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module: make MODULE_SYMBOL_PREFIX into a CONFIG option

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The next commit will require the use of MODULE_SYMBOL_PREFIX in
.tmp_exports-asm.S.  Currently it is mixed in with C structure
definitions in "asm/module.h".  Move the definition of this arch option
into Kconfig, so it can be easily accessed by any code.

This also lets modpost.c use the same definition.  Previously modpost
relied on a hardcoded list of architectures in mk_elfconfig.c.

A build test for blackfin, one of the two MODULE_SYMBOL_PREFIX archs,
showed the generated code was unchanged.  vmlinux was identical save
for build ids, and an apparently randomized suffix on a single "__key"
symbol in the kallsyms data).

Signed-off-by: Alan Jenkins <[email protected]>
Acked-by: Mike Frysinger <[email protected]> (blackfin)
CC: Sam Ravnborg <[email protected]>
Signed-off-by: Rusty Russell <[email protected]>
This commit is contained in:
Alan Jenkins 2009-11-07 21:03:54 +00:00 • committed by Rusty Russell
commit 9e1b9b8072
12 changed files with 33 additions and 21 deletions
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4
arch/h8300/Kconfig
View file

@ -10,6 +10,10 @@ config H8300
default y
select HAVE_IDE
config SYMBOL_PREFIX
string
default "_"
config MMU
bool
default n

2
arch/h8300/include/asm/module.h
View file

@ -8,6 +8,4 @@ struct mod_arch_specific { };
#define Elf_Sym Elf32_Sym
#define Elf_Ehdr Elf32_Ehdr
#define MODULE_SYMBOL_PREFIX "_"
#endif /* _ASM_H8/300_MODULE_H */

1
arch/h8300/kernel/vmlinux.lds.S
View file

@ -1,4 +1,3 @@
#define VMLINUX_SYMBOL(_sym_) _##_sym_
#include <asm-generic/vmlinux.lds.h>
#include <asm/page.h>