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lib/string: remove unnecessary #undefs

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A few architecture specific string.h functions used to be implemented in
terms of preprocessor defines to the corresponding compiler builtins.
Since this is no longer the case, remove unused #undefs.

Only memcmp is still defined in terms of builtins for a few arches.

Link: https://github.com/ClangBuiltLinux/linux/issues/428
Link: https://lkml.kernel.org/r/20201120041113.89382-1-ndesaulniers@google.com
Fixes: 5f074f3e19 ("lib/string.c: implement a basic bcmp")
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Alexandru Ardelean <alexandru.ardelean@analog.com>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nick Desaulniers 2020-12-15 20:43:40 -08:00 committed by Linus Torvalds
parent 2f78788b55
commit ff72daa371
1 changed files with 0 additions and 4 deletions
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4
lib/string.c
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@ -85,7 +85,6 @@ EXPORT_SYMBOL(strcasecmp);
* @dest: Where to copy the string to
* @src: Where to copy the string from
*/
#undef strcpy
char *strcpy(char *dest, const char *src)
{
char *tmp = dest;
@ -302,7 +301,6 @@ EXPORT_SYMBOL(stpcpy);
* @dest: The string to be appended to
* @src: The string to append to it
*/
#undef strcat
char *strcat(char *dest, const char *src)
{
char *tmp = dest;
@ -378,7 +376,6 @@ EXPORT_SYMBOL(strlcat);
* @cs: One string
* @ct: Another string
*/
#undef strcmp
int strcmp(const char *cs, const char *ct)
{
unsigned char c1, c2;
@ -958,7 +955,6 @@ EXPORT_SYMBOL(memcmp);
* while this particular implementation is a simple (tail) call to memcmp, do
* not rely on anything but whether the return value is zero or non-zero.
*/
#undef bcmp
int bcmp(const void *a, const void *b, size_t len)
{
return memcmp(a, b, len);