move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 0 insertions, 146 deletions

diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
deleted file mode 100644
index db2dfdb2..00000000
--- a/include/linux/bitmap.h
+++ /dev/null
@@ -1,146 +0,0 @@
-#ifndef _PERF_BITOPS_H
-#define _PERF_BITOPS_H
-
-#include <string.h>
-#include <linux/bitops.h>
-#include <stdlib.h>
-
-#define DECLARE_BITMAP(name,bits) \
-	unsigned long name[BITS_TO_LONGS(bits)]
-
-void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
-		 const unsigned long *bitmap2, int bits);
-
-#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
-
-#define BITMAP_LAST_WORD_MASK(nbits)					\
-(									\
-	((nbits) % BITS_PER_LONG) ?					\
-		(1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL		\
-)
-
-#define small_const_nbits(nbits) \
-	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
-
-static inline int __bitmap_weight(const unsigned long *bitmap, int bits)
-{
-	int k, w = 0, lim = bits/BITS_PER_LONG;
-
-	for (k = 0; k < lim; k++)
-		w += hweight_long(bitmap[k]);
-
-	if (bits % BITS_PER_LONG)
-		w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits));
-
-	return w;
-} 
-
-static inline int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
-		 const unsigned long *bitmap2, unsigned int bits)
-{
-	unsigned int k;
-	unsigned int lim = bits/BITS_PER_LONG;
-	unsigned long result = 0;
-
-	for (k = 0; k < lim; k++)
-		result |= (dst[k] = bitmap1[k] & bitmap2[k]);
-	if (bits % BITS_PER_LONG)
-		result |= (dst[k] = bitmap1[k] & bitmap2[k] &
-			   BITMAP_LAST_WORD_MASK(bits));
-	return result != 0;
-}
-
-static inline void bitmap_complement(unsigned long *dst, const unsigned long *src,
-				     unsigned int bits)
-{
-	unsigned int k, lim = bits/BITS_PER_LONG;
-	for (k = 0; k < lim; ++k)
-		dst[k] = ~src[k];
-
-	if (bits % BITS_PER_LONG)
-		dst[k] = ~src[k];
-}
-
-static inline void bitmap_zero(unsigned long *dst, int nbits)
-{
-	memset(dst, 0, BITS_TO_LONGS(nbits) * sizeof(unsigned long));
-}
-
-static inline int bitmap_weight(const unsigned long *src, 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_or(unsigned long *dst, const unsigned long *src1,
-			     const unsigned long *src2, int nbits)
-{
-	if (small_const_nbits(nbits))
-		*dst = *src1 | *src2;
-	else
-		__bitmap_or(dst, src1, src2, nbits);
-}
-
-static inline unsigned long *bitmap_alloc(int nbits)
-{
-	return calloc(1, BITS_TO_LONGS(nbits) * sizeof(unsigned long));
-}
-
-static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
-			     const unsigned long *src2, unsigned int nbits)
-{
-	if (small_const_nbits(nbits))
-		return (*dst = *src1 & *src2 & BITMAP_LAST_WORD_MASK(nbits)) != 0;
-	return __bitmap_and(dst, src1, src2, nbits);
-}
-
-static inline unsigned long _find_next_bit(const unsigned long *addr,
-		unsigned long nbits, unsigned long start, unsigned long invert)
-{
-	unsigned long tmp;
-
-	if (!nbits || start >= nbits)
-		return nbits;
-
-	tmp = addr[start / BITS_PER_LONG] ^ invert;
-
-	/* Handle 1st word. */
-	tmp &= BITMAP_FIRST_WORD_MASK(start);
-	start = round_down(start, BITS_PER_LONG);
-
-	while (!tmp) {
-		start += BITS_PER_LONG;
-		if (start >= nbits)
-			return nbits;
-
-		tmp = addr[start / BITS_PER_LONG] ^ invert;
-	}
-
-	return min(start + __ffs(tmp), nbits);
-}
-
-static inline unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
-			    unsigned long offset)
-{
-	return _find_next_bit(addr, size, offset, 0UL);
-}
-
-static inline unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
-				 unsigned long offset)
-{
-	return _find_next_bit(addr, size, offset, ~0UL);
-}
-
-#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
-#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
-
-static inline bool bitmap_empty(const unsigned long *src, unsigned nbits)
-{
-	if (small_const_nbits(nbits))
-		return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
-
-	return find_first_bit(src, nbits) == nbits;
-}
-
-#endif /* _PERF_BITOPS_H */