The patch titled
Subject: ARM: decompressor: add a memcmp() declaration
has been added to the -mm tree. Its filename is
bitmap-use-memcmp-optimisation-in-more-situations-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/bitmap-use-memcmp-optimisation-in-more-situations-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/bitmap-use-memcmp-optimisation-in-more-situations-fix.patch
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From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: ARM: decompressor: add a memcmp() declaration
A reference to memcmp() was added to bitmap.h, which causes another build
warning in the decompressor due to the incompatibility with the regular
kernel string functions:
In file included from /git/arm-soc/include/linux/nodemask.h:94:0,
from /git/arm-soc/include/linux/mmzone.h:16,
from /git/arm-soc/include/linux/gfp.h:5,
from /git/arm-soc/include/linux/kmod.h:22,
from /git/arm-soc/include/linux/module.h:13,
from /git/arm-soc/arch/arm/boot/compressed/../../../../lib/lz4/lz4_decompress.c:39,
from /git/arm-soc/arch/arm/boot/compressed/../../../../lib/decompress_unlz4.c:13,
from /git/arm-soc/arch/arm/boot/compressed/decompress.c:56:
include/linux/bitmap.h: In function 'bitmap_equal':
include/linux/bitmap.h:270:11: error: implicit declaration of function 'memcmp'; did you mean 'memchr'? [-Werror=implicit-function-declaration]
This adds one more declaration along with the existing ones. It would be
nice to find a more generic solution here so we don't have to do this
again the next time, but I couldn't think of a good way to do that.
Fixes: 2118d3a701a8 ("bitmap: Use memcmp optimisation in more situations")
Link: http://lkml.kernel.org/r/20170630153908.3439707-1-arnd@xxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/compressed/decompress.c | 1 +
1 file changed, 1 insertion(+)
diff -puN arch/arm/boot/compressed/decompress.c~bitmap-use-memcmp-optimisation-in-more-situations-fix arch/arm/boot/compressed/decompress.c
--- a/arch/arm/boot/compressed/decompress.c~bitmap-use-memcmp-optimisation-in-more-situations-fix
+++ a/arch/arm/boot/compressed/decompress.c
@@ -33,6 +33,7 @@ extern void error(char *);
/* Not needed, but used in some headers pulled in by decompressors */
extern char * strstr(const char * s1, const char *s2);
extern size_t strlen(const char *s);
+extern int memcmp(const void *cs, const void *ct, size_t count);
#ifdef CONFIG_KERNEL_GZIP
#include "../../../../lib/decompress_inflate.c"
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix.patch
mm-hugetlb-soft-offline-dissolve-source-hugepage-after-successful-migration-fix.patch
kernelh-handle-pointers-to-arrays-better-in-container_of-fix.patch
bitmap-use-memcmp-optimisation-in-more-situations-fix.patch
watchdog-provide-watchdog_reconfigure-for-arch-watchdogs-fix-2.patch
include-linux-stringh-add-the-option-of-fortified-stringh-functions-fix.patch
kmod-add-test-driver-to-stress-test-the-module-loader-fix.patch
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