diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2015-06-11 12:52:14 +0800 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2015-06-11 12:52:14 +0800 |
| commit | 111b23cf895b5cbcdc1b2c6580be1bb78a577d05 (patch) | |
| tree | 89b840115ccd753216ba0b26e587e52699b99310 /lib/find_last_bit.c | |
| parent | 6a6bcf08e5d1834447655a762dfaf552b675cc54 (diff) | |
| parent | 53daf9383f34d7bf61358a37449fb4d59fbdafc2 (diff) | |
Merge branches 'release' and 'thermal-soc' of .git into next
Diffstat (limited to 'lib/find_last_bit.c')
| -rw-r--r-- | lib/find_last_bit.c | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/lib/find_last_bit.c b/lib/find_last_bit.c deleted file mode 100644 index 3e3be40c6a6e..000000000000 --- a/lib/find_last_bit.c +++ /dev/null @@ -1,41 +0,0 @@ -/* find_last_bit.c: fallback find next bit implementation - * - * Copyright (C) 2008 IBM Corporation - * Written by Rusty Russell <rusty@rustcorp.com.au> - * (Inspired by David Howell's find_next_bit implementation) - * - * Rewritten by Yury Norov <yury.norov@gmail.com> to decrease - * size and improve performance, 2015. - * - * 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; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/bitops.h> -#include <linux/bitmap.h> -#include <linux/export.h> -#include <linux/kernel.h> - -#ifndef find_last_bit - -unsigned long find_last_bit(const unsigned long *addr, unsigned long size) -{ - if (size) { - unsigned long val = BITMAP_LAST_WORD_MASK(size); - unsigned long idx = (size-1) / BITS_PER_LONG; - - do { - val &= addr[idx]; - if (val) - return idx * BITS_PER_LONG + __fls(val); - - val = ~0ul; - } while (idx--); - } - return size; -} -EXPORT_SYMBOL(find_last_bit); - -#endif |