[thirdparty/linux.git] / lib / test_bitmap.c

/*
 * Test cases for printf facility.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/bitmap.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/string.h>

#include "../tools/testing/selftests/kselftest_module.h"

static unsigned total_tests __initdata;
static unsigned failed_tests __initdata;

static char pbl_buffer[PAGE_SIZE] __initdata;


static bool __init
__check_eq_uint(const char *srcfile, unsigned int line,
		const unsigned int exp_uint, unsigned int x)
{
	if (exp_uint != x) {
		pr_err("[%s:%u] expected %u, got %u\n",
			srcfile, line, exp_uint, x);
		return false;
	}
	return true;
}


static bool __init
__check_eq_bitmap(const char *srcfile, unsigned int line,
		  const unsigned long *exp_bmap, const unsigned long *bmap,
		  unsigned int nbits)
{
	if (!bitmap_equal(exp_bmap, bmap, nbits)) {
		pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n",
			srcfile, line,
			nbits, exp_bmap, nbits, bmap);
		return false;
	}
	return true;
}

static bool __init
__check_eq_pbl(const char *srcfile, unsigned int line,
	       const char *expected_pbl,
	       const unsigned long *bitmap, unsigned int nbits)
{
	snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap);
	if (strcmp(expected_pbl, pbl_buffer)) {
		pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n",
			srcfile, line,
			expected_pbl, pbl_buffer);
		return false;
	}
	return true;
}

static bool __init
__check_eq_u32_array(const char *srcfile, unsigned int line,
		     const u32 *exp_arr, unsigned int exp_len,
		     const u32 *arr, unsigned int len) __used;
static bool __init
__check_eq_u32_array(const char *srcfile, unsigned int line,
		     const u32 *exp_arr, unsigned int exp_len,
		     const u32 *arr, unsigned int len)
{
	if (exp_len != len) {
		pr_warn("[%s:%u] array length differ: expected %u, got %u\n",
			srcfile, line,
			exp_len, len);
		return false;
	}

	if (memcmp(exp_arr, arr, len*sizeof(*arr))) {
		pr_warn("[%s:%u] array contents differ\n", srcfile, line);
		print_hex_dump(KERN_WARNING, "  exp:  ", DUMP_PREFIX_OFFSET,
			       32, 4, exp_arr, exp_len*sizeof(*exp_arr), false);
		print_hex_dump(KERN_WARNING, "  got:  ", DUMP_PREFIX_OFFSET,
			       32, 4, arr, len*sizeof(*arr), false);
		return false;
	}

	return true;
}

#define __expect_eq(suffix, ...)					\
	({								\
		int result = 0;						\
		total_tests++;						\
		if (!__check_eq_ ## suffix(__FILE__, __LINE__,		\
					   ##__VA_ARGS__)) {		\
			failed_tests++;					\
			result = 1;					\
		}							\
		result;							\
	})

#define expect_eq_uint(...)		__expect_eq(uint, ##__VA_ARGS__)
#define expect_eq_bitmap(...)		__expect_eq(bitmap, ##__VA_ARGS__)
#define expect_eq_pbl(...)		__expect_eq(pbl, ##__VA_ARGS__)
#define expect_eq_u32_array(...)	__expect_eq(u32_array, ##__VA_ARGS__)

static void __init test_zero_clear(void)
{
	DECLARE_BITMAP(bmap, 1024);

	/* Known way to set all bits */
	memset(bmap, 0xff, 128);

	expect_eq_pbl("0-22", bmap, 23);
	expect_eq_pbl("0-1023", bmap, 1024);

	/* single-word bitmaps */
	bitmap_clear(bmap, 0, 9);
	expect_eq_pbl("9-1023", bmap, 1024);

	bitmap_zero(bmap, 35);
	expect_eq_pbl("64-1023", bmap, 1024);

	/* cross boundaries operations */
	bitmap_clear(bmap, 79, 19);
	expect_eq_pbl("64-78,98-1023", bmap, 1024);

	bitmap_zero(bmap, 115);
	expect_eq_pbl("128-1023", bmap, 1024);

	/* Zeroing entire area */
	bitmap_zero(bmap, 1024);
	expect_eq_pbl("", bmap, 1024);
}

static void __init test_fill_set(void)
{
	DECLARE_BITMAP(bmap, 1024);

