On Wed, Feb 13, 2019 at 02:54:43AM +0800, Xiang Xiao wrote: > Here is the detailed description for memrchr: > > void *memrchr(const void *s, int c, size_t n); > > The memrchr() function is like the memchr() function, except > that it searches backward from the end of the n bytes pointed > to by s instead of forward from the beginning. > > The memrchr() functions return a pointer to the matching byte > or NULL if the character does not occur in the given memory > area. > > Signed-off-by: Xiang Xiao <[email protected]> > --- > include/linux/string.h | 1 + > lib/string.c | 21 +++++++++++++++++++++ > 2 files changed, 22 insertions(+) > > diff --git a/include/linux/string.h b/include/linux/string.h > index 7927b87..f380f4b 100644 > --- a/include/linux/string.h > +++ b/include/linux/string.h > @@ -167,6 +167,7 @@ static inline void memcpy_flushcache(void *dst, const > void *src, size_t cnt) > memcpy(dst, src, cnt); > } > #endif > +void *memrchr(const void *s, int c, size_t n); > void *memchr_inv(const void *s, int c, size_t n); > char *strreplace(char *s, char old, char new);
Also, if you really need this, why not also provide the arch-specific versions as well? thanks, greg k-h
