Commit db731300 authored by Yury Norov's avatar Yury Norov
Browse files

lib: bitmap: add performance test for bitmap_print_to_pagebuf 



Functional tests for bitmap_print_to_pagebuf() are provided
in lib/test_printf.c. This patch adds performance test for
a case of fully set bitmap.

Signed-off-by: default avatarYury Norov <yury.norov@gmail.com>
Tested-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
parent ec288a2c

lib/test_bitmap.c

+37 −0
Original line number Diff line number Diff line
@@ -446,6 +446,42 @@ static void __init test_bitmap_parselist(void) 
	}

}



static void __init test_bitmap_printlist(void)

{

	unsigned long *bmap = kmalloc(PAGE_SIZE, GFP_KERNEL);

	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);

	char expected[256];

	int ret, slen;

	ktime_t time;



	if (!buf || !bmap)

		goto out;



	memset(bmap, -1, PAGE_SIZE);

	slen = snprintf(expected, 256, "0-%ld", PAGE_SIZE * 8 - 1);

	if (slen < 0)

		goto out;



	time = ktime_get();

	ret = bitmap_print_to_pagebuf(true, buf, bmap, PAGE_SIZE * 8);

	time = ktime_get() - time;



	if (ret != slen + 1) {

		pr_err("bitmap_print_to_pagebuf: result is %d, expected %d\n", ret, slen);

		goto out;

	}



	if (strncmp(buf, expected, slen)) {

		pr_err("bitmap_print_to_pagebuf: result is %s, expected %s\n", buf, expected);

		goto out;

	}



	pr_err("bitmap_print_to_pagebuf: input is '%s', Time: %llu\n", buf, time);

out:

	kfree(buf);

	kfree(bmap);

}



static const unsigned long parse_test[] __initconst = {

	BITMAP_FROM_U64(0),

	BITMAP_FROM_U64(1),
@@ -818,6 +854,7 @@ static void __init selftest(void) 
	test_bitmap_arr32();

	test_bitmap_parse();

	test_bitmap_parselist();

	test_bitmap_printlist();

	test_mem_optimisations();

	test_for_each_set_clump8();

	test_bitmap_cut();