	/* Known way to clear all bits */
	memset(bmap, 0x00, 128);

	expect_eq_pbl("", bmap, 23);
	expect_eq_pbl("", bmap, 1024);

	/* single-word bitmaps */
	bitmap_set(bmap, 0, 9);
	expect_eq_pbl("0-8", bmap, 1024);

	bitmap_fill(bmap, 35);
	expect_eq_pbl("0-63", bmap, 1024);

	/* cross boundaries operations */
	bitmap_set(bmap, 79, 19);
	expect_eq_pbl("0-63,79-97", bmap, 1024);

	bitmap_fill(bmap, 115);
	expect_eq_pbl("0-127", bmap, 1024);

	/* Zeroing entire area */
	bitmap_fill(bmap, 1024);
	expect_eq_pbl("0-1023", bmap, 1024);
}

static void __init test_copy(void)
{
	DECLARE_BITMAP(bmap1, 1024);
	DECLARE_BITMAP(bmap2, 1024);

	bitmap_zero(bmap1, 1024);
	bitmap_zero(bmap2, 1024);

	/* single-word bitmaps */
	bitmap_set(bmap1, 0, 19);
	bitmap_copy(bmap2, bmap1, 23);
	expect_eq_pbl("0-18", bmap2, 1024);

	bitmap_set(bmap2, 0, 23);
	bitmap_copy(bmap2, bmap1, 23);
	expect_eq_pbl("0-18", bmap2, 1024);

	/* multi-word bitmaps */
	bitmap_set(bmap1, 0, 109);
	bitmap_copy(bmap2, bmap1, 1024);
	expect_eq_pbl("0-108", bmap2, 1024);

	bitmap_fill(bmap2, 1024);
	bitmap_copy(bmap2, bmap1, 1024);
	expect_eq_pbl("0-108", bmap2, 1024);

	/* the following tests assume a 32- or 64-bit arch (even 128b
	 * if we care)
	 */

	bitmap_fill(bmap2, 1024);
	bitmap_copy(bmap2, bmap1, 109);  /* ... but 0-padded til word length */
	expect_eq_pbl("0-108,128-1023", bmap2, 1024);

	bitmap_fill(bmap2, 1024);
	bitmap_copy(bmap2, bmap1, 97);  /* ... but aligned on word length */
	expect_eq_pbl("0-108,128-1023", bmap2, 1024);
}

#define PARSE_TIME 0x1

struct test_bitmap_parselist{
	const int errno;
	const char *in;
	const unsigned long *expected;
	const int nbits;
	const int flags;
};

static const unsigned long exp[] __initconst = {
	BITMAP_FROM_U64(1),
	BITMAP_FROM_U64(2),
	BITMAP_FROM_U64(0x0000ffff),
	BITMAP_FROM_U64(0xffff0000),
	BITMAP_FROM_U64(0x55555555),
	BITMAP_FROM_U64(0xaaaaaaaa),
	BITMAP_FROM_U64(0x11111111),
	BITMAP_FROM_U64(0x22222222),
	BITMAP_FROM_U64(0xffffffff),
	BITMAP_FROM_U64(0xfffffffe),
	BITMAP_FROM_U64(0x3333333311111111ULL),
	BITMAP_FROM_U64(0xffffffff77777777ULL)
};

static const unsigned long exp2[] __initconst = {
	BITMAP_FROM_U64(0x3333333311111111ULL),
	BITMAP_FROM_U64(0xffffffff77777777ULL)
};

static const struct test_bitmap_parselist parselist_tests[] __initconst = {
#define step (sizeof(u64) / sizeof(unsigned long))

	{0, "0",			&exp[0], 8, 0},
	{0, "1",			&exp[1 * step], 8, 0},
	{0, "0-15",			&exp[2 * step], 32, 0},
	{0, "16-31",			&exp[3 * step], 32, 0},
	{0, "0-31:1/2",			&exp[4 * step], 32, 0},
	{0, "1-31:1/2",			&exp[5 * step], 32, 0},
	{0, "0-31:1/4",			&exp[6 * step], 32, 0},
	{0, "1-31:1/4",			&exp[7 * step], 32, 0},
	{0, "0-31:4/4",			&exp[8 * step], 32, 0},
	{0, "1-31:4/4",			&exp[9 * step], 32, 0},
	{0, "0-31:1/4,32-63:2/4",	&exp[10 * step], 64, 0},
	{0, "0-31:3/4,32-63:4/4",	&exp[11 * step], 64, 0},

