From 84be0ffc9043f7c56044294eb775a2200452c76d Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 25 Jun 2014 14:57:36 +1000 Subject: libxfs: move header files Move all the header files that are shared with userspace into libxfs. This is done as one big chunk simpy to get it done quickly. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_bit.h | 87 -------------------------------------------------------- 1 file changed, 87 deletions(-) delete mode 100644 fs/xfs/xfs_bit.h (limited to 'fs/xfs/xfs_bit.h') diff --git a/fs/xfs/xfs_bit.h b/fs/xfs/xfs_bit.h deleted file mode 100644 index e1649c0..0000000 --- a/fs/xfs/xfs_bit.h +++ /dev/null @@ -1,87 +0,0 @@ -/* - * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_BIT_H__ -#define __XFS_BIT_H__ - -/* - * XFS bit manipulation routines. - */ - -/* - * masks with n high/low bits set, 64-bit values - */ -static inline __uint64_t xfs_mask64hi(int n) -{ - return (__uint64_t)-1 << (64 - (n)); -} -static inline __uint32_t xfs_mask32lo(int n) -{ - return ((__uint32_t)1 << (n)) - 1; -} -static inline __uint64_t xfs_mask64lo(int n) -{ - return ((__uint64_t)1 << (n)) - 1; -} - -/* Get high bit set out of 32-bit argument, -1 if none set */ -static inline int xfs_highbit32(__uint32_t v) -{ - return fls(v) - 1; -} - -/* Get high bit set out of 64-bit argument, -1 if none set */ -static inline int xfs_highbit64(__uint64_t v) -{ - return fls64(v) - 1; -} - -/* Get low bit set out of 32-bit argument, -1 if none set */ -static inline int xfs_lowbit32(__uint32_t v) -{ - return ffs(v) - 1; -} - -/* Get low bit set out of 64-bit argument, -1 if none set */ -static inline int xfs_lowbit64(__uint64_t v) -{ - __uint32_t w = (__uint32_t)v; - int n = 0; - - if (w) { /* lower bits */ - n = ffs(w); - } else { /* upper bits */ - w = (__uint32_t)(v >> 32); - if (w) { - n = ffs(w); - if (n) - n += 32; - } - } - return n - 1; -} - -/* Return whether bitmap is empty (1 == empty) */ -extern int xfs_bitmap_empty(uint *map, uint size); - -/* Count continuous one bits in map starting with start_bit */ -extern int xfs_contig_bits(uint *map, uint size, uint start_bit); - -/* Find next set bit in map */ -extern int xfs_next_bit(uint *map, uint size, uint start_bit); - -#endif /* __XFS_BIT_H__ */ -- cgit v1.1