Messages in this thread | | | Date | Tue, 9 Aug 2022 19:27:25 -0300 | Subject | Re: [PATCH v1 2/5] lib/test_cpumask: fix cpu_possible_mask last test | From | Maíra Canal <> |
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On 8/9/22 15:08, Sander Vanheule wrote: > Since cpumask_first() on the cpu_possible_mask must return at most > nr_cpu_ids - 1 for a valid result, cpumask_last() cannot return anything > larger than this value. As test_cpumask_weight() also verifies that the > total weight of cpu_possible_mask must equal nr_cpu_ids, the last bit > set in this mask must be at nr_cpu_ids - 1. > > Fixes: c41e8866c28c ("lib/test: introduce cpumask KUnit test suite") > Link: https://lore.kernel.org/lkml/346cb279-8e75-24b0-7d12-9803f2b41c73@riseup.net/ > Reported-by: Maíra Canal <mairacanal@riseup.net> > Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Maíra Canal <mairacanal@riseup.net>
> Cc: David Gow <davidgow@google.com> > --- > lib/test_cpumask.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/test_cpumask.c b/lib/test_cpumask.c > index 4ebf9f5805f3..4d353614d853 100644 > --- a/lib/test_cpumask.c > +++ b/lib/test_cpumask.c > @@ -73,7 +73,7 @@ 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_EQ(test, nr_cpu_ids - 1, cpumask_last(cpu_possible_mask)); > } > > static void test_cpumask_next(struct kunit *test)
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