WebSVN – Kolibri OS – Diff – /drivers/include/linux/bitmap.h

  * bitmap_shift_left(dst, src, n, nbits)	*dst = *src << n
  * bitmap_remap(dst, src, old, new, nbits)	*dst = map(old, new)(src)
  * bitmap_bitremap(oldbit, old, new, nbits)	newbit = map(old, new)(oldbit)
  * bitmap_onto(dst, orig, relmap, nbits)	*dst = orig relative to relmap
  * bitmap_fold(dst, orig, sz, nbits)		dst bits = orig bits mod sz
- * bitmap_scnprintf(buf, len, src, nbits)	Print bitmap src to buf
  * bitmap_parse(buf, buflen, dst, nbits)	Parse bitmap dst from kernel buf
  * bitmap_parse_user(ubuf, ulen, dst, nbits)	Parse bitmap dst from user buf
- * bitmap_scnlistprintf(buf, len, src, nbits)	Print bitmap src as list to buf
  * bitmap_parselist(buf, dst, nbits)		Parse bitmap dst from kernel buf
  * bitmap_parselist_user(buf, dst, nbits)	Parse bitmap dst from user buf
  * bitmap_find_free_region(bitmap, bits, order)	Find and allocate bit region
  * bitmap_release_region(bitmap, pos, order)	Free specified bit region
  * bitmap_allocate_region(bitmap, pos, order)	Allocate specified bit region
- * bitmap_print_to_pagebuf(list, buf, mask, nbits) Print bitmap src as list/hex
  */
 /*
  * Also the following operations in asm/bitops.h apply to bitmaps.
 extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits);
 extern int __bitmap_equal(const unsigned long *bitmap1,
 			  const unsigned long *bitmap2, unsigned int nbits);
 extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
 			unsigned int nbits);
-extern void __bitmap_shift_right(unsigned long *dst,
+extern void __bitmap_shift_right(unsigned long *dst, const unsigned long *src,
-                        const unsigned long *src, int shift, int bits);
+				unsigned int shift, unsigned int nbits);
-extern void __bitmap_shift_left(unsigned long *dst,
+extern void __bitmap_shift_left(unsigned long *dst, const unsigned long *src,
-                        const unsigned long *src, int shift, int bits);
+				unsigned int shift, unsigned int nbits);
 extern int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
 			const unsigned long *bitmap2, unsigned int nbits);
 extern void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
 			const unsigned long *bitmap2, unsigned int nbits);
 extern void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
+{
 	return bitmap_find_next_zero_area_off(map, size, start, nr,
 					      align_mask, 0);
+}
-extern int bitmap_scnprintf(char *buf, unsigned int len,
 			const unsigned long *src, int nbits);
 extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user,
 			unsigned long *dst, int nbits);
 extern int bitmap_parse_user(const char __user *ubuf, unsigned int ulen,
-			unsigned long *dst, int nbits);
-extern int bitmap_scnlistprintf(char *buf, unsigned int len,
-			const unsigned long *src, int nbits);
+			unsigned long *dst, int nbits);
 extern int bitmap_parselist(const char *buf, unsigned long *maskp,
 			int nmaskbits);
 extern int bitmap_parselist_user(const char __user *ubuf, unsigned int ulen,
 			unsigned long *dst, int nbits);
 extern void bitmap_remap(unsigned long *dst, const unsigned long *src,
-		const unsigned long *old, const unsigned long *new, int bits);
+		const unsigned long *old, const unsigned long *new, unsigned int nbits);
 extern int bitmap_bitremap(int oldbit,
 		const unsigned long *old, const unsigned long *new, int bits);
 extern void bitmap_onto(unsigned long *dst, const unsigned long *orig,
-		const unsigned long *relmap, int bits);
+		const unsigned long *relmap, unsigned int bits);
 extern void bitmap_fold(unsigned long *dst, const unsigned long *orig,
-		int sz, int bits);
+		unsigned int sz, unsigned int nbits);
 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);
-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
-extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits);
+#endif
-extern int bitmap_ord_to_pos(const unsigned long *bitmap, int n, int bits);
+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);
-#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) % BITS_PER_LONG))
-#define BITMAP_LAST_WORD_MASK(nbits)					\
-(									\
-	((nbits) % BITS_PER_LONG) ?					\
-		(1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL		\
+#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
 #define BITMAP_LAST_WORD_MASK(nbits) (~0UL >> (-(nbits) & (BITS_PER_LONG - 1)))
 #define small_const_nbits(nbits) \
 	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
-static inline void bitmap_zero(unsigned long *dst, int nbits)
+static inline void bitmap_zero(unsigned long *dst, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		*dst = 0UL;
 	else {
-		int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
+		unsigned int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
 		memset(dst, 0, len);
 	}
+}
-static inline void bitmap_fill(unsigned long *dst, int nbits)
+static inline void bitmap_fill(unsigned long *dst, unsigned int nbits)
+{
-	size_t nlongs = BITS_TO_LONGS(nbits);
+	unsigned int nlongs = BITS_TO_LONGS(nbits);
 	if (!small_const_nbits(nbits)) {
-		int len = (nlongs - 1) * sizeof(unsigned long);
+		unsigned int len = (nlongs - 1) * sizeof(unsigned long);
 		memset(dst, 0xff,  len);
+	}
 	dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits);
+}
 static inline void bitmap_copy(unsigned long *dst, const unsigned long *src,
-			int nbits)
+			unsigned int nbits)
+{
 	if (small_const_nbits(nbits))
 		*dst = *src;
 static inline int bitmap_empty(const unsigned long *src, unsigned nbits)
+{
 	if (small_const_nbits(nbits))
 		return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
-	else
-		return __bitmap_empty(src, nbits);
+	return find_first_bit(src, nbits) == nbits;
+}
 static inline int bitmap_full(const unsigned long *src, unsigned int nbits)
+{
 	if (small_const_nbits(nbits))
 		return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
 	else
-		return __bitmap_full(src, nbits);
+	return find_first_zero_bit(src, nbits) == nbits;
+}
-static inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
+static __always_inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
+{
 	if (small_const_nbits(nbits))
 		return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits));
 	return __bitmap_weight(src, nbits);
+}
-static inline void bitmap_shift_right(unsigned long *dst,
+static inline void bitmap_shift_right(unsigned long *dst, const unsigned long *src,
-			const unsigned long *src, int n, int nbits)
+				unsigned int shift, int nbits)
 {
 	if (small_const_nbits(nbits))
-		*dst = (*src & BITMAP_LAST_WORD_MASK(nbits)) >> n;
+		*dst = (*src & BITMAP_LAST_WORD_MASK(nbits)) >> shift;
 	else
-		__bitmap_shift_right(dst, src, n, nbits);
+		__bitmap_shift_right(dst, src, shift, nbits);
+}
-static inline void bitmap_shift_left(unsigned long *dst,
+static inline void bitmap_shift_left(unsigned long *dst, const unsigned long *src,
-			const unsigned long *src, int n, int nbits)
+				unsigned int shift, unsigned int nbits)
+{
 	if (small_const_nbits(nbits))
-		*dst = (*src << n) & BITMAP_LAST_WORD_MASK(nbits);
+		*dst = (*src << shift) & BITMAP_LAST_WORD_MASK(nbits);
 	else

Subversion Repositories Kolibri OS

(root)/drivers/include/linux/bitmap.h – Rev 5270 → 6082