From: Rasmus Villemoes Date: Fri, 13 Feb 2015 22:36:00 +0000 (-0800) Subject: lib/bitmap.c: elide bitmap_copy_le on little-endian X-Git-Tag: firefly_0821_release~176^2~2328^2~106 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e8f24278329dc31b3b8223c83a5465c9df153d9d;p=firefly-linux-kernel-4.4.55.git lib/bitmap.c: elide bitmap_copy_le on little-endian On little-endian, there's no reason to have an extra, presumably less efficient, way of copying a bitmap. Signed-off-by: Rasmus Villemoes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 334fe32d8f0e..cffc89c23c02 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -170,7 +170,11 @@ extern void bitmap_fold(unsigned long *dst, const unsigned long *orig, extern int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order); extern void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order); extern int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order); +#ifdef __BIG_ENDIAN extern void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int nbits); +#else +#define bitmap_copy_le bitmap_copy +#endif extern unsigned int bitmap_ord_to_pos(const unsigned long *bitmap, unsigned int ord, unsigned int nbits); extern int bitmap_print_to_pagebuf(bool list, char *buf, const unsigned long *maskp, int nmaskbits); diff --git a/lib/bitmap.c b/lib/bitmap.c index e4ac20bec76c..d2cd50cd4f5d 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -1191,6 +1191,7 @@ EXPORT_SYMBOL(bitmap_allocate_region); * * Require nbits % BITS_PER_LONG == 0. */ +#ifdef __BIG_ENDIAN void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int nbits) { unsigned int i; @@ -1203,3 +1204,4 @@ void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int n } } EXPORT_SYMBOL(bitmap_copy_le); +#endif