[PATCH/RFC] m68k: Uninline strchr()

From: Geert Uytterhoeven
Date: Sun Jan 09 2011 - 13:43:05 EST


Some versions of gcc replace calls to strstr() with single-character
"needle" string parameters by calls to strchr() behind our back.

If strchr() is defined as an inline function, this causes linking errors
like

ERROR: "strchr" [drivers/target/target_core_mod.ko] undefined!

As m68k is the only architecture that has an inline strchr() and this
inline version is not an optimized asm version, uninline strchr() and use
the standard out-of-line C version in lib/string.c instead.

This also decreases the defconfig/allmodconfig kernel image sizes by a few
hundred bytes.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

diff --git a/arch/m68k/include/asm/string.h b/arch/m68k/include/asm/string.h
index 2936dda..65b1312 100644
--- a/arch/m68k/include/asm/string.h
+++ b/arch/m68k/include/asm/string.h
@@ -81,18 +81,6 @@ static inline char *strncpy(char *dest, const char *src, size_t n)
strcpy(__d + strlen(__d), (s)); \
})

-#define __HAVE_ARCH_STRCHR
-static inline char *strchr(const char *s, int c)
-{
- char sc, ch = c;
-
- for (; (sc = *s++) != ch; ) {
- if (!sc)
- return NULL;
- }
- return (char *)s - 1;
-}
-
#ifndef CONFIG_COLDFIRE
#define __HAVE_ARCH_STRCMP
static inline int strcmp(const char *cs, const char *ct)
--
1.7.0.4

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/