module: make MODULE_SYMBOL_PREFIX into a CONFIG option

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

View file

@ -9,9 +9,6 @@ main(int argc, char **argv)
unsigned char ei[EI_NIDENT];
union { short s; char c[2]; } endian_test;
if (argc != 2) {
fprintf(stderr, "Error: no arch\n");
}
if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
fprintf(stderr, "Error: input truncated\n");
return 1;
@ -55,12 +52,6 @@ main(int argc, char **argv)
else
exit(1);
if ((strcmp(argv[1], "h8300") == 0)
|| (strcmp(argv[1], "blackfin") == 0))
printf("#define MODULE_SYMBOL_PREFIX \"_\"\n");
else
printf("#define MODULE_SYMBOL_PREFIX \"\"\n");
return 0;
}