kernel: add support for linux 3.2.1

[openwrt.git] / target / linux / generic / patches-3.2 / 220-module_exports.patch

diff --git a/target/linux/generic/patches-3.2/220-module_exports.patch b/target/linux/generic/patches-3.2/220-module_exports.patch
new file mode 100644 (file)
index 0000000..be6b6ff
--- /dev/null
+++ b/target/linux/generic/patches-3.2/220-module_exports.patch
@@ -0,0 +1,89 @@
+--- 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 *(SORT(___ksymtab+*))
++#define SYMTAB_DISCARD
++#else
++#define SYMTAB_DISCARD *(SORT(___ksymtab+*))
++#endif
++
++#ifndef SYMTAB_KEEP_GPL
++#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*))
++#define SYMTAB_DISCARD_GPL
++#else
++#define SYMTAB_DISCARD_GPL *(SORT(___ksymtab_gpl+*))
++#endif
++
+ #ifndef SYMBOL_PREFIX
+ #define VMLINUX_SYMBOL(sym) sym
+ #else
+@@ -275,14 +296,14 @@
+       /* Kernel symbol table: Normal symbols */                       \
+       __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
+               VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
+-              *(SORT(___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) = .;              \
+-              *(SORT(___ksymtab_gpl+*))                               \
++              SYMTAB_KEEP_GPL                                         \
+               VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
+       }                                                               \
+                                                                       \
+@@ -344,7 +365,7 @@
+                                                                       \
+       /* Kernel symbol table: strings */                              \
+         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {       \
+-              *(__ksymtab_strings)                                    \
++              SYMTAB_KEEP_STR                                         \
+       }                                                               \
+                                                                       \
+       /* __*init sections */                                          \
+@@ -676,6 +697,9 @@
+       EXIT_TEXT                                                       \
+       EXIT_DATA                                                       \
+       EXIT_CALL                                                       \
++      SYMTAB_DISCARD                                                  \
++      SYMTAB_DISCARD_GPL                                              \
++      SYMTAB_DISCARD_STR                                              \
+       *(.discard)                                                     \
+       *(.discard.*)                                                   \
+       }
+--- a/include/linux/export.h
++++ b/include/linux/export.h
+@@ -45,12 +45,19 @@ extern struct module __this_module;
+ #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                                                  \