KUNIT_ASSER...ARNING_COUNT(9)

💅 KUNIT_ASSERT_SUPPRESSED_WARNING_COUNT 💅

okay so we're in the Kernel API Manual, and this macro is genuinely giving “bestie let me check the suppressed warnings for you” energy. no cap, it's a tiny but iconic assertion helper.

✨ NAME ✨

KUNIT_ASSERT_SUPPRESSED_WARNING_COUNT — sets an assertion that the suppressed warning count equals @expected.

🎀 SYNOPSIS 🎀

KUNIT_ASSERT_SUPPRESSED_WARNING_COUNT (test , expected );

🫶 ARGUMENTS 🫶

• test — the test context object, aka the little world this check lives in.
• expected — an expression that evaluates to the expected warning count.

💖 DESCRIPTION 💖

okay so this macro sets an assertion that the number of suppressed WARN*() calls equals expected. it's literally the same as KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT, except it causes an assertion failure (see KUNIT_ASSERT_TRUE) when the assertion is not met.

that's the whole vibe. lowkey simple, highkey useful. 💅

🌈 SEE ALSO 🌈

Kernel file ./include/kunit/test.h is the spot. then the whole linked crew:

• enum kunit_status(9), struct kunit_case(9), KUNIT_CASE(9), KUNIT_CASE_ATTR(9), KUNIT_CASE_SLOW(9), KUNIT_CASE_PARAM(9), KUNIT_CASE_PARAM_ATTR(9), KUNIT_CASE_PARAM_WITH_INIT(9)
• struct kunit_suite(9), struct kunit(9), kunit_test_suites(9), kunit_test_init_section_suites(9), kunit_kmalloc_array(9), kunit_kmalloc(9), kunit_kfree(9), kunit_kzalloc(9), kunit_kcalloc(9), kunit_kfree_const(9)
• kunit_kstrdup(9), kunit_kstrdup_const(9), kunit_attach_mm(9), kunit_vm_mmap(9), kunit_mark_skipped(9), kunit_skip(9), kunit_info(9), kunit_warn(9), kunit_err(9)
• KUNIT_SUCCEED(9), KUNIT_FAIL(9), KUNIT_EXPECT_TRUE(9), KUNIT_EXPECT_FALSE(9), KUNIT_EXPECT_EQ(9), KUNIT_EXPECT_PTR_EQ(9), KUNIT_EXPECT_NE(9), KUNIT_EXPECT_PTR_NE(9), KUNIT_EXPECT_LT(9), KUNIT_EXPECT_LE(9), KUNIT_EXPECT_GT(9), KUNIT_EXPECT_GE(9)
• KUNIT_EXPECT_STREQ(9), KUNIT_EXPECT_STRNEQ(9), KUNIT_EXPECT_MEMEQ(9), KUNIT_EXPECT_MEMNEQ(9), KUNIT_EXPECT_NULL(9), KUNIT_EXPECT_NOT_NULL(9), KUNIT_EXPECT_NOT_ERR_OR_NULL(9), KUNIT_FAIL_AND_ABORT(9)
• KUNIT_ASSERT_TRUE(9), KUNIT_ASSERT_FALSE(9), KUNIT_ASSERT_EQ(9), KUNIT_ASSERT_PTR_EQ(9), KUNIT_ASSERT_NE(9), KUNIT_ASSERT_PTR_NE(9), KUNIT_ASSERT_LT(9), KUNIT_ASSERT_LE(9), KUNIT_ASSERT_GT(9), KUNIT_ASSERT_GE(9)
• KUNIT_ASSERT_STREQ(9), KUNIT_ASSERT_STRNEQ(9), KUNIT_ASSERT_MEMEQ(9), KUNIT_ASSERT_MEMNEQ(9), KUNIT_ASSERT_NULL(9), KUNIT_ASSERT_NOT_NULL(9), KUNIT_ASSERT_NOT_ERR_OR_NULL(9)
• KUNIT_ARRAY_PARAM(9), KUNIT_ARRAY_PARAM_DESC(9), kunit_register_params_array(9), kunit_warning_suppress(9), KUNIT_SUPPRESSED_WARNING_COUNT(9), KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(9)

signed off with love from the ./include/kunit source, dated October 2026 💜✨