@@ -151,7 +159,8 @@ extern int param_get_invbool(char *buffe
sizeof(array[0]), array }; \
module_param_call(name, param_array_set, param_array_get, \
&__param_arr_##name, perm); \
- __MODULE_PARM_TYPE(name, "array of " #type)
+ __MODULE_PARM_TYPE(name, "array of " #type); \
+ module_param_doc(MODULE_PARAM_PREFIX, name, type)
#define module_param_array(name, type, nump, perm) \
module_param_array_named(name, name, type, nump, perm)
--
-
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