	{0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4",	exp2, 128, 0},

	{0, "0-2047:128/256", NULL, 2048, PARSE_TIME},

	{-EINVAL, "-1",	NULL, 8, 0},
	{-EINVAL, "-0",	NULL, 8, 0},
	{-EINVAL, "10-1", NULL, 8, 0},
	{-EINVAL, "0-31:", NULL, 8, 0},
	{-EINVAL, "0-31:0", NULL, 8, 0},
	{-EINVAL, "0-31:0/0", NULL, 8, 0},
	{-EINVAL, "0-31:1/0", NULL, 8, 0},
	{-EINVAL, "0-31:10/1", NULL, 8, 0},
};

static void __init test_bitmap_parselist(void)
{
	int i;
	int err;
	ktime_t time;
	DECLARE_BITMAP(bmap, 2048);

	for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) {
#define ptest parselist_tests[i]

		time = ktime_get();
		err = bitmap_parselist(ptest.in, bmap, ptest.nbits);
		time = ktime_get() - time;

		if (err != ptest.errno) {
			pr_err("test %d: input is %s, errno is %d, expected %d\n",
					i, ptest.in, err, ptest.errno);
			continue;
		}

		if (!err && ptest.expected
			 && !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) {
			pr_err("test %d: input is %s, result is 0x%lx, expected 0x%lx\n",
					i, ptest.in, bmap[0], *ptest.expected);
			continue;
		}

		if (ptest.flags & PARSE_TIME)
			pr_err("test %d: input is '%s' OK, Time: %llu\n",
					i, ptest.in, time);
	}
}

#define EXP_BYTES	(sizeof(exp) * 8)

static void __init test_bitmap_arr32(void)
{
	unsigned int nbits, next_bit;
	u32 arr[sizeof(exp) / 4];
	DECLARE_BITMAP(bmap2, EXP_BYTES);

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

	for (nbits = 0; nbits < EXP_BYTES; ++nbits) {
		bitmap_to_arr32(arr, exp, nbits);
		bitmap_from_arr32(bmap2, arr, nbits);
		expect_eq_bitmap(bmap2, exp, 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_arr32(nbits == %d:"
				" tail is not safely cleared: %d\n",
				nbits, next_bit);

		if (nbits < EXP_BYTES - 32)
			expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)],
								0xa5a5a5a5);
	}
}

static void noinline __init test_mem_optimisations(void)
{
	DECLARE_BITMAP(bmap1, 1024);
	DECLARE_BITMAP(bmap2, 1024);
	unsigned int start, nbits;

	for (start = 0; start < 1024; start += 8) {
		for (nbits = 0; nbits < 1024 - start; nbits += 8) {
			memset(bmap1, 0x5a, sizeof(bmap1));
			memset(bmap2, 0x5a, sizeof(bmap2));

			bitmap_set(bmap1, start, nbits);
			__bitmap_set(bmap2, start, nbits);
			if (!bitmap_equal(bmap1, bmap2, 1024)) {
				printk("set not equal %d %d\n", start, nbits);
				failed_tests++;
			}
			if (!__bitmap_equal(bmap1, bmap2, 1024)) {
				printk("set not __equal %d %d\n", start, nbits);
				failed_tests++;
			}

			bitmap_clear(bmap1, start, nbits);
			__bitmap_clear(bmap2, start, nbits);
			if (!bitmap_equal(bmap1, bmap2, 1024)) {
				printk("clear not equal %d %d\n", start, nbits);
				failed_tests++;
			}
			if (!__bitmap_equal(bmap1, bmap2, 1024)) {
				printk("clear not __equal %d %d\n", start,
									nbits);
				failed_tests++;
			}
		}
	}
}

static void __init selftest(void)
{
	test_zero_clear();
	test_fill_set();
	test_copy();
	test_bitmap_arr32();
	test_bitmap_parselist();
	test_mem_optimisations();
}

