Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
bitmap: Add test for out-of-boundary modifications for scatter & gather
Make sure that bitmap_scatter() and bitmap_gather() do not modify
the bits outside of the given nbits span.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Yury Norov <ynorov@nvidia.com>
authored by
Andy Shevchenko
and committed by
Yury Norov
6b5a4b68
c3692998
+7
-3
+7
-3
lib/test_bitmap.c
+7
-3
lib/test_bitmap.c
···
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static const unsigned long sg_mask[] __initconst = {
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BITMAP_FROM_U64(0x000000000000035aULL),
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+
BITMAP_FROM_U64(0x0000000000000000ULL),
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};
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static const unsigned long sg_src[] __initconst = {
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BITMAP_FROM_U64(0x0000000000000667ULL),
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+
BITMAP_FROM_U64(0x0000000000000000ULL),
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};
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static const unsigned long sg_gather_exp[] __initconst = {
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BITMAP_FROM_U64(0x0000000000000029ULL),
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+
BITMAP_FROM_U64(0x0000000000000000ULL),
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};
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static const unsigned long sg_scatter_exp[] __initconst = {
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BITMAP_FROM_U64(0x000000000000021aULL),
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+
BITMAP_FROM_U64(0x0000000000000000ULL),
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};
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static void __init test_bitmap_sg(void)
···
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/* Simple gather call */
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bitmap_zero(bmap_gather, 100);
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bitmap_gather(bmap_gather, sg_src, sg_mask, nbits);
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expect_eq_bitmap(sg_gather_exp, bmap_gather, nbits);
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expect_eq_bitmap(sg_gather_exp, bmap_gather, 100);
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/* Simple scatter call */
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bitmap_zero(bmap_scatter, 100);
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bitmap_scatter(bmap_scatter, sg_src, sg_mask, nbits);
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expect_eq_bitmap(sg_scatter_exp, bmap_scatter, nbits);
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expect_eq_bitmap(sg_scatter_exp, bmap_scatter, 100);
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/* Scatter/gather relationship */
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bitmap_zero(bmap_tmp, 100);
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bitmap_gather(bmap_tmp, bmap_scatter, sg_mask, nbits);
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bitmap_scatter(bmap_res, bmap_tmp, sg_mask, nbits);
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expect_eq_bitmap(bmap_scatter, bmap_res, nbits);
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expect_eq_bitmap(bmap_scatter, bmap_res, 100);
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}
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#define PARSE_TIME 0x1