diff options
author | Rusty Russell <rusty@rustcorp.com.au> | 2013-03-15 00:34:17 -0400 |
---|---|---|
committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-03-15 00:39:43 -0400 |
commit | b92021b09df70c1609e3547f3d6128dd560be97f (patch) | |
tree | 0203752a738c71718f5141b84f5143d1dc8b431d /include/asm-generic/vmlinux.lds.h | |
parent | 4febd95a8a85dd38b1a71fcf9726e19c7fd20039 (diff) |
CONFIG_SYMBOL_PREFIX: cleanup.
We have CONFIG_SYMBOL_PREFIX, which three archs define to the string
"_". But Al Viro broke this in "consolidate cond_syscall and
SYSCALL_ALIAS declarations" (in linux-next), and he's not the first to
do so.
Using CONFIG_SYMBOL_PREFIX is awkward, since we usually just want to
prefix it so something. So various places define helpers which are
defined to nothing if CONFIG_SYMBOL_PREFIX isn't set:
1) include/asm-generic/unistd.h defines __SYMBOL_PREFIX.
2) include/asm-generic/vmlinux.lds.h defines VMLINUX_SYMBOL(sym)
3) include/linux/export.h defines MODULE_SYMBOL_PREFIX.
4) include/linux/kernel.h defines SYMBOL_PREFIX (which differs from #7)
5) kernel/modsign_certificate.S defines ASM_SYMBOL(sym)
6) scripts/modpost.c defines MODULE_SYMBOL_PREFIX
7) scripts/Makefile.lib defines SYMBOL_PREFIX on the commandline if
CONFIG_SYMBOL_PREFIX is set, so that we have a non-string version
for pasting.
(arch/h8300/include/asm/linkage.h defines SYMBOL_NAME(), too).
Let's solve this properly:
1) No more generic prefix, just CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX.
2) Make linux/export.h usable from asm.
3) Define VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR().
4) Make everyone use them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Tested-by: James Hogan <james.hogan@imgtec.com> (metag)
Diffstat (limited to 'include/asm-generic/vmlinux.lds.h')
-rw-r--r-- | include/asm-generic/vmlinux.lds.h | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index afa12c7a025c..eb58d2d7d971 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h | |||
@@ -52,13 +52,7 @@ | |||
52 | #define LOAD_OFFSET 0 | 52 | #define LOAD_OFFSET 0 |
53 | #endif | 53 | #endif |
54 | 54 | ||
55 | #ifndef SYMBOL_PREFIX | 55 | #include <linux/export.h> |
56 | #define VMLINUX_SYMBOL(sym) sym | ||
57 | #else | ||
58 | #define PASTE2(x,y) x##y | ||
59 | #define PASTE(x,y) PASTE2(x,y) | ||
60 | #define VMLINUX_SYMBOL(sym) PASTE(SYMBOL_PREFIX, sym) | ||
61 | #endif | ||
62 | 56 | ||
63 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ | 57 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
64 | #define ALIGN_FUNCTION() . = ALIGN(8) | 58 | #define ALIGN_FUNCTION() . = ALIGN(8) |