[PATCH v2 4/5] lib/cpumask_kunit: log mask contents

From: Sander Vanheule
Date: Sat Aug 20 2022 - 11:03:46 EST


For extra context, log the contents of the masks under test. This
should help with finding out why a certain test fails.

Link: https://lore.kernel.org/lkml/CABVgOSkPXBc-PWk1zBZRQ_Tt+Sz1ruFHBj3ixojymZF=Vi4tpQ@xxxxxxxxxxxxxx/
Suggested-by: David Gow <davidgow@xxxxxxxxxx>
Signed-off-by: Sander Vanheule <sander@xxxxxxxxxxxxx>
Reviewed-by: David Gow <davidgow@xxxxxxxxxx>
---
lib/cpumask_kunit.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/lib/cpumask_kunit.c b/lib/cpumask_kunit.c
index 4d353614d853..0f8059a5e93b 100644
--- a/lib/cpumask_kunit.c
+++ b/lib/cpumask_kunit.c
@@ -51,6 +51,10 @@
static cpumask_t mask_empty;
static cpumask_t mask_all;

+#define STR_MASK(m) #m
+#define TEST_CPUMASK_PRINT(test, mask) \
+ kunit_info(test, "%s = '%*pbl'\n", STR_MASK(mask), nr_cpumask_bits, cpumask_bits(mask))
+
static void test_cpumask_weight(struct kunit *test)
{
KUNIT_EXPECT_TRUE(test, cpumask_empty(&mask_empty));
@@ -103,6 +107,9 @@ static void test_cpumask_iterators_builtin(struct kunit *test)
/* Ensure the dynamic masks are stable while running the tests */
cpu_hotplug_disable();

+ TEST_CPUMASK_PRINT(test, cpu_online_mask);
+ TEST_CPUMASK_PRINT(test, cpu_present_mask);
+
EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, online);
EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, present);

@@ -114,6 +121,9 @@ static int test_cpumask_init(struct kunit *test)
cpumask_clear(&mask_empty);
cpumask_setall(&mask_all);

+ TEST_CPUMASK_PRINT(test, &mask_all);
+ TEST_CPUMASK_PRINT(test, cpu_possible_mask);
+
return 0;
}

--
2.37.2