diff options
Diffstat (limited to 'lib/test_bitmap.c')
| -rw-r--r-- | lib/test_bitmap.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c index 187f5b2db4cf..65f22c2578b0 100644 --- a/lib/test_bitmap.c +++ b/lib/test_bitmap.c @@ -330,6 +330,29 @@ static void __init test_copy(void) expect_eq_pbl("0-108,128-1023", bmap2, 1024); } +static void __init test_bitmap_region(void) +{ + int pos, order; + + DECLARE_BITMAP(bmap, 1000); + + bitmap_zero(bmap, 1000); + + for (order = 0; order < 10; order++) { + pos = bitmap_find_free_region(bmap, 1000, order); + if (order == 0) + expect_eq_uint(pos, 0); + else + expect_eq_uint(pos, order < 9 ? BIT(order) : -ENOMEM); + } + + bitmap_release_region(bmap, 0, 0); + for (order = 1; order < 9; order++) + bitmap_release_region(bmap, BIT(order), order); + + expect_eq_uint(bitmap_weight(bmap, 1000), 0); +} + #define EXP2_IN_BITS (sizeof(exp2) * 8) static void __init test_replace(void) @@ -1161,6 +1184,10 @@ static void __init test_bitmap_print_buf(void) } } +/* + * FIXME: Clang breaks compile-time evaluations when KASAN and GCOV are enabled. + * To workaround it, GCOV is force-disabled in Makefile for this configuration. + */ static void __init test_bitmap_const_eval(void) { DECLARE_BITMAP(bitmap, BITS_PER_LONG); @@ -1186,11 +1213,7 @@ static void __init test_bitmap_const_eval(void) * the compiler is fixed. */ bitmap_clear(bitmap, 0, BITS_PER_LONG); -#if defined(__s390__) && defined(__clang__) - if (!const_test_bit(7, bitmap)) -#else if (!test_bit(7, bitmap)) -#endif bitmap_set(bitmap, 5, 2); /* Equals to `unsigned long bitopvar = BIT(20)` */ @@ -1227,6 +1250,7 @@ static void __init selftest(void) test_zero_clear(); test_fill_set(); test_copy(); + test_bitmap_region(); test_replace(); test_bitmap_arr32(); test_bitmap_arr64(); |