target/linux/generic-2.6/patches-2.6.28/027-module_exports.patch

   1 --- a/Makefile
   2 +++ b/Makefile
   3 @@ -963,7 +963,7 @@ prepare: prepare0
   4  # Leave this as default for preprocessing vmlinux.lds.S, which is now
   5  # done in arch/$(ARCH)/kernel/Makefile
   6
   7 -export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
   8 +export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) $(EXTRA_LDSFLAGS)
   9
  10  # The asm symlink changes when $(ARCH) changes.
  11  # Detect this and ask user to run make mrproper
  12 --- a/include/asm-generic/vmlinux.lds.h
  13 +++ b/include/asm-generic/vmlinux.lds.h
  14 @@ -2,6 +2,18 @@
  15  #define LOAD_OFFSET 0
  16  #endif
  17
  18 +#ifndef SYMTAB_KEEP_STR
  19 +#define SYMTAB_KEEP_STR *(__ksymtab_strings.*)
  20 +#endif
  21 +
  22 +#ifndef SYMTAB_KEEP
  23 +#define SYMTAB_KEEP *(__ksymtab.*)
  24 +#endif
  25 +
  26 +#ifndef SYMTAB_KEEP_GPL
  27 +#define SYMTAB_KEEP_GPL *(__ksymtab_gpl.*)
  28 +#endif
  29 +
  30  #ifndef VMLINUX_SYMBOL
  31  #define VMLINUX_SYMBOL(_sym_) _sym_
  32  #endif
  33 @@ -124,35 +136,35 @@
  34         /* Kernel symbol table: Normal symbols */                       \
  35         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
  36                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
  37 -               *(__ksymtab)                                            \
  38 +               SYMTAB_KEEP                                             \
  39                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
  40         }                                                               \
  41                                                                         \
  42         /* Kernel symbol table: GPL-only symbols */                     \
  43         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
  44                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
  45 -               *(__ksymtab_gpl)                                        \
  46 +               SYMTAB_KEEP_GPL                                         \
  47                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
  48         }                                                               \
  49                                                                         \
  50         /* Kernel symbol table: Normal unused symbols */                \
  51         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
  52                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
  53 -               *(__ksymtab_unused)                                     \
  54 +               *(__ksymtab_unused.*)                                   \
  55                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
  56         }                                                               \
  57                                                                         \
  58         /* Kernel symbol table: GPL-only unused symbols */              \
  59         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
  60                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
  61 -               *(__ksymtab_unused_gpl)                                 \
  62 +               *(__ksymtab_unused_gpl.*)                               \
  63                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
  64         }                                                               \
  65                                                                         \
  66         /* Kernel symbol table: GPL-future-only symbols */              \
  67         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
  68                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
  69 -               *(__ksymtab_gpl_future)                                 \
  70 +               *(__ksymtab_gpl_future.*)                               \
  71                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
  72         }                                                               \
  73                                                                         \
  74 @@ -193,7 +205,13 @@
  75                                                                         \
  76         /* Kernel symbol table: strings */                              \
  77          __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {        \
  78 -               *(__ksymtab_strings)                                    \
  79 +               SYMTAB_KEEP_STR                                         \
  80 +       }                                                               \
  81 +                                                                       \
  82 +       /DISCARD/ : {                                                   \
  83 +               *(__ksymtab.*)                                          \
  84 +               *(__ksymtab_gpl.*)                                      \
  85 +               *(__ksymtab_strings.*)                                  \
  86         }                                                               \
  87                                                                         \
  88         /* __*init sections */                                          \
  89 --- a/include/linux/module.h
  90 +++ b/include/linux/module.h
  91 @@ -187,16 +187,24 @@ void *__symbol_get_gpl(const char *symbo
  92  #define __CRC_SYMBOL(sym, sec)
  93  #endif
  94
  95 +#ifdef MODULE
  96 +#define __EXPORT_SUFFIX(sym)
  97 +#else
  98 +#define __EXPORT_SUFFIX(sym) "." #sym
  99 +#endif
 100 +
 101  /* For every exported symbol, place a struct in the __ksymtab section */
 102  #define __EXPORT_SYMBOL(sym, sec)                              \
 103         extern typeof(sym) sym;                                 \
 104         __CRC_SYMBOL(sym, sec)                                  \
 105         static const char __kstrtab_##sym[]                     \
 106 -       __attribute__((section("__ksymtab_strings"), aligned(1))) \
 107 +       __attribute__((section("__ksymtab_strings"              \
 108 +         __EXPORT_SUFFIX(sym)), aligned(1)))                   \
 109         = MODULE_SYMBOL_PREFIX #sym;                            \
 110         static const struct kernel_symbol __ksymtab_##sym       \
 111         __used                                                  \
 112 -       __attribute__((section("__ksymtab" sec), unused))       \
 113 +       __attribute__((section("__ksymtab" sec                  \
 114 +         __EXPORT_SUFFIX(sym)), unused))                       \
 115         = { (unsigned long)&sym, __kstrtab_##sym }
 116
 117  #define EXPORT_SYMBOL(sym)                                     \