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Subject[PATCH 28/74] lto: Make ksymtab and kcrctab symbols and __this_module __visible
Date
From: Andi Kleen <ak@linux.intel.com>

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.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
include/linux/export.h | 4 ++--
scripts/mod/modpost.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/export.h b/include/linux/export.h
index 784617e..77a3e8c 100644
--- a/include/linux/export.h
+++ b/include/linux/export.h
@@ -36,7 +36,7 @@ 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)) \
@@ -52,7 +52,7 @@ extern struct module __this_module;
static const char __kstrtab_##sym[] \
__attribute__((section("__ksymtab_strings"), aligned(1))) \
= MODULE_SYMBOL_PREFIX #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 68e9f5e..c797e95 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1862,7 +1862,7 @@ 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)
--
1.7.7.6


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