asmlinkage, module: Make ksymtab and kcrctab symbols and __this_module __visible

Make the ksymtab symbols for EXPORT_SYMBOL visible.
This prevents the LTO compiler from adding a .NUMBER prefix,
which avoids various problems in later export processing.

Cc: rusty@rustcorp.com.au
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/include/linux/export.h b/include/linux/export.h
index 412cd50..3f2793d 100644 (file)
--- a/include/linux/export.h
+++ b/include/linux/export.h
@@ -43,7 +43,7 @@ extern struct module __this_module;
 /* Mark the CRC weak since genksyms apparently decides not to
  * generate a checksums for some symbols */
 #define __CRC_SYMBOL(sym, sec)                                 \
-       extern void *__crc_##sym __attribute__((weak));         \
+       extern __visible void *__crc_##sym __attribute__((weak));               \
        static const unsigned long __kcrctab_##sym              \
        __used                                                  \
        __attribute__((section("___kcrctab" sec "+" #sym), unused))     \
@@ -59,7 +59,7 @@ extern struct module __this_module;
        static const char __kstrtab_##sym[]                     \
        __attribute__((section("__ksymtab_strings"), aligned(1))) \
        = VMLINUX_SYMBOL_STR(sym);                              \
-       static const struct kernel_symbol __ksymtab_##sym       \
+       __visible const struct kernel_symbol __ksymtab_##sym    \
        __used                                                  \
        __attribute__((section("___ksymtab" sec "+" #sym), unused))     \
        = { (unsigned long)&sym, __kstrtab_##sym }

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 393706b..9b873ac 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1861,7 +1861,7 @@ static void add_header(struct buffer *b, struct module *mod)
        buf_printf(b, "\n");
        buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n");
        buf_printf(b, "\n");
-       buf_printf(b, "struct module __this_module\n");
+       buf_printf(b, "__visible struct module __this_module\n");
        buf_printf(b, "__attribute__((section(\".gnu.linkonce.this_module\"))) = {\n");
        buf_printf(b, "\t.name = KBUILD_MODNAME,\n");
        if (mod->has_init)