Re: [PATCH v1] lib/test_bitmap: Make use of EXP2_IN_BITS

From: Alex Shi
Date: Tue Jan 21 2020 - 21:06:19 EST




在 2020/1/21 下午11:18, Andy Shevchenko 写道:
> The commit 30544ed5de43 ("lib/bitmap: introduce bitmap_replace() helper")
> introduced some new test cases to the test_bitmap.c module. Among these
> it also introduced an (unused) definition. Let's make use of EXP2_IN_BITS.
>
> Reported-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> ---
> lib/test_bitmap.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
> index 61ed71c1daba..6b13150667f5 100644
> --- a/lib/test_bitmap.c
> +++ b/lib/test_bitmap.c
> @@ -278,6 +278,8 @@ static void __init test_replace(void)
> unsigned int nlongs = DIV_ROUND_UP(nbits, BITS_PER_LONG);
> DECLARE_BITMAP(bmap, 1024);
>
> + BUILD_BUG_ON(EXP2_IN_BITS < nbits * 2);
> +
> bitmap_zero(bmap, 1024);
> bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits);
> expect_eq_bitmap(bmap, exp3_0_1, nbits);
>

It looks nice. :)

Reviewed-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>