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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 <alan-jenkins@tuffmail.co.uk>
Acked-by: Mike Frysinger <vapier@gentoo.org> (blackfin)
CC: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Alan Jenkins
2009-11-07 21:03:54 +00:00
committed by Rusty Russell
parent 3e7b19efe6
commit 9e1b9b8072
12 changed files with 33 additions and 21 deletions
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8
include/asm-generic/vmlinux.lds.h
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@@ -52,8 +52,12 @@
#define LOAD_OFFSET 0
#endif
#ifndef VMLINUX_SYMBOL
#define VMLINUX_SYMBOL(_sym_) _sym_
#ifndef SYMBOL_PREFIX
#define VMLINUX_SYMBOL(sym) sym
#else
#define PASTE2(x,y) x##y
#define PASTE(x,y) PASTE2(x,y)
#define VMLINUX_SYMBOL(sym) PASTE(SYMBOL_PREFIX, sym)
#endif
/* Align . to a 8 byte boundary equals to maximum function alignment. */