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mm/damon/dbgfs-test: add a unit test case for 'init_regions'
This adds another test case for the new feature, 'init_regions'. Link: https://lkml.kernel.org/r/20211012205711.29216-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Cc: Amit Shah <amit@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Hildenbrand <david@redhat.com> Cc: David Rienjes <rientjes@google.com> Cc: David Woodhouse <dwmw@amazon.com> Cc: Greg Thelen <gthelen@google.com> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Leonard Foerster <foersleo@amazon.de> Cc: Marco Elver <elver@google.com> Cc: Markus Boehme <markubo@amazon.de> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 54 additions and 0 deletions
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@ -109,9 +109,63 @@ static void damon_dbgfs_test_set_targets(struct kunit *test)
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dbgfs_destroy_ctx(ctx);
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dbgfs_destroy_ctx(ctx);
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}
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}
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static void damon_dbgfs_test_set_init_regions(struct kunit *test)
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{
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struct damon_ctx *ctx = damon_new_ctx();
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unsigned long ids[] = {1, 2, 3};
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/* Each line represents one region in ``<target id> <start> <end>`` */
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char * const valid_inputs[] = {"2 10 20\n 2 20 30\n2 35 45",
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"2 10 20\n",
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"2 10 20\n1 39 59\n1 70 134\n 2 20 25\n",
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""};
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/* Reading the file again will show sorted, clean output */
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char * const valid_expects[] = {"2 10 20\n2 20 30\n2 35 45\n",
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"2 10 20\n",
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"1 39 59\n1 70 134\n2 10 20\n2 20 25\n",
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""};
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char * const invalid_inputs[] = {"4 10 20\n", /* target not exists */
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"2 10 20\n 2 14 26\n", /* regions overlap */
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"1 10 20\n2 30 40\n 1 5 8"}; /* not sorted by address */
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char *input, *expect;
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int i, rc;
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char buf[256];
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damon_set_targets(ctx, ids, 3);
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/* Put valid inputs and check the results */
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for (i = 0; i < ARRAY_SIZE(valid_inputs); i++) {
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input = valid_inputs[i];
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expect = valid_expects[i];
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rc = set_init_regions(ctx, input, strnlen(input, 256));
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KUNIT_EXPECT_EQ(test, rc, 0);
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memset(buf, 0, 256);
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sprint_init_regions(ctx, buf, 256);
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KUNIT_EXPECT_STREQ(test, (char *)buf, expect);
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}
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/* Put invlid inputs and check the return error code */
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for (i = 0; i < ARRAY_SIZE(invalid_inputs); i++) {
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input = invalid_inputs[i];
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pr_info("input: %s\n", input);
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rc = set_init_regions(ctx, input, strnlen(input, 256));
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KUNIT_EXPECT_EQ(test, rc, -EINVAL);
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memset(buf, 0, 256);
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sprint_init_regions(ctx, buf, 256);
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KUNIT_EXPECT_STREQ(test, (char *)buf, "");
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}
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damon_set_targets(ctx, NULL, 0);
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damon_destroy_ctx(ctx);
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}
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static struct kunit_case damon_test_cases[] = {
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static struct kunit_case damon_test_cases[] = {
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KUNIT_CASE(damon_dbgfs_test_str_to_target_ids),
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KUNIT_CASE(damon_dbgfs_test_str_to_target_ids),
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KUNIT_CASE(damon_dbgfs_test_set_targets),
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KUNIT_CASE(damon_dbgfs_test_set_targets),
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KUNIT_CASE(damon_dbgfs_test_set_init_regions),
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{},
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{},
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};
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};
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