Add basic functionality test for new API. Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx> --- lib/test_bitmap.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c index 65f22c2578b0..277e1ca9fd28 100644 --- a/lib/test_bitmap.c +++ b/lib/test_bitmap.c @@ -221,6 +221,65 @@ static void __init test_zero_clear(void) expect_eq_pbl("", bmap, 1024); } +static void __init test_find_and_bit(void) +{ + unsigned long w, w_part, bit, cnt = 0; + DECLARE_BITMAP(bmap, EXP1_IN_BITS); + + /* + * Test find_and_clear{_next}_bit() and corresponding + * iterators + */ + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + + for_each_test_and_clear_bit(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(w, cnt); + expect_eq_uint(0, bitmap_weight(bmap, EXP1_IN_BITS)); + + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + w_part = bitmap_weight(bmap, EXP1_IN_BITS / 3); + + cnt = 0; + bit = EXP1_IN_BITS / 3; + for_each_test_and_clear_bit_from(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(bitmap_weight(bmap, EXP1_IN_BITS), bitmap_weight(bmap, EXP1_IN_BITS / 3)); + expect_eq_uint(w_part, bitmap_weight(bmap, EXP1_IN_BITS)); + expect_eq_uint(w - w_part, cnt); + + /* + * Test find_and_set{_next}_bit() and corresponding + * iterators + */ + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + cnt = 0; + + for_each_test_and_set_bit(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(EXP1_IN_BITS - w, cnt); + expect_eq_uint(EXP1_IN_BITS, bitmap_weight(bmap, EXP1_IN_BITS)); + + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + w_part = bitmap_weight(bmap, EXP1_IN_BITS / 3); + cnt = 0; + + bit = EXP1_IN_BITS / 3; + for_each_test_and_set_bit_from(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(EXP1_IN_BITS - bitmap_weight(bmap, EXP1_IN_BITS), + EXP1_IN_BITS / 3 - bitmap_weight(bmap, EXP1_IN_BITS / 3)); + expect_eq_uint(EXP1_IN_BITS * 2 / 3 - (w - w_part), cnt); +} + static void __init test_find_nth_bit(void) { unsigned long b, bit, cnt = 0; @@ -1273,6 +1332,8 @@ static void __init selftest(void) test_for_each_clear_bitrange_from(); test_for_each_set_clump8(); test_for_each_set_bit_wrap(); + + test_find_and_bit(); } KSTM_MODULE_LOADERS(test_bitmap); -- 2.40.1