[PATCH] add EXPORT_SYMBOL_GPL_FUTURE()

This patch adds the ability to mark symbols that will be changed in the
future, so that kernel modules that don't include MODULE_LICENSE("GPL")
and use the symbols, will be flagged and printed out to the system log.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/module.h b/include/linux/module.h
index 84d75f3a8a..a25d5f6154 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -198,6 +198,9 @@ void *__symbol_get_gpl(const char *symbol);
 #define EXPORT_SYMBOL_GPL(sym)                                  \
         __EXPORT_SYMBOL(sym, "_gpl")
 
+#define EXPORT_SYMBOL_GPL_FUTURE(sym)                           \
+        __EXPORT_SYMBOL(sym, "_gpl_future")
+
 #endif
 
 struct module_ref
@@ -255,6 +258,11 @@ struct module
         unsigned int num_gpl_syms;
         const unsigned long *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;
+        const unsigned long *gpl_future_crcs;
+
         /* Exception table */
         unsigned int num_exentries;
         const struct exception_table_entry *extable;
@@ -441,6 +449,7 @@ void module_remove_driver(struct device_driver *);
 #else /* !CONFIG_MODULES... */
 #define EXPORT_SYMBOL(sym)
 #define EXPORT_SYMBOL_GPL(sym)
+#define EXPORT_SYMBOL_GPL_FUTURE(sym)
 
 /* Given an address, look for it in the exception tables. */
 static inline const struct exception_table_entry *