Commit 2c523550 authored by Yury Norov's avatar Yury Norov
Browse files

lib/bitmap: add test for bitmap_{from,to}_arr64 



Test newly added bitmap_{from,to}_arr64() functions similarly to
already existing bitmap_{from,to}_arr32() tests.

CC: Alexander Gordeev <agordeev@linux.ibm.com>
CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
CC: Christian Borntraeger <borntraeger@linux.ibm.com>
CC: Claudio Imbrenda <imbrenda@linux.ibm.com>
CC: David Hildenbrand <david@redhat.com>
CC: Heiko Carstens <hca@linux.ibm.com>
CC: Janosch Frank <frankja@linux.ibm.com>
CC: Rasmus Villemoes <linux@rasmusvillemoes.dk>
CC: Sven Schnelle <svens@linux.ibm.com>
CC: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarYury Norov <yury.norov@gmail.com>
parent 0a97953f

lib/test_bitmap.c

+25 −0
Original line number Diff line number Diff line
@@ -585,6 +585,30 @@ static void __init test_bitmap_arr32(void) 
	}

}



static void __init test_bitmap_arr64(void)

{

	unsigned int nbits, next_bit;

	u64 arr[EXP1_IN_BITS / 64];

	DECLARE_BITMAP(bmap2, EXP1_IN_BITS);



	memset(arr, 0xa5, sizeof(arr));



	for (nbits = 0; nbits < EXP1_IN_BITS; ++nbits) {

		memset(bmap2, 0xff, sizeof(arr));

		bitmap_to_arr64(arr, exp1, nbits);

		bitmap_from_arr64(bmap2, arr, nbits);

		expect_eq_bitmap(bmap2, exp1, nbits);



		next_bit = find_next_bit(bmap2, round_up(nbits, BITS_PER_LONG), nbits);

		if (next_bit < round_up(nbits, BITS_PER_LONG))

			pr_err("bitmap_copy_arr64(nbits == %d:"

				" tail is not safely cleared: %d\n", nbits, next_bit);



		if (nbits < EXP1_IN_BITS - 64)

			expect_eq_uint(arr[DIV_ROUND_UP(nbits, 64)], 0xa5a5a5a5);

	}

}



static void noinline __init test_mem_optimisations(void)

{

	DECLARE_BITMAP(bmap1, 1024);
@@ -852,6 +876,7 @@ static void __init selftest(void) 
	test_copy();

	test_replace();

	test_bitmap_arr32();

	test_bitmap_arr64();

	test_bitmap_parse();

	test_bitmap_parselist();

	test_bitmap_printlist();