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: Yury Norov <yury.norov@gmail.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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@ -446,6 +446,42 @@ static void __init test_bitmap_parselist(void)
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}
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}
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static void __init test_bitmap_printlist(void)
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{
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unsigned long *bmap = kmalloc(PAGE_SIZE, GFP_KERNEL);
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char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
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char expected[256];
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int ret, slen;
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ktime_t time;
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if (!buf || !bmap)
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goto out;
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memset(bmap, -1, PAGE_SIZE);
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slen = snprintf(expected, 256, "0-%ld", PAGE_SIZE * 8 - 1);
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if (slen < 0)
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goto out;
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time = ktime_get();
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ret = bitmap_print_to_pagebuf(true, buf, bmap, PAGE_SIZE * 8);
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time = ktime_get() - time;
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if (ret != slen + 1) {
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pr_err("bitmap_print_to_pagebuf: result is %d, expected %d\n", ret, slen);
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goto out;
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}
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if (strncmp(buf, expected, slen)) {
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pr_err("bitmap_print_to_pagebuf: result is %s, expected %s\n", buf, expected);
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goto out;
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}
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pr_err("bitmap_print_to_pagebuf: input is '%s', Time: %llu\n", buf, time);
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out:
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kfree(buf);
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kfree(bmap);
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}
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static const unsigned long parse_test[] __initconst = {
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BITMAP_FROM_U64(0),
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BITMAP_FROM_U64(1),
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@ -818,6 +854,7 @@ static void __init selftest(void)
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test_bitmap_arr32();
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test_bitmap_parse();
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test_bitmap_parselist();
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test_bitmap_printlist();
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test_mem_optimisations();
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test_for_each_set_clump8();
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test_bitmap_cut();
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