diff options
Diffstat (limited to 'tools/testing/radix-tree/linux/bitops/ffz.h')
| -rw-r--r-- | tools/testing/radix-tree/linux/bitops/ffz.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/radix-tree/linux/bitops/ffz.h b/tools/testing/radix-tree/linux/bitops/ffz.h new file mode 100644 index 000000000000..6744bd4cdf46 --- /dev/null +++ b/tools/testing/radix-tree/linux/bitops/ffz.h @@ -0,0 +1,12 @@ +#ifndef _ASM_GENERIC_BITOPS_FFZ_H_ +#define _ASM_GENERIC_BITOPS_FFZ_H_ + +/* + * ffz - find first zero in word. + * @word: The word to search + * + * Undefined if no zero exists, so code should check against ~0UL first. + */ +#define ffz(x) __ffs(~(x)) + +#endif /* _ASM_GENERIC_BITOPS_FFZ_H_ */ |