[PATCH v3 2/9] lib/test_cpumask: Make test_cpumask_last check for nr_cpu_ids bits
From: Valentin Schneider
Date: Thu Aug 25 2022 - 14:13:06 EST
test_cpumask_last() currently fails on a system with
CONFIG_NR_CPUS=64
CONFIG_CPUMASK_OFFSTACK=n
nr_cpu_ids < NR_CPUS
[ 14.088853] # test_cpumask_last: EXPECTATION FAILED at lib/test_cpumask.c:77
[ 14.088853] Expected ((unsigned int)64) - 1 == cpumask_last(((const struct cpumask *)&__cpu_possible_mask)), but
[ 14.088853] ((unsigned int)64) - 1 == 63
[ 14.088853] cpumask_last(((const struct cpumask *)&__cpu_possible_mask)) == 3
[ 14.090435] not ok 3 - test_cpumask_last
Per smp.c::setup_nr_cpu_ids(), nr_cpu_ids <= NR_CPUS, so we want
the test to use nr_cpu_ids rather than nr_cpumask_bits.
Signed-off-by: Valentin Schneider <vschneid@xxxxxxxxxx>
---
lib/test_cpumask.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/test_cpumask.c b/lib/test_cpumask.c
index a31a1622f1f6..81b17563fcb3 100644
--- a/lib/test_cpumask.c
+++ b/lib/test_cpumask.c
@@ -73,8 +73,8 @@ static void test_cpumask_first(struct kunit *test)
static void test_cpumask_last(struct kunit *test)
{
- KUNIT_EXPECT_LE(test, nr_cpumask_bits, cpumask_last(&mask_empty));
- KUNIT_EXPECT_EQ(test, nr_cpumask_bits - 1, cpumask_last(cpu_possible_mask));
+ KUNIT_EXPECT_LE(test, nr_cpu_ids, cpumask_last(&mask_empty));
+ KUNIT_EXPECT_EQ(test, nr_cpu_ids - 1, cpumask_last(cpu_possible_mask));
}
static void test_cpumask_next(struct kunit *test)
--
2.31.1