tools/testing/scatterlist: Show errors in human readable form
Instead of just asserting dump some more useful info about what the test saw versus what it expected to see. Link: https://lore.kernel.org/r/20201004154340.1080481-4-leon@kernel.org Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Maor Gottlieb <maorg@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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@ -5,6 +5,15 @@
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#define MAX_PAGES (64)
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struct test {
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int alloc_ret;
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unsigned num_pages;
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unsigned *pfn;
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unsigned size;
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unsigned int max_seg;
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unsigned int expected_segments;
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};
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static void set_pages(struct page **pages, const unsigned *array, unsigned num)
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{
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unsigned int i;
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@ -17,17 +26,32 @@ static void set_pages(struct page **pages, const unsigned *array, unsigned num)
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#define pfn(...) (unsigned []){ __VA_ARGS__ }
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static void fail(struct test *test, struct sg_table *st, const char *cond)
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{
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unsigned int i;
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fprintf(stderr, "Failed on '%s'!\n\n", cond);
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printf("size = %u, max segment = %u, expected nents = %u\nst->nents = %u, st->orig_nents= %u\n",
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test->size, test->max_seg, test->expected_segments, st->nents,
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st->orig_nents);
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printf("%u input PFNs:", test->num_pages);
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for (i = 0; i < test->num_pages; i++)
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printf(" %x", test->pfn[i]);
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printf("\n");
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exit(1);
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}
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#define VALIDATE(cond, st, test) \
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if (!(cond)) \
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fail((test), (st), #cond);
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int main(void)
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{
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const unsigned int sgmax = SCATTERLIST_MAX_SEGMENT;
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struct test {
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int alloc_ret;
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unsigned num_pages;
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unsigned *pfn;
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unsigned size;
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unsigned int max_seg;
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unsigned int expected_segments;
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} *test, tests[] = {
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struct test *test, tests[] = {
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{ -EINVAL, 1, pfn(0), PAGE_SIZE, PAGE_SIZE + 1, 1 },
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{ -EINVAL, 1, pfn(0), PAGE_SIZE, 0, 1 },
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{ -EINVAL, 1, pfn(0), PAGE_SIZE, sgmax + 1, 1 },
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@ -67,8 +91,8 @@ int main(void)
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if (test->alloc_ret)
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continue;
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assert(st.nents == test->expected_segments);
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assert(st.orig_nents == test->expected_segments);
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VALIDATE(st.nents == test->expected_segments, &st, test);
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VALIDATE(st.orig_nents == test->expected_segments, &st, test);
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sg_free_table(&st);
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}
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