KSTM_MODULE_LOADERS(test_bitmap);
MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
5fd003f5 DD	1	/*
	2	* Test cases for printf facility.
	3	*/
	4
	5	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	6
	7	#include <linux/bitmap.h>
	8	#include <linux/init.h>
	9	#include <linux/kernel.h>
	10	#include <linux/module.h>
	11	#include <linux/printk.h>
	12	#include <linux/slab.h>
	13	#include <linux/string.h>
	14
6b1a4d5b TH	15	#include "../tools/testing/selftests/kselftest_module.h"
6b1a4d5b TH	16
5fd003f5 DD	17	static unsigned total_tests __initdata;
	18	static unsigned failed_tests __initdata;
	19
	20	static char pbl_buffer[PAGE_SIZE] __initdata;
	21
	22
	23	static bool __init
	24	__check_eq_uint(const char *srcfile, unsigned int line,
	25	const unsigned int exp_uint, unsigned int x)
	26	{
	27	if (exp_uint != x) {
3aa56885	28	pr_err("[%s:%u] expected %u, got %u\n",
5fd003f5 DD	29	srcfile, line, exp_uint, x);
	30	return false;
	31	}
	32	return true;
	33	}
	34
	35
	36	static bool __init
	37	__check_eq_bitmap(const char *srcfile, unsigned int line,
3aa56885 YN	38	const unsigned long exp_bmap, const unsigned long bmap,
3aa56885 YN	39	unsigned int nbits)
5fd003f5	40	{
5fd003f5 DD	41	if (!bitmap_equal(exp_bmap, bmap, nbits)) {
	42	pr_warn("[%s:%u] bitmaps contents differ: expected \"%pbl\", got \"%pbl\"\n",
	43	srcfile, line,
3aa56885	44	nbits, exp_bmap, nbits, bmap);
5fd003f5 DD	45	return false;
	46	}
	47	return true;
	48	}
	49
	50	static bool __init
	51	__check_eq_pbl(const char *srcfile, unsigned int line,
	52	const char *expected_pbl,
	53	const unsigned long *bitmap, unsigned int nbits)
	54	{
	55	snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap);
	56	if (strcmp(expected_pbl, pbl_buffer)) {
	57	pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n",
	58	srcfile, line,
	59	expected_pbl, pbl_buffer);
	60	return false;
	61	}
	62	return true;
	63	}
	64
3aa56885 YN	65	static bool __init
	66	__check_eq_u32_array(const char *srcfile, unsigned int line,
	67	const u32 *exp_arr, unsigned int exp_len,
	68	const u32 *arr, unsigned int len) __used;
5fd003f5 DD	69	static bool __init
	70	__check_eq_u32_array(const char *srcfile, unsigned int line,
	71	const u32 *exp_arr, unsigned int exp_len,
	72	const u32 *arr, unsigned int len)
	73	{
	74	if (exp_len != len) {
	75	pr_warn("[%s:%u] array length differ: expected %u, got %u\n",
	76	srcfile, line,
	77	exp_len, len);
	78	return false;
	79	}
	80
	81	if (memcmp(exp_arr, arr, lensizeof(arr))) {
	82	pr_warn("[%s:%u] array contents differ\n", srcfile, line);
	83	print_hex_dump(KERN_WARNING, " exp: ", DUMP_PREFIX_OFFSET,
	84	32, 4, exp_arr, exp_lensizeof(exp_arr), false);
	85	print_hex_dump(KERN_WARNING, " got: ", DUMP_PREFIX_OFFSET,
	86	32, 4, arr, lensizeof(arr), false);
	87	return false;
	88	}
	89
	90	return true;
	91	}
	92
	93	#define __expect_eq(suffix, ...) \
	94	({ \
	95	int result = 0; \
	96	total_tests++; \
	97	if (!__check_eq_ ## suffix(__FILE__, __LINE__, \
	98	##__VA_ARGS__)) { \
	99	failed_tests++; \
	100	result = 1; \
	101	} \
	102	result; \
	103	})
	104
	105	#define expect_eq_uint(...) __expect_eq(uint, ##__VA_ARGS__)
	106	#define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__)
	107	#define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__)
	108	#define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__)
	109
ee3527bd AS	110	static void __init test_zero_clear(void)
	111	{
	112	DECLARE_BITMAP(bmap, 1024);
	113
	114	/* Known way to set all bits */
	115	memset(bmap, 0xff, 128);
	116
	117	expect_eq_pbl("0-22", bmap, 23);
	118	expect_eq_pbl("0-1023", bmap, 1024);
	119
	120	/* single-word bitmaps */
	121	bitmap_clear(bmap, 0, 9);
	122	expect_eq_pbl("9-1023", bmap, 1024);
	123
	124	bitmap_zero(bmap, 35);
	125	expect_eq_pbl("64-1023", bmap, 1024);
	126
	127	/* cross boundaries operations */
	128	bitmap_clear(bmap, 79, 19);
	129	expect_eq_pbl("64-78,98-1023", bmap, 1024);
	130
	131	bitmap_zero(bmap, 115);
	132	expect_eq_pbl("128-1023", bmap, 1024);
	133
	134	/* Zeroing entire area */
	135	bitmap_zero(bmap, 1024);
	136	expect_eq_pbl("", bmap, 1024);
	137	}
	138
978f369c AS	139	static void __init test_fill_set(void)
	140	{
	141	DECLARE_BITMAP(bmap, 1024);
	142
	143	/* Known way to clear all bits */
	144	memset(bmap, 0x00, 128);
	145
	146	expect_eq_pbl("", bmap, 23);
	147	expect_eq_pbl("", bmap, 1024);
	148
	149	/* single-word bitmaps */
	150	bitmap_set(bmap, 0, 9);
	151	expect_eq_pbl("0-8", bmap, 1024);
	152
	153	bitmap_fill(bmap, 35);
	154	expect_eq_pbl("0-63", bmap, 1024);
	155
	156	/* cross boundaries operations */
	157	bitmap_set(bmap, 79, 19);
	158	expect_eq_pbl("0-63,79-97", bmap, 1024);
	159
	160	bitmap_fill(bmap, 115);
	161	expect_eq_pbl("0-127", bmap, 1024);
	162
	163	/* Zeroing entire area */
	164	bitmap_fill(bmap, 1024);
	165	expect_eq_pbl("0-1023", bmap, 1024);
	166	}
	167
fe81814c	168	static void __init test_copy(void)
5fd003f5 DD	169	{
	170	DECLARE_BITMAP(bmap1, 1024);
	171	DECLARE_BITMAP(bmap2, 1024);
	172
	173	bitmap_zero(bmap1, 1024);
	174	bitmap_zero(bmap2, 1024);
	175
	176	/* single-word bitmaps */
fe81814c	177	bitmap_set(bmap1, 0, 19);
5fd003f5 DD	178	bitmap_copy(bmap2, bmap1, 23);
	179	expect_eq_pbl("0-18", bmap2, 1024);
	180
fe81814c	181	bitmap_set(bmap2, 0, 23);
5fd003f5 DD	182	bitmap_copy(bmap2, bmap1, 23);
	183	expect_eq_pbl("0-18", bmap2, 1024);
	184
5fd003f5	185	/* multi-word bitmaps */
fe81814c	186	bitmap_set(bmap1, 0, 109);
5fd003f5 DD	187	bitmap_copy(bmap2, bmap1, 1024);
	188	expect_eq_pbl("0-108", bmap2, 1024);
	189
	190	bitmap_fill(bmap2, 1024);
5fd003f5 DD	191	bitmap_copy(bmap2, bmap1, 1024);
	192	expect_eq_pbl("0-108", bmap2, 1024);
	193
	194	/* the following tests assume a 32- or 64-bit arch (even 128b
	195	* if we care)
	196	*/
	197
	198	bitmap_fill(bmap2, 1024);
	199	bitmap_copy(bmap2, bmap1, 109); /* ... but 0-padded til word length */
	200	expect_eq_pbl("0-108,128-1023", bmap2, 1024);
	201
	202	bitmap_fill(bmap2, 1024);
	203	bitmap_copy(bmap2, bmap1, 97); /* ... but aligned on word length */
	204	expect_eq_pbl("0-108,128-1023", bmap2, 1024);
5fd003f5 DD	205	}
5fd003f5 DD	206
6df0d464 YN	207	#define PARSE_TIME 0x1
	208
	209	struct test_bitmap_parselist{
	210	const int errno;
	211	const char *in;
	212	const unsigned long *expected;
	213	const int nbits;
	214	const int flags;
	215	};
	216
60ef6900 YN	217	static const unsigned long exp[] __initconst = {
	218	BITMAP_FROM_U64(1),
	219	BITMAP_FROM_U64(2),
	220	BITMAP_FROM_U64(0x0000ffff),
	221	BITMAP_FROM_U64(0xffff0000),
	222	BITMAP_FROM_U64(0x55555555),
	223	BITMAP_FROM_U64(0xaaaaaaaa),
	224	BITMAP_FROM_U64(0x11111111),
	225	BITMAP_FROM_U64(0x22222222),
	226	BITMAP_FROM_U64(0xffffffff),
	227	BITMAP_FROM_U64(0xfffffffe),
8185f570 GU	228	BITMAP_FROM_U64(0x3333333311111111ULL),
8185f570 GU	229	BITMAP_FROM_U64(0xffffffff77777777ULL)
60ef6900 YN	230	};
	231
	232	static const unsigned long exp2[] __initconst = {
8185f570 GU	233	BITMAP_FROM_U64(0x3333333311111111ULL),
8185f570 GU	234	BITMAP_FROM_U64(0xffffffff77777777ULL)
60ef6900	235	};
6df0d464 YN	236
6df0d464 YN	237	static const struct test_bitmap_parselist parselist_tests[] __initconst = {
60ef6900 YN	238	#define step (sizeof(u64) / sizeof(unsigned long))
60ef6900 YN	239
6df0d464	240	{0, "0", &exp[0], 8, 0},
60ef6900 YN	241	{0, "1", &exp[1 * step], 8, 0},
	242	{0, "0-15", &exp[2 * step], 32, 0},
	243	{0, "16-31", &exp[3 * step], 32, 0},
	244	{0, "0-31:1/2", &exp[4 * step], 32, 0},
	245	{0, "1-31:1/2", &exp[5 * step], 32, 0},
	246	{0, "0-31:1/4", &exp[6 * step], 32, 0},
	247	{0, "1-31:1/4", &exp[7 * step], 32, 0},
	248	{0, "0-31:4/4", &exp[8 * step], 32, 0},
	249	{0, "1-31:4/4", &exp[9 * step], 32, 0},
	250	{0, "0-31:1/4,32-63:2/4", &exp[10 * step], 64, 0},
	251	{0, "0-31:3/4,32-63:4/4", &exp[11 * step], 64, 0},
6df0d464 YN	252
	253	{0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4", exp2, 128, 0},
	254
	255	{0, "0-2047:128/256", NULL, 2048, PARSE_TIME},
	256
	257	{-EINVAL, "-1", NULL, 8, 0},
	258	{-EINVAL, "-0", NULL, 8, 0},
	259	{-EINVAL, "10-1", NULL, 8, 0},
8351760f YN	260	{-EINVAL, "0-31:", NULL, 8, 0},
	261	{-EINVAL, "0-31:0", NULL, 8, 0},
	262	{-EINVAL, "0-31:0/0", NULL, 8, 0},
	263	{-EINVAL, "0-31:1/0", NULL, 8, 0},
6df0d464 YN	264	{-EINVAL, "0-31:10/1", NULL, 8, 0},
	265	};
	266
	267	static void __init test_bitmap_parselist(void)
	268	{
	269	int i;
	270	int err;
0c2111a5	271	ktime_t time;
6df0d464 YN	272	DECLARE_BITMAP(bmap, 2048);
	273
	274	for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) {
	275	#define ptest parselist_tests[i]
	276
0c2111a5	277	time = ktime_get();
6df0d464	278	err = bitmap_parselist(ptest.in, bmap, ptest.nbits);
0c2111a5	279	time = ktime_get() - time;
6df0d464 YN	280
	281	if (err != ptest.errno) {
	282	pr_err("test %d: input is %s, errno is %d, expected %d\n",
	283	i, ptest.in, err, ptest.errno);
	284	continue;
	285	}
	286
	287	if (!err && ptest.expected
	288	&& !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) {
	289	pr_err("test %d: input is %s, result is 0x%lx, expected 0x%lx\n",
	290	i, ptest.in, bmap[0], *ptest.expected);
	291	continue;
	292	}
	293
	294	if (ptest.flags & PARSE_TIME)
	295	pr_err("test %d: input is '%s' OK, Time: %llu\n",
0c2111a5	296	i, ptest.in, time);
6df0d464 YN	297	}
	298	}
	299
f6f66c1b KC	300	#define EXP_BYTES (sizeof(exp) * 8)
f6f66c1b KC	301
3aa56885	302	static void __init test_bitmap_arr32(void)
5fd003f5	303	{
f6f66c1b	304	unsigned int nbits, next_bit;
3aa56885	305	u32 arr[sizeof(exp) / 4];
f6f66c1b	306	DECLARE_BITMAP(bmap2, EXP_BYTES);
3aa56885 YN	307
	308	memset(arr, 0xa5, sizeof(arr));
	309
f6f66c1b	310	for (nbits = 0; nbits < EXP_BYTES; ++nbits) {
3aa56885 YN	311	bitmap_to_arr32(arr, exp, nbits);
	312	bitmap_from_arr32(bmap2, arr, nbits);
	313	expect_eq_bitmap(bmap2, exp, nbits);
	314
	315	next_bit = find_next_bit(bmap2,
	316	round_up(nbits, BITS_PER_LONG), nbits);
	317	if (next_bit < round_up(nbits, BITS_PER_LONG))
	318	pr_err("bitmap_copy_arr32(nbits == %d:"
	319	" tail is not safely cleared: %d\n",
	320	nbits, next_bit);
	321
f6f66c1b	322	if (nbits < EXP_BYTES - 32)
3aa56885 YN	323	expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)],
3aa56885 YN	324	0xa5a5a5a5);
5fd003f5 DD	325	}
	326	}
	327
3cc78125 MW	328	static void noinline __init test_mem_optimisations(void)
	329	{
	330	DECLARE_BITMAP(bmap1, 1024);
	331	DECLARE_BITMAP(bmap2, 1024);
	332	unsigned int start, nbits;
	333
	334	for (start = 0; start < 1024; start += 8) {
3cc78125	335	for (nbits = 0; nbits < 1024 - start; nbits += 8) {
1e3054b9 MW	336	memset(bmap1, 0x5a, sizeof(bmap1));
	337	memset(bmap2, 0x5a, sizeof(bmap2));
	338
3cc78125 MW	339	bitmap_set(bmap1, start, nbits);
3cc78125 MW	340	__bitmap_set(bmap2, start, nbits);
1e3054b9	341	if (!bitmap_equal(bmap1, bmap2, 1024)) {
3cc78125	342	printk("set not equal %d %d\n", start, nbits);
1e3054b9 MW	343	failed_tests++;
	344	}
	345	if (!__bitmap_equal(bmap1, bmap2, 1024)) {
3cc78125	346	printk("set not __equal %d %d\n", start, nbits);
1e3054b9 MW	347	failed_tests++;
1e3054b9 MW	348	}
3cc78125 MW	349
	350	bitmap_clear(bmap1, start, nbits);
	351	__bitmap_clear(bmap2, start, nbits);
1e3054b9	352	if (!bitmap_equal(bmap1, bmap2, 1024)) {
3cc78125	353	printk("clear not equal %d %d\n", start, nbits);
1e3054b9 MW	354	failed_tests++;
	355	}
	356	if (!__bitmap_equal(bmap1, bmap2, 1024)) {
3cc78125 MW	357	printk("clear not __equal %d %d\n", start,
3cc78125 MW	358	nbits);
1e3054b9 MW	359	failed_tests++;
1e3054b9 MW	360	}
3cc78125 MW	361	}
	362	}
	363	}
	364
6b1a4d5b	365	static void __init selftest(void)
5fd003f5	366	{
ee3527bd	367	test_zero_clear();
978f369c	368	test_fill_set();
fe81814c	369	test_copy();
3aa56885	370	test_bitmap_arr32();
6df0d464	371	test_bitmap_parselist();
3cc78125	372	test_mem_optimisations();
5fd003f5 DD	373	}
5fd003f5 DD	374
6b1a4d5b	375	KSTM_MODULE_LOADERS(test_bitmap);
5fd003f5 DD	376	MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>");
5fd003f5 DD	377	MODULE_LICENSE("GPL");