You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
3.6 KiB
Diff
120 lines
3.6 KiB
Diff
--- a/include/asm-generic/vmlinux.lds.h
|
|
+++ b/include/asm-generic/vmlinux.lds.h
|
|
@@ -52,6 +52,27 @@
|
|
#define LOAD_OFFSET 0
|
|
#endif
|
|
|
|
+#ifndef SYMTAB_KEEP_STR
|
|
+#define SYMTAB_KEEP_STR *(__ksymtab_strings.*)
|
|
+#define SYMTAB_DISCARD_STR
|
|
+#else
|
|
+#define SYMTAB_DISCARD_STR *(__ksymtab_strings.*)
|
|
+#endif
|
|
+
|
|
+#ifndef SYMTAB_KEEP
|
|
+#define SYMTAB_KEEP *(__ksymtab.*)
|
|
+#define SYMTAB_DISCARD
|
|
+#else
|
|
+#define SYMTAB_DISCARD *(__ksymtab.*)
|
|
+#endif
|
|
+
|
|
+#ifndef SYMTAB_KEEP_GPL
|
|
+#define SYMTAB_KEEP_GPL *(__ksymtab_gpl.*)
|
|
+#define SYMTAB_DISCARD_GPL
|
|
+#else
|
|
+#define SYMTAB_DISCARD_GPL *(__ksymtab_gpl.*)
|
|
+#endif
|
|
+
|
|
#ifndef SYMBOL_PREFIX
|
|
#define VMLINUX_SYMBOL(sym) sym
|
|
#else
|
|
@@ -264,35 +285,35 @@
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab) = .; \
|
|
- *(__ksymtab) \
|
|
+ SYMTAB_KEEP \
|
|
VMLINUX_SYMBOL(__stop___ksymtab) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only symbols */ \
|
|
__ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
|
|
- *(__ksymtab_gpl) \
|
|
+ SYMTAB_KEEP_GPL \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal unused symbols */ \
|
|
__ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
|
|
- *(__ksymtab_unused) \
|
|
+ *(__ksymtab_unused.*) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only unused symbols */ \
|
|
__ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
|
|
- *(__ksymtab_unused_gpl) \
|
|
+ *(__ksymtab_unused_gpl.*) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-future-only symbols */ \
|
|
__ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
|
|
- *(__ksymtab_gpl_future) \
|
|
+ *(__ksymtab_gpl_future.*) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
|
|
} \
|
|
\
|
|
@@ -333,7 +354,7 @@
|
|
\
|
|
/* Kernel symbol table: strings */ \
|
|
__ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
|
|
- *(__ksymtab_strings) \
|
|
+ SYMTAB_KEEP_STR \
|
|
} \
|
|
\
|
|
/* __*init sections */ \
|
|
@@ -648,6 +669,9 @@
|
|
EXIT_TEXT \
|
|
EXIT_DATA \
|
|
EXIT_CALL \
|
|
+ SYMTAB_DISCARD \
|
|
+ SYMTAB_DISCARD_GPL \
|
|
+ SYMTAB_DISCARD_STR \
|
|
*(.discard) \
|
|
*(.discard.*) \
|
|
}
|
|
--- a/include/linux/module.h
|
|
+++ b/include/linux/module.h
|
|
@@ -202,16 +202,24 @@ struct module_use {
|
|
#define __CRC_SYMBOL(sym, sec)
|
|
#endif
|
|
|
|
+#ifdef MODULE
|
|
+#define __EXPORT_SUFFIX(sym)
|
|
+#else
|
|
+#define __EXPORT_SUFFIX(sym) "." #sym
|
|
+#endif
|
|
+
|
|
/* 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"), aligned(1))) \
|
|
+ __attribute__((section("__ksymtab_strings" \
|
|
+ __EXPORT_SUFFIX(sym)), aligned(1))) \
|
|
= MODULE_SYMBOL_PREFIX #sym; \
|
|
static const struct kernel_symbol __ksymtab_##sym \
|
|
__used \
|
|
- __attribute__((section("__ksymtab" sec), unused)) \
|
|
+ __attribute__((section("__ksymtab" sec \
|
|
+ __EXPORT_SUFFIX(sym)), unused)) \
|
|
= { (unsigned long)&sym, __kstrtab_##sym }
|
|
|
|
#define EXPORT_SYMBOL(sym) \
|