[PATCH] Add EXPORT_UNUSED_SYMBOL and EXPORT_UNUSED_SYMBOL_GPL

[karo-tx-linux.git] / include / linux / module.h

diff --git a/include/linux/module.h b/include/linux/module.h
index e144309836af6357e0ec5dc652c27159035820c8..9e9dc7c24d9589e50e84913c76f46ac9ec3b2ae5 100644 (file)
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -6,7 +6,6 @@
  * Rewritten by Richard Henderson <rth@tamu.edu> Dec 1996
  * Rewritten again by Rusty Russell, 2002
  */
-#include <linux/config.h>
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
@@ -106,6 +105,8 @@ extern struct module __this_module;
  *     "GPL and additional rights"     [GNU Public License v2 rights and more]
  *     "Dual BSD/GPL"                  [GNU Public License v2
  *                                      or BSD license choice]
+ *     "Dual MIT/GPL"                  [GNU Public License v2
+ *                                      or MIT license choice]
  *     "Dual MPL/GPL"                  [GNU Public License v2
  *                                      or Mozilla license choice]
  *
@@ -183,6 +184,7 @@ void *__symbol_get_gpl(const char *symbol);
 
 /* For every exported symbol, place a struct in the __ksymtab section */
 #define __EXPORT_SYMBOL(sym, sec)                              \
+       extern typeof(sym) sym;                                 \
        __CRC_SYMBOL(sym, sec)                                  \
        static const char __kstrtab_##sym[]                     \
        __attribute__((section("__ksymtab_strings")))           \
@@ -201,6 +203,15 @@ void *__symbol_get_gpl(const char *symbol);
 #define EXPORT_SYMBOL_GPL_FUTURE(sym)                          \
        __EXPORT_SYMBOL(sym, "_gpl_future")
 
+
+#ifdef CONFIG_UNUSED_SYMBOLS
+#define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused")
+#define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl")
+#else
+#define EXPORT_UNUSED_SYMBOL(sym)
+#define EXPORT_UNUSED_SYMBOL_GPL(sym)
+#endif
+
 #endif
 
 struct module_ref
@@ -259,6 +270,15 @@ struct module
        unsigned int num_gpl_syms;
        const unsigned long *gpl_crcs;
 
+       /* unused exported symbols. */
+       const struct kernel_symbol *unused_syms;
+       unsigned int num_unused_syms;
+       const unsigned long *unused_crcs;
+       /* GPL-only, unused exported symbols. */
+       const struct kernel_symbol *unused_gpl_syms;
+       unsigned int num_unused_gpl_syms;
+       const unsigned long *unused_gpl_crcs;
+
        /* symbols that will be GPL-only in the near future. */
        const struct kernel_symbol *gpl_future_syms;
        unsigned int num_gpl_future_syms;
@@ -283,6 +303,9 @@ struct module
        /* The size of the executable code in each section.  */
        unsigned long init_text_size, core_text_size;
 
+       /* The handle returned from unwind_add_table. */
+       void *unwind_info;
+
        /* Arch-specific module values */
        struct mod_arch_specific arch;
 
@@ -451,6 +474,8 @@ void module_remove_driver(struct device_driver *);
 #define EXPORT_SYMBOL(sym)
 #define EXPORT_SYMBOL_GPL(sym)
 #define EXPORT_SYMBOL_GPL_FUTURE(sym)
+#define EXPORT_UNUSED_SYMBOL(sym)
+#define EXPORT_UNUSED_SYMBOL_GPL(sym)
 
 /* Given an address, look for it in the exception tables. */
 static inline const struct exception_table_entry *
@@ -556,13 +581,4 @@ static inline void module_remove_driver(struct device_driver *driver)
 
 #define __MODULE_STRING(x) __stringify(x)
 
-/* Use symbol_get and symbol_put instead.  You'll thank me. */
-#define HAVE_INTER_MODULE
-extern void __deprecated inter_module_register(const char *,
-               struct module *, const void *);
-extern void __deprecated inter_module_unregister(const char *);
-extern const void * __deprecated inter_module_get_request(const char *,
-               const char *);
-extern void __deprecated inter_module_put(const char *);
-
 #endif /* _LINUX_MODULE